JP2017228022A - Tsunami inundation prediction system, control device, control method and program of parallel computing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reliable tsunami inundation prediction system which gives a user information on a tsunami inundation prediction to be generated in real time after an occurrence of an earthquake.SOLUTION: A tsunami inundation prediction system comprises a plurality of management centers, a plurality of data processing servers and a plurality of transfer servers. The management center has a parallel computing system which executes jobs in parallel through a plurality of computing nodes and a control device which controls the parallel computing system. The data processing server requests the management center for execution of a tsunami inundation prediction according to earthquake information generated in association with an occurrence of an earthquake. The transfer server transfers a tsunami inundation prediction result by the management center. The control device of the management center receiving a request for the execution of the tsunami inundation prediction causes the parallel computing system to execute a job related to the tsunami inundation prediction and transmits the tsunami inundation prediction result to the transfer server, among the plurality of transfer servers, which secures a connection with a predetermined destination.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tsunami inundation prediction system, a control device, a control method for a parallel computer system, and a program. In particular, the present invention relates to a tsunami inundation prediction system that performs tsunami inundation prediction, a control device, a control method for a parallel computer system, and a program.

  When an earthquake occurs, the Japan Meteorological Agency estimates the epicenter and magnitude based on data generated by seismometers located in various parts of the country, and distributes the estimation results as emergency earthquake bulletins. In addition, since there is a possibility that a tsunami will occur due to the occurrence of a huge earthquake, the Japan Meteorological Agency verifies the possibility of the occurrence of a tsunami due to the occurrence of an earthquake, and notifies each local government etc. of a “tsunami forecast” if necessary.

  According to Non-Patent Document 1, the Japan Meteorological Agency creates a tsunami forecast by referring to a database constructed in advance. More specifically, a plurality of earthquake occurrence scenarios are created for a large number of locations on the seabed, and a tsunami simulation generated by each earthquake occurrence scenario is executed in advance. In addition, the contents of the earthquake scenario (seismic location, scale, etc.) and the simulation results (the height of the tsunami on the coastline) are related, and a tsunami forecast database is constructed.

  The Japan Meteorological Agency prepared the tsunami forecast database in advance, and when an earthquake actually occurred, the actual location of the tsunami forecast database was obtained using the location and magnitude of the earthquake as a search key. Treat as the height of the tsunami caused by the earthquake. The Japan Meteorological Agency creates a tsunami forecast using the tsunami height of the coastline to be forecasted, and notifies relevant agencies such as local governments.

  In addition to the Japan Meteorological Agency, which produces tsunami forecasts, various research institutions conduct simulations (numerical simulations) of tsunamis caused by earthquakes. For example, a tsunami simulation may be performed for the purpose of disaster prevention for examining how to deal with a giant tsunami or for the purpose of predicting damage when a giant tsunami occurs.

  Patent Document 1 discloses a technique for executing a simulation related to tsunami inundation prediction by changing a mesh size (unit for performing simulation) when executing a simulation related to tsunami inundation prediction by a computer.

  Here, Non-Patent Document 2 discloses a calculation formula and an algorithm as a basis for executing the simulation related to the tsunami inundation prediction. Non-Patent Document 2 discloses a method of tsunami inundation prediction using nonlinear long wave theory and Staggered leap-frog method. Specifically, Non-Patent Document 2 discloses a method for calculating in two dimensions the propagation process of a tsunami from a fault change caused by an earthquake to a tsunami generation to the tsunami run-up area. . In this tsunami inundation prediction method, information such as wave height and velocity is set at each point on the map (two-dimensional data), and the wave height and inundated water area etc. on the coast when a tsunami occurs are calculated by numerical calculation with a computer. .

  In addition, in order to execute a simulation related to tsunami inundation prediction, so-called information called a fault parameter is required. Specifically, the fault parameter defines the size and movement of the fault based on the fault length, fault width, average slip amount, strike, inclination angle, slip angle, and the like. Currently, various research institutions calculate fault parameters and provide the fault parameters.

Japanese Patent No. 3554926

Japan Meteorological Agency, “Mechanism to predict tsunami”, (searched on January 27, 2015) <http://www.data.jma.go.jp/svd/eqev/data/tsunami/ryoteki.html> C. Goto, Y. Ogawa, N. Shuto and F. Imamura, "Numerical method of tsunami simulation with the leap-frog scheme", IUGG / IOC Time Project, (searched January 27, 2015) <http: // unesdoc.unesco.org/images/0012/001223/122367eb.pdf>

  Each disclosure of the above prior art document is incorporated herein by reference. The following analysis was made by the present inventors.

  As described above, the Japan Meteorological Agency selects earthquake scenarios that are close to the location of the actual earthquake and the magnitude, etc., and searches the tsunami forecast database for the height of the tsunami on the coastline. In other words, the tsunami forecast created by the Japan Meteorological Agency has been limited to providing information on the wave height on the coastline, and has not been conducted to predict inundation on land. However, the disaster prevention officers of each local government have demands to determine how far away from the coastline the residents should be alerted and to which areas the tsunami will be damaged. ing. In other words, there is a demand for providing information including the prediction of land-based tsunami inundation using information on earthquakes that actually occurred (seismic source position, magnitude, etc.).

  From the standpoint of disaster prevention officers, the timing for obtaining the results of tsunami inundation prediction is also important. In other words, disaster prevention personnel, etc., acquire accurate tsunami inundation predictions within a short time from the occurrence of the earthquake to the arrival of the tsunami, and take appropriate actions according to the acquired information (for example, alerting residents) I hope you can take it off.

The inventors examined the process from the occurrence of an earthquake to obtaining a tsunami inundation prediction. As a result, we learned that tsunami inundation prediction can be obtained by the following process.
(1) Earthquake detection (2) Identification of epicenter (3) Judgment of tsunami occurrence (4) Calculation of fault parameters (estimation of fault motion)
(5) Estimation of tsunami initial water level (6) Execution of simulation related to tsunami inundation prediction

  In addition, the inventors focused on the fact that the above processes are only executed individually by the Japan Meteorological Agency or various research institutions, and the above processes are not executed in cooperation with each other. As a result, the inventors have reached the conclusion that at present, in order to obtain a tsunami inundation prediction result from the occurrence of an earthquake, it is necessary to carry out the above-described process through human intervention. However, the above processes (1) to (6) are not always executed without delay under an emergency situation of earthquake occurrence. Therefore, the inventors have found that it is difficult to calculate a real-time tsunami inundation prediction result at a timing required by a person in charge of disaster prevention.

  In addition, among the procedures (1) to (6), the simulation related to the tsunami inundation prediction of (6) requires a huge amount of calculation, so it may take a long time to obtain the simulation result. I know. For example, even if the inventors use a relatively high performance computer (so-called workstation or the like) installed in a laboratory or the like, in the simulation related to the tsunami inundation prediction of (6) above, We think that it is necessary for several tens of hours or more (for example, when the tsunami phenomenon is reproduced for 6 hours).

  As described above, the user's desire to obtain a tsunami inundation prediction corresponding to the occurrence of the earthquake within a short time (for example, within several tens of minutes) from the occurrence of the earthquake is not satisfied. Furthermore, with the occurrence of a huge earthquake, there is a possibility that the computer for predicting the tsunami inundation will be damaged. If a failure occurs in a computer that performs tsunami inundation prediction, as a problem before the timing of providing tsunami information, it becomes difficult to provide information required by the local disaster prevention staff.

  In view of the above situation, the present invention provides a user with information related to tsunami inundation prediction generated in real time from the occurrence of an earthquake to a reliable tsunami inundation prediction system, control device, control method for parallel computer system, and program The purpose is to provide.

  According to a first aspect of the present invention, a plurality of management centers each having a parallel computer system that executes jobs in parallel by a plurality of calculation nodes, and a control device that controls the parallel computer system; A plurality of data processing servers that request at least one management center of the plurality of management centers to execute tsunami inundation prediction according to the earthquake information generated with the occurrence of the earthquake, and a tsunami inundation by the management center A plurality of transfer servers that transfer a prediction result to a predetermined transmission destination, and the control device included in a management center requested to execute the tsunami inundation prediction is configured to send the tsunami to the parallel computer system While executing a job related to inundation prediction, the result of the tsunami inundation prediction is connected to the predetermined transmission destination among the plurality of transfer servers. The transfer server that is holding, tsunami inundation prediction system to be transmitted, is provided.

  According to a second aspect of the present invention, there is provided a control device for controlling a parallel computer system that executes a job in parallel by a plurality of computation nodes, wherein tsunami inundation prediction is performed according to earthquake information generated when an earthquake occurs. The parallel computer system executes a job related to the tsunami inundation prediction based on the execution request for the tsunami inundation prediction, and the result of the tsunami inundation prediction is determined from a plurality of transfer servers as a predetermined transfer server. A control device is provided that transmits to a transfer server that is secured to a destination.

  According to a third aspect of the present invention, there is provided a parallel computer system control method for executing a job in parallel by a plurality of calculation nodes, and executing tsunami inundation prediction according to earthquake information generated when an earthquake occurs. A step of accepting a request, a step of causing the parallel computer system to execute a job relating to the tsunami inundation prediction based on the execution request of the tsunami inundation prediction, and a result of the tsunami inundation prediction, among a plurality of transfer servers, A method for controlling a parallel computer system is provided that includes a step of transmitting to a transfer server that is secured to a connection with a predetermined transmission destination.

According to a fourth aspect of the present invention, there is provided a program to be executed by a computer mounted on a control device controlled by a parallel computer system that executes jobs in parallel by a plurality of calculation nodes, and is generated when an earthquake occurs. A process of accepting an execution request for tsunami inundation prediction according to earthquake information, a process of causing the parallel computer system to execute a job related to the tsunami inundation prediction based on the execution request of the tsunami inundation prediction, and the tsunami inundation prediction A program that executes the process of transmitting the result to a transfer server that is secured to a predetermined destination among the plurality of transfer servers is provided.
This program can be recorded on a computer-readable storage medium. The storage medium may be non-transient such as a semiconductor memory, a hard disk, a magnetic recording medium, an optical recording medium, or the like. The present invention can also be embodied as a computer program product.

  According to each aspect of the present invention, there is provided a highly reliable tsunami inundation prediction system, control device, parallel computer system control method, and program for providing users with information related to tsunami inundation prediction generated in real time from the occurrence of an earthquake. Provided.

It is a figure for demonstrating the outline | summary of one Embodiment. It is a figure which shows an example of the whole structure of the tsunami inundation prediction system which concerns on 1st Embodiment. It is a figure which shows an example of an earthquake early warning. It is a figure for demonstrating a fault parameter. It is a figure for demonstrating the parameter which the program concerning a tsunami inundation prediction requires. It is a figure which shows an example of the data output result of the program which concerns on tsunami inundation prediction. It is a figure which shows an example of an internal structure of the data processing server which concerns on 1st Embodiment. It is a figure which shows an example of a flooding prediction request | requirement. It is a figure which shows an example of the table information which the inundation prediction request | requirement part which concerns on 1st Embodiment refers. It is a figure which shows an example of a request destination management table. It is a figure which shows an example of the resource determination table which the resource determination part which concerns on 1st Embodiment refers. It is a figure for demonstrating operation | movement of the request destination determination part which concerns on 1st Embodiment. It is a figure for demonstrating operation | movement of the request destination determination part which concerns on 1st Embodiment. It is a flowchart which shows an example of operation | movement of the request destination determination part which concerns on 1st Embodiment. It is a flowchart which shows an example of operation | movement of the inundation prediction request | requirement part which concerns on 1st Embodiment. It is a flowchart which shows an example of operation | movement of the verification request process part which concerns on 1st Embodiment. It is a figure which shows an example of the internal structure of the control apparatus which concerns on 1st Embodiment. It is a figure which shows an example of the script file which the simulation instruction | indication part which concerns on 1st Embodiment produces | generates. It is a figure which shows an example of a result transmission destination management table. It is a flowchart which shows an example of operation | movement of the control apparatus which concerns on 1st Embodiment. It is a figure which shows an example of schematic structure of the parallel computer system which concerns on 1st Embodiment. It is a figure which shows an example of an internal structure of the job management node which concerns on 1st Embodiment. It is a figure for demonstrating selection of the job queue in the job management node which concerns on 1st Embodiment. It is a figure for demonstrating the difference between a job queue and an emergency job queue. It is a flowchart which shows an example of operation | movement of the parallel computer system which concerns on 1st Embodiment. It is a figure which shows an example of the internal structure of the transfer server which concerns on 1st Embodiment. It is a sequence diagram which shows an example of operation | movement of the tsunami inundation prediction system which concerns on 1st Embodiment.

  First, an outline of one embodiment will be described. Note that the reference numerals of the drawings attached to the outline are attached to the respective elements for convenience as an example for facilitating understanding, and the description of the outline is not intended to be any limitation.

  The tsunami inundation prediction system according to an embodiment includes a plurality of management centers 100, a plurality of data processing servers 101, and a plurality of transfer servers 102 (see FIG. 1). Each of the management centers 100 includes a parallel computer system that executes jobs in parallel by a plurality of calculation nodes, and a control device that controls the parallel computer system. Each of the data processing servers 101 requests at least one management center 100 among the plurality of management centers 100 to execute the tsunami inundation prediction according to the earthquake information generated with the occurrence of the earthquake. The transfer server 102 transfers the result of the tsunami inundation prediction by the management center 100 to a predetermined transmission destination. The control device included in the management center 100 requested to execute the tsunami inundation prediction causes the parallel computer system to execute a job related to the tsunami inundation prediction. The said control apparatus transmits the result of a tsunami inundation prediction to the transfer server with which the connection with a predetermined transmission destination is ensured among the some transfer servers 102. FIG.

  In the tsunami inundation prediction system shown in FIG. 1, a data processing server 101 that requests the management center 100 to execute a simulation, and a transfer that transfers a tsunami inundation prediction result to a predetermined transmission destination (for example, the municipality terminal 10 shown in FIG. 2). The server 102 has a redundant configuration. Therefore, even if a failure occurs in a part of the data processing server 101 or the transfer server 102 due to the influence of the earthquake that has occurred, the influence on the entire system can be mitigated. That is, it is possible to improve the reliability of a tsunami inundation prediction system that generates disaster information related to tsunami inundation prediction in real time from the occurrence of an earthquake.

  Hereinafter, specific embodiments will be described in more detail with reference to the drawings. In addition, in each embodiment, the same code | symbol is attached | subjected to the same component and the description is abbreviate | omitted.

[First Embodiment]
The first embodiment will be described in more detail with reference to the drawings.

[System configuration]
FIG. 2 is a diagram illustrating an example of the overall configuration of the tsunami inundation prediction system according to the first embodiment. Referring to FIG. 2, the tsunami inundation prediction system includes a plurality of management centers 2-1 to 2-n (n is a positive integer, the same shall apply hereinafter), a plurality of local government terminals 10-1 to 10-5, 20, laboratory computer 30, a plurality of data processing servers 40-1 to 40-m (m is a positive integer, hereinafter the same), and a plurality of transfer servers 80-1 to 80-k (k is a positive integer). , The same shall apply hereinafter). Each of the management centers 2-1 to 2-n is a so-called supercomputer management site, and includes a control device 50, a parallel computer system 60, and a database (DB) server 70. In the following description, when there is no particular reason for distinguishing the management centers 2-1 to 2-n, they are simply referred to as “management center 2”. Similarly, the local government terminals 10-1 to 10-5 are “local government terminal 10”, the data processing servers 40-1 to 40-m are “data processing server 40”, and the transfer servers 80-1 to 80-k are “transfer servers”. 80 ”as appropriate.

  The local government terminal 10, the Japan Meteorological Agency computer 20, the laboratory computer 30, the data processing server 40, the transfer server 80, and the management center 2 are connected to each other via a network. An intranet is laid in each management center 2, and the control device 50, the parallel computer system 60, and the database server 70 are configured to be able to communicate with each other. The control device 50 included in each management center 2 functions as an external interface of the parallel computer system 60, and a user who intends to use the parallel computer system 60 accesses the control device 50 and exchanges necessary information.

[System operation overview]
Next, an outline of the operation of the tsunami inundation prediction system according to the first embodiment will be described with reference to FIG.

  When an earthquake occurs, the Japan Meteorological Agency computer 20 generates an earthquake early warning and delivers the generated earthquake early warning. The laboratory computer 30 analyzes the movement of the fault (crustal deformation) due to the occurrence of the earthquake, and transmits the analysis result to each data processing server 40 as a “fault parameter”.

  Each of the data processing servers 40 receives the earthquake early warning, and based on the information included in the emergency earthquake early warning, a simulation related to the tsunami inundation prediction according to the earthquake that occurred in the management center 2 (tsunami inundation prediction simulation) It is determined whether or not execution is requested. In the following description, the execution request for the tsunami inundation prediction simulation transmitted from the data processing server 40 to the management center 2 (more correctly, the control device 50) is referred to as an “inundation prediction request”. When making a flood prediction request, the data processing server 40 makes a request to the management center 2 with the fault parameters received from the laboratory computer 30.

  The control device 50 included in each management center 2 receives the inundation prediction request from the data processing server 40 and processes the inundation prediction request. Specifically, the control device 50 verifies the validity of the inundation prediction request from the data processing server 40. When it is determined that the request is valid, the control device 50 instructs the parallel computer system 60 to execute a simulation related to the tsunami inundation prediction (instructs the job input related to the tsunami inundation prediction). At that time, the control device 50 describes the requirements for performing the simulation in the parallel computer system 60 in a script file (job script file), and provides the script file to the parallel computer system 60.

  The parallel computer system 60 executes a simulation related to the requested tsunami inundation prediction using the script file and the terrain data stored in the database server 70. The parallel computer system 60 stores the simulation result in the database server 70 and notifies the control device 50 of the end of simulation.

  The control device 50 transmits the simulation result (real-time tsunami inundation prediction) stored in the database server 70 toward the transfer server 80. The transfer server 80 that has received the simulation result transfers the simulation result to the local government terminal 10 that needs the information.

  The management center 2, the data processing server 40, and the transfer server 80 are distributed in various places throughout Japan.

[Outline of various devices]
Next, various computers that make up the tsunami inundation prediction system will be described.

  The local government terminal 10 is a terminal installed in each local government. The person in charge of disaster prevention in each local government acquires the real-time tsunami inundation prediction transmitted by the data processing server 40 using the local government terminal 10. In addition, it is desirable that the person in charge of disaster prevention uses the terminal to take actions according to the real-time tsunami inundation prediction (contact with related organizations, evacuation of residents, etc.).

  The Japan Meteorological Agency computer 20 is a terminal installed in the Japan Meteorological Agency. The Japan Meteorological Agency computer 20 detects the occurrence of an earthquake from the observation data of seismometers arranged in various places, estimates the epicenter and magnitude of the earthquake, and distributes it to various organizations as an emergency earthquake bulletin. One of the engines that receives the earthquake early warning is an engine having the data processing server 40. For example, the data processing server 40 receives the earthquake early warning having the contents as shown in FIG.

  The laboratory computer 30 is a terminal installed in a research institution or the like whose main business is research on earthquakes and tsunamis. The laboratory computer 30 calculates fault parameters corresponding to the earthquake that has occurred, based on data provided by the Japan Meteorological Agency (for example, data generated by a seismometer or emergency earthquake warning), data collected independently, and the like. The fault parameters calculated by the laboratory computer 30 include one apex of the fault (coordinate X in the north-south direction, coordinate Y in the east-west direction, coordinate Z in the depth direction), and the length of the upper side of the fault (fault length). L), the length of the side (fault width W), the strike Φ that is the azimuth angle of the upper side, the inclination angle θ that is an angle with respect to the horizontal plane, the slip angle λ of the fault, and the average slip amount D of the fault Included (see FIG. 4).

  The data processing server 40 shown in FIG. 2 is a server (computer) that processes data distributed by the Japan Meteorological Agency, etc., and an organization (for example, a university research institution) entrusted with provision of real-time tsunami inundation prediction from each local government Placed in. The data processing server 40 requests the management center 2 to execute a tsunami inundation prediction simulation based on the earthquake early warnings distributed by the Japan Meteorological Agency, fault parameters transmitted by the research institute and the like. Although details will be described later, the data processing server 40 is a destination of execution of the above-described tsunami inundation prediction simulation based on the degree of influence of the earthquake that has occurred on each management center 2 (hereinafter referred to as the degree of earthquake influence). The management center 2 is determined (the transmission destination of the inundation prediction request is determined). In addition, each data processing server 40-1 to 40-m has the same operation when determining a simulation execution request destination. In other words, the same inundation prediction request is transmitted to the same management center 2 a plurality of times.

  The control device 50 is a device that controls and manages the parallel computer system 60. The control device 50 has a function as an authentication device that authenticates a user who intends to use the parallel computer system 60 and a function as a firewall that blocks unauthorized access from the outside.

  Access to the parallel computer system 60 is performed via the control device 50, and the parallel computer system 60 cannot be directly accessed from outside the management center 2. The parallel computer system 60 is a computer called a so-called supercomputer, and has a processing capability far exceeding the data processing capability of the data processing server 40, for example. The parallel computer system 60 includes a plurality of computers (calculation nodes to be described later), and a high data processing capability is obtained by executing a program in parallel on the plurality of computers.

  The database server 70 stores data (for example, terrain data) necessary for program execution in the parallel computer system 60. Alternatively, the database server 70 is used as a storage device when data is exchanged between the control device 50 and the parallel computer system 60.

  Each of the transfer servers 80 is basically connected to all local government terminals 10 during normal times. The transfer server 80 also has a function of monitoring the connection with the local government terminal 10 via the network and notifying the management center 2 (more precisely, the control device 50) of the connection information of the local government terminal 10. Each transfer server 80 is common in that it has the above functions.

[Tsunami inundation prediction program]
Next, a program (algorithm) related to tsunami inundation prediction executed by the parallel computer system 60 will be outlined. The tsunami inundation prediction simulation is executed by the above program.

The parallel computer system 60 can use, for example, a program in which the algorithm disclosed in Non-Patent Document 2 is implemented as a program related to tsunami inundation prediction. The program related to tsunami inundation prediction
(1) calculating ground and seafloor crustal deformation based on fault parameters;
(2) calculating an initial water level (sea level change) based on crustal deformation;
(3) calculating a water level change with time based on wave propagation;
Are executed sequentially.

  A program related to tsunami inundation prediction requires various information such as a simulation target range and its mesh size, an inundation prediction range and its mesh size, a phenomenon reproduction time, and fault parameters as input parameters.

  The simulation target area is an area where wave propagation and inundation associated with the occurrence of an earthquake are calculated. The inundation prediction range is an area for predicting inundation (seawater height) caused by a tsunami accompanying the occurrence of an earthquake. A simulation target range is determined for each inundation prediction range. When an earthquake occurs within a specific simulation target range, a tsunami inundation prediction simulation is executed in the inundation prediction range corresponding to the simulation target range. For example, referring to FIG. 5A, a simulation target range 211 corresponding to the inundation prediction range 201 and a simulation target range 212 corresponding to the inundation prediction range 202 are set. However, it is not necessary to set one simulation target range for one inundation prediction range. As shown in FIG. 5A, one simulation target range is associated with a plurality of inundation prediction ranges 203 to 205. A range 213 may be set.

  For example, in FIG. 5A, when an earthquake occurs at the epicenter location 221, a tsunami inundation prediction simulation in the inundation prediction range 201 corresponding to the simulation target range 211 is executed. When an earthquake occurs at the epicenter position 222, the epicenter position 222 is within the region of the simulation target range 213, and therefore a tsunami inundation prediction simulation in the corresponding inundation prediction ranges 203 to 205 is executed. In addition, when an earthquake occurs at the epicenter location 223, since the epicenter location 223 is within the simulation target ranges 212 and 213, a tsunami inundation prediction simulation is executed in the corresponding inundation prediction range 202 and the inundation prediction ranges 203 to 205. Is done. Note that even if an earthquake occurs at the epicenter location 224, the epicenter location 224 is not included in any simulation target range, and therefore the tsunami inundation prediction simulation is not executed.

  The mesh size of the simulation target range is the size of a unit (mesh) for calculating the propagation of the tsunami (see the simulation target range 211 in FIG. 5A). Moreover, the mesh size of the inundation prediction range is the size of a unit when performing inundation prediction by a tsunami (see FIG. 5B). For example, it is desired to perform inundation prediction with a resolution (lattice size) of about 10 m × 10 m as a mesh size of the inundation prediction range.

  Phenomenon reproduction time is information that defines the period of tsunami inundation prediction from the occurrence of an earthquake. For example, when simulating (predicting) the inundation height in the inundation prediction range from the occurrence of the earthquake to 6 hours later, 6 hours is set as the phenomenon reproduction time.

  The fault parameters are as described above.

  The program related to tsunami inundation prediction uses the above parameters to output data related to changes over time in the inundation height (water surface height) for each unit region (mesh; lattice) forming the inundation prediction range. For example, the program related to tsunami inundation prediction outputs information as shown in FIG. 6 as a simulation result related to tsunami inundation prediction. For example, referring to FIG. 6, it can be seen that at the mesh position (1, 1), the flood height changes as A1, A2, A3, and A4 with time. Further, when the change in the flood height with time at the mesh position is obtained, information such as the tsunami arrival time, the maximum flood depth, and the maximum water level can be generated.

  In addition, it is possible to estimate damage caused by tsunami using the simulation results. For example, the damage caused by the tsunami can be estimated by superimposing the inundation height at each mesh position with the population distribution and building information at the mesh position.

[Data processing server]
Next, details of the data processing server 40 will be described.

  FIG. 7 is a diagram illustrating an example of the internal configuration of the data processing server 40. Referring to FIG. 7A, the data processing server 40 includes a communication control unit 301, an inundation prediction request unit 302, a verification request processing unit 303, and a storage unit 304.

  The communication control unit 301 is a means for controlling communication with various devices (the local government terminal 10, the Japan Meteorological Agency computer 20, the laboratory computer 30, and the control device 50) via the network. When receiving the earthquake early warning, the communication control unit 301 registers the content of the emergency earthquake early warning in the storage unit 304 as a log.

  The communication control unit 301 performs an authentication procedure required when an external apparatus uses the parallel computer system 60. Specifically, the communication control unit 301 performs processing related to user authentication and server authentication using a password or an electronic certificate with the control device 50.

  The communication control part 301 will hand over these data to the inundation prediction request | requirement part 302, if an earthquake early warning and a fault parameter are received. When the communication control unit 301 receives a verification request to be described later from the control device 50, the communication control unit 301 passes the verification request to the verification request processing unit 303.

  The inundation prediction requesting unit 302 determines whether or not to transmit an inundation prediction request to the management center 2 (the control device 50) based on the emergency earthquake bulletin, and performs the tsunami inundation prediction when a predetermined condition is satisfied. This is means for requesting the management center 2 to execute such simulation. The inundation prediction request unit 302 selects the management center 2 that requests execution of the tsunami inundation prediction simulation from among the plurality of management centers 2-1 to 2-n. The inundation prediction request unit 302 transmits the inundation prediction request to the control device 50 of the selected management center 2 via the communication control unit 301. However, since it is necessary to include a fault parameter in the inundation prediction request, the inundation prediction request unit 302 transmits the inundation prediction request after receiving the fault parameter from the laboratory computer 30. The inundation prediction request is generated for each inundation prediction range and transmitted to the management center 2.

  The inundation prediction request includes, for example, information as shown in FIG. Referring to FIG. 8, the inundation prediction request includes at least earthquake detailed information, fault parameters, and simulation conditions.

  The inundation prediction requesting unit 302 selects necessary information (for example, earthquake occurrence date / time, epicenter, magnitude, etc.) from the information included in the earthquake early warning and sets it as detailed earthquake information.

  The inundation prediction requesting unit 302 generates a simulation condition using information obtained from the earthquake early warning, a predetermined value, or the like. Specifically, the inundation prediction request unit 302 determines the simulation target range and the inundation prediction range based on the table information stored in the storage unit 304. For example, referring to FIG. 9, the relationship between the simulation target range and the inundation prediction range described with reference to FIG. 5 is stored in the storage unit 304 as table information. The inundation prediction requesting unit 302 specifies the simulation target range including the epicenter obtained from the emergency earthquake bulletin by referring to the table information. Next, the inundation prediction request unit 302 specifies an inundation prediction range corresponding to the specified simulation target range. For example, in the example of FIG. 9, if the epicenter is included in the simulation target range 211, the simulation target range 211 and the corresponding inundation prediction range 201 are selected as simulation conditions to be included in the inundation prediction request. It should be noted that the coordinates (latitude and longitude) of the four vertices forming these ranges can be used to specify the simulation target range and the inundation prediction range.

  Moreover, as an example of a predetermined value among the simulation conditions included in the inundation prediction request, a phenomenon reproduction time is increased. For example, when it is determined in advance as a specification of the tsunami inundation prediction system that the phenomenon from the occurrence of an earthquake to the lapse of 6 hours has been determined as the phenomenon reproduction time, the inundation prediction requesting unit 302 sets 6 hours. Set the simulation conditions as the phenomenon reproduction time. Note that the table information necessary for determining the simulation conditions may not be stored in the storage unit 304 but may be stored in an external database server (not shown). That is, the inundation prediction requesting unit 302 may acquire simulation conditions from an external database server. The required resource amount included in the simulation conditions will be described later.

  Referring to FIG. 7B, the inundation prediction request unit 302 includes a request necessity determination unit 311, a request destination management unit 312, a resource determination unit 313, a request destination determination unit 314, and an inundation prediction request transmission unit 315. And comprising.

  The request necessity determination unit 311 determines whether or not to transmit an inundation prediction request to the management center 2 based on data such as magnitude, epicenter, and epicenter depth included in the emergency earthquake warning. For example, if the magnitude of an earthquake that has occurred is greater than a predetermined value, the epicenter is a marine area, and the depth of the epicenter is shallower than the predetermined value, the request for necessity determination unit 311 transmits a flood prediction request. It can be considered as a condition.

  The request destination management unit 312 is a means for managing information related to each management center 2. Specifically, the request destination management unit 312 manages information on the management center 2 by creating and updating a request destination management table. The request destination management table is stored in the storage unit 304.

  FIG. 10 is a diagram illustrating an example of a request destination management table. Referring to FIG. 10, the request destination management table includes at least a location (latitude, longitude) where each management center 2 is installed, an operating status of each management center, and an available resource amount. The available resource amount is the number of computation nodes that can actually be used for job execution among the computation nodes constituting the parallel computer system 60. For example, if the parallel computer system 60 is composed of 200 computing nodes and 100 computing nodes out of 200 are under maintenance, the amount of available resources is 100 (100 computing nodes). Further, when the job cannot be executed by the parallel computer system 60 due to the maintenance of the entire management center 2 or the like, the operation status of the management center becomes “suspended”. If the management center 2 is dormant, the available resource amount is naturally “0”.

  The system administrator registers information related to the location of each management center 2 in the request destination management table before system operation. Further, the request destination management unit 312 provides information (operation status, available resources) on the parallel computer system 60 managed by each control device 50 to the control device 50 of each management center 2 at a predetermined time or periodically. Inquiry). The request destination management unit 312 updates the request destination management table using the result of the inquiry. The request destination management unit 312 sets the operation status of the management center 2 that has responded to the inquiry from each control device 50 to “operation”. On the other hand, when a response to the inquiry cannot be obtained, the request destination management unit 312 sets the operation status of the management center 2 having no response to “suspended”.

  In addition, when the request necessity determination unit 311 determines that the request necessity determination unit 311 transmits the inundation prediction request, the request destination management unit 312 makes the above inquiry to the control device 50 of each management center 2, and updates the latest information regarding each management center 2. Information is acquired and reflected in the request destination management table. More specifically, since it is necessary to include a fault parameter in the inundation prediction request as described above, the request management unit 312 determines the period during which the laboratory computer 30 calculates the fault parameter (emergency earthquake early warning). The above inquiry and the request destination management table are updated in the period after the acquisition of the above and before the transmission of the flood prediction request.

  The resource determination unit 313 is a means for determining a resource amount (the number of calculation nodes) when executing the tsunami inundation prediction simulation in the management center 2 (correctly the parallel computer system 60) to which the simulation execution is requested. Specifically, the resource determination unit 313 requires the resources of the parallel computer system 60 that are required to finish executing the requested tsunami inundation prediction simulation (program) within a predetermined time (for example, several minutes). Determine the amount.

  Here, as a result of the examination by the inventors, the calculation amount (processing time) of the tsunami inundation prediction simulation executed by the parallel computer system 60 differs depending on the simulation conditions. Specifically, it is known that the time required for the tsunami inundation prediction simulation varies depending on the simulation target range, the size (area) of the inundation prediction range, the mesh size, and the like. Therefore, depending on the simulation condition input to the parallel computer system 60, the tsunami inundation prediction simulation may not be completed within a predetermined time.

  Therefore, the resource determination unit 313 determines resources to be secured in the parallel computer system 60 according to the contents of the tsunami inundation prediction simulation requested to the parallel computer system 60. For example, the resource determination unit 313 refers to the resource determination table illustrated in FIG. 11 to determine the amount of resources necessary to end the simulation related to the inundation prediction request within a predetermined time.

  The resource determination table shown in FIG. 11 defines the relationship between the inundation prediction range and the amount of resources (number of calculation nodes) necessary to obtain the result of the inundation prediction request within a predetermined time. The resource determination table is registered in the storage unit 304.

  Note that it is desirable for the system administrator to set the resource determination table shown in FIG. 11 in the data processing server 40 before operating the tsunami inundation prediction system shown in FIG. For example, regarding the various simulation conditions, the system administrator causes the parallel computer system 60 (or an equivalent parallel computer system) to execute a simulation related to tsunami inundation prediction, and the relationship between the resources used and the processing time is shown in FIG. The table information shown is created and set in the data processing server 40.

  The request destination determination unit 314 is a means for determining the management center 2 that requests execution of the tsunami inundation prediction simulation. Specifically, the request destination determination unit 314 calculates the degree of influence (earthquake influence degree) of the earthquake that has occurred on each management center 2. Next, the request destination determination unit 314 gives priority to the management center 2 having a small earthquake influence level and selects it as a request destination candidate for the tsunami inundation prediction simulation. However, it is necessary that the management center 2 selected as a candidate for execution request of simulation is operating.

  In the first embodiment, the distance between the epicenter and the management center 2 is calculated as the earthquake influence degree as an index for measuring the earthquake influence degree. Specifically, the request destination determination unit 314 calculates the distance between the two based on the information managed in the request destination management table (location of the management center 2) and the location of the epicenter, and sets it as the earthquake impact level. . In this case, the greater the distance between the epicenter and the management center 2 is, the smaller the seismic influence is.

  Further, the request destination determination unit 314 calculates the execution capacity of the tsunami inundation prediction simulation in the management center 2 (parallel computer system 60) selected as the request destination candidate. Decide on the forecast simulation destination. If the management center 2 selected as the candidate for the request determines that the tsunami inundation prediction simulation cannot be processed (there is no room for execution), the request destination determination unit 314 first becomes the request destination for the simulation. Next, the management center 2 having the smallest earthquake impact level (next to the epicenter) next to the management center 2 is selected as a candidate for the execution request destination of the tsunami inundation prediction simulation.

  For example, as shown in FIG. 12A, it is assumed that an earthquake occurs at the epicenter 222 (see FIG. 5A). Since the hypocenter position 222 is included in the simulation target range 213, the inundation prediction range 203 to 205 is the inundation prediction range. In the following description, the tsunami inundation prediction simulation in the inundation prediction range 203 is referred to as a tsunami inundation prediction simulation 1 (or simply simulation 1). Similarly, the tsunami inundation prediction simulation in the inundation prediction range 204 is denoted as tsunami inundation prediction simulation 2, and the tsunami inundation prediction simulation in the inundation prediction range 205 is denoted as tsunami inundation prediction simulation 3, respectively.

  Further, as described above, in each inundation prediction range, a resource amount (necessary resource amount; the number of calculation nodes) necessary for executing the tsunami inundation prediction simulation within a predetermined time is determined. Here, it is assumed that the resource amount is determined as shown in FIG. Furthermore, when the epicenter is determined, the distance between the epicenter and the management center 2 can be calculated from the location (coordinates) of each management center 2 stored in the request destination management table. Here, it is assumed that the distance as shown in FIG. Furthermore, it is assumed that the latest information regarding each management center 2 is registered as shown in FIG. Note that the various types of information shown in FIG. 12 are merely examples, and are not intended to limit the amount of resources necessary for executing the simulation.

  The determination of the execution request destination of the tsunami inundation prediction simulation by the request destination determination unit 314 will be described under various conditions shown in FIG. In the example of FIG. 12, since the tsunami inundation prediction simulation is executed for the inundation prediction ranges 203 to 205, three inundation prediction requests are generated and transmitted to the management center 2 determined by the request destination determination unit 314. .

  First, the request destination determination unit 314 selects the management center 2-1 that is located farthest from the epicenter and is in operation as a candidate for a simulation execution request destination. Next, the request destination determination unit 314 compares the resource amount required for the execution of the tsunami inundation prediction simulation 1 with the available resource amount of the selected management center 2-1. As a result of the comparison, the available resource amount of the management center 2-1 is larger, so the request destination determination unit 314 sets the selected management center 2-1 as the execution request destination of the tsunami inundation prediction simulation 1. When the request destination determination unit 314 determines the execution request destination of the tsunami inundation prediction simulation, the request destination determination unit 314 notifies the request destination management unit 312 to that effect, and updates the available resource amount via the request destination management unit 312. I do. In the example of FIG. 12, the available resource amount of the management center 2-1 is updated to 100 by executing the tsunami inundation prediction simulation 1 in the management center 2-1.

  Next, the request destination determination unit 314 determines an execution request destination of the tsunami inundation prediction simulation 2 (corresponding to the inundation prediction range 204). In this case, the request destination determination unit 314 determines whether or not the management center 2-1 that has already been selected as a simulation execution destination candidate has an execution capacity of the inundation prediction simulation 2, and based on the result, the management center Determine whether or not 2-1 is the execution request destination. In the example of FIG. 12, the resource amount necessary for executing the tsunami inundation prediction simulation 2 is 50, and the available resource amount of the management center 2-1 is 100. Accordingly, since the management center 2-1 has the capacity to execute the tsunami inundation prediction simulation 2, the request destination determination unit 314 determines the execution request destination of the tsunami inundation prediction simulation 2 to the management center 2-1. As a result, the available resource amount of the management center 2-1 is 50.

  Next, the request destination determination unit 314 determines an execution request destination of the tsunami inundation prediction simulation 3 (corresponding to the inundation prediction range 205). Also in this case, the request destination determination unit 314 determines whether or not to make the management center 2-1 an execution request destination according to the remaining capacity of the management center 2-1. In the example of FIG. 12, the resource amount necessary for executing the tsunami inundation prediction simulation 3 is 100, and the available resource amount of the management center 2-1 is 50. Therefore, since the management center 2-1 does not have the remaining capacity to execute the tsunami inundation prediction simulation 3, the request destination determination unit 314 does not select the management center 2-1 as the execution request destination of the tsunami inundation prediction simulation 3.

  Next, the request destination determination unit 314 selects the management center 2 far from the epicenter position next to the management center 2-1 in which there is no remaining simulation execution capacity. In the example of FIG. 12, the management center 2-2 corresponds. However, since the operation status of the management center 2-2 is suspended, the request destination determination unit 314 does not make the management center 2-2 a simulation execution request destination candidate. Since the management center 2-3 far from the epicenter is next to the management center 2-2, the request destination determination unit 314 selects the management center 2-3 as a simulation execution destination candidate. Next, as already described, the request destination determination unit 314 performs the tsunami inundation based on the available resource amount of the selected management center 2-3 and the resource amount necessary for executing the tsunami inundation prediction simulation 3. The execution request destination of the prediction simulation 3 is determined. In the example of FIG. 12, since the management center 2-3 can execute the tsunami inundation prediction simulation 3, the management center 2-3 is determined as the execution request destination of the tsunami inundation prediction simulation 3.

  Thus, the request destination determination unit 314 gives priority to the management center 2 located far from the epicenter and selects the execution request destination of the tsunami inundation prediction simulation. Further, even if there is a management center 2 far from the epicenter, if the management center 2 is not operating, the request destination determination unit 314 may select the management center 2 as a simulation execution request destination. Absent.

  As described above, since each of the data processing servers 40-1 to 40-m performs the same operation in determining the execution destination of the simulation, each data processing server 40 has the same contents to the same management center 2. A flood prediction request is sent. For example, referring to FIG. 13, each data processing server 40 transmits an inundation prediction request according to simulations 1 and 2 (solid lines in FIG. 13) toward the management center 2-1, and toward the management center 2-3. A flood prediction request according to simulation 3 (broken line in FIG. 13) is transmitted.

  The operation of the request destination determination unit 314 is summarized as shown in the flowchart of FIG.

  The request destination determination unit 314 calculates the earthquake impact level for each management center 2 and selects execution destination candidates for the tsunami inundation prediction simulation (step S101). Specifically, the request destination determination unit 314 preferentially selects the management center 2 that is in operation and is located far from the epicenter as a candidate for the execution request destination.

  Next, the request destination determination unit 314 determines whether or not the selected management center 2 has an execution capacity for the tsunami inundation prediction simulation (step S102). If there is no execution capacity (No at Step S102), the process proceeds to Step S101, and a new simulation execution request destination candidate is selected. If there is an execution capacity (step S102, Yes branch), the request destination determination unit 314 determines the selected management center 2 as a simulation execution request destination (step S103).

  Next, the request destination determination unit 314 confirms the existence of a tsunami inundation prediction simulation for which the request destination has not been determined (step S104). If the execution request destination of all the tsunami inundation prediction simulations has been determined (step S104, Yes branch), the request destination determination unit 314 ends the process. If the tsunami inundation prediction simulation that needs to determine the request destination remains (step S104, No branch), the request destination determination unit 314 continues the processing after step S102.

  The inundation prediction request transmission unit 315 illustrated in FIG. 7B generates an inundation prediction request (see FIG. 8) including the necessary resource amount determined by the resource determination unit 313. The inundation prediction request transmission unit 315 transmits the generated inundation prediction request to the management center 2 determined by the request destination determination unit 314 via the communication control unit 301.

  The operation of the inundation prediction request unit 302 is summarized as shown in the flowchart of FIG.

  The inundation prediction requesting unit 302 acquires the emergency earthquake bulletin via the communication control unit 301 (step S201).

  The inundation prediction request unit 302 determines whether the earthquake that has occurred satisfies a predetermined condition (step S202).

  If the predetermined condition is not satisfied, the inundation prediction requesting unit 302 ends the process (step S202, No branch).

  If the predetermined condition is satisfied (step S202, Yes branch), the inundation prediction requesting unit 302 waits until the tomographic parameter can be acquired via the communication control unit 301 (step S203), and then acquires the tomographic parameter. (Step S204).

  When the fault parameter can be acquired, the inundation prediction request unit 302 generates an inundation prediction request (step S205).

  The inundation prediction request unit 302 transmits an inundation prediction request to the control device 50 via the communication control unit 301 (step S206).

  A verification request processing unit 303 illustrated in FIG. 7 is a unit that processes a verification request transmitted by the control device 50.

  Here, when receiving the flood prediction request from the data processing server 40, the control device 50 performs a kind of authentication procedure different from normal user authentication using a password or the like. Specifically, when receiving the flood prediction request, the control device 50 inquires of the data processing server 40 whether or not the request is a truly valid request.

  The reason why such an inquiry is necessary is as follows. Although details will be described later, when the parallel computer system 60 executes the simulation related to the tsunami inundation prediction, the jobs already being executed in the parallel computer system 60 are stopped, and the simulation job related to the tsunami inundation prediction is given priority. Executed. Therefore, if a flooding prediction request is transmitted due to an erroneous operation by an administrator of the data processing server 40 and the request is processed by the parallel computer system 60, a serious situation may be caused. For example, an operation test (debugging) of a program installed in the data processing server 40 may be performed for the purpose of testing the operation of the data processing server 40. In that case, execution of a tsunami inundation prediction simulation may be requested | required with respect to the control apparatus 50 by misoperation etc. of an administrator. Many users other than the data processing server 40 use the parallel computer system 60, and it is not allowed to stop such a general user job due to an erroneous operation of the data processing server 40 or the like.

  Therefore, the control device 50 that manages the job to be executed by the parallel computer system 60 inquires the data processing server 40 about the validity of the received inundation prediction request. Such an inquiry is a verification request from the control device 50 described above.

  The verification request transmitted by the control device 50 includes information that allows the data processing server 40 itself to specify the inundation prediction request transmitted by the data processing server 40. For example, earthquake details such as the date and time of earthquake occurrence and magnitude are included in the verification request transmitted by the control device 50.

  When the verification request processing unit 303 acquires the verification request from the control device 50, the verification request processing unit 303 accesses the storage unit 304. The verification request processing unit 303 sends the information from the own device (data processing server 40) to the control device 50 based on the emergency earthquake warning log stored in the storage unit 304 and the content of the verification request acquired from the control device 50. The validity of the transmitted inundation prediction request is determined.

  For example, the verification request processing unit 303 checks whether information that matches information (for example, the date and time of occurrence of an earthquake) included in the acquired verification request is registered in the storage unit 304 as an emergency earthquake warning log. If the information included in the verification request is registered as an emergency earthquake warning log, the verification request processing unit 303 is valid (appropriate) for the inundation prediction request transmitted from the data processing server 40 (inundation prediction request unit 302). It is determined that On the other hand, if the information included in the verification request is not registered as a log of the earthquake early warning, the verification request processing unit 303 indicates that the inundation prediction request transmitted from the data processing server 40 has been transmitted in error (the request is inappropriate). ).

  In this way, the verification request processing unit 303 determines whether or not an earthquake corresponding to the inundation prediction request transmitted from the data processing server 40 has actually occurred (the data processing server 40 has received an emergency earthquake warning corresponding to the earthquake). Whether or not the inundation prediction request is valid. The verification request processing unit 303 returns a determination result (request is appropriate, request is inappropriate) to the control device 50 via the communication control unit 301.

  The operation of the verification request processing unit 303 is summarized as shown in the flowchart of FIG.

  The verification request processing unit 303 acquires a verification request via the communication control unit 301 (step S301).

  The verification request processing unit 303 compares the earthquake information included in the verification request with the emergency earthquake early warning log stored in the storage unit 304, and whether there is an emergency earthquake early warning log corresponding to the earthquake information. (Step S302).

  If the earthquake information of the verification request matches the content of the emergency earthquake warning log (step S302, Yes branch), the verification request processing unit 303 determines that the inundation prediction request from its own device is appropriate (step S303).

  If the earthquake information of the verification request does not match the content of the emergency earthquake warning log (No in step S302), the verification request processing unit 303 determines that the inundation prediction request from its own device is inappropriate (step S304). .

  The verification request processing unit 303 transmits the determination result to the control device 50 (step S305).

  Note that the functions of the data processing server 40 can be realized by a computer program that causes a computer mounted on the data processing server 40 to execute the processing described with reference to FIGS. .

[Control device]
Next, details of the control device 50 will be described.

  FIG. 17 is a diagram illustrating an example of the internal configuration of the control device 50. Referring to FIG. 17, the control device 50 includes a first communication control unit 401, a second communication control unit 402, an inundation prediction request verification unit 403, a simulation instruction unit 404, a simulation result management unit 405, and a storage unit. 406.

  The first communication control unit 401 is means for controlling communication with various computers including the data processing server 40 via a network. The first communication control unit 401 is means for controlling communication with an open network such as the Internet. The first communication control unit 401 is a means for performing processing related to user authentication and server authentication using a password or an electronic certificate with the data processing server 40. The first communication control unit 401 delivers data (for example, a flood prediction request) received from the outside to the flood prediction request verification unit 403. Further, when the first communication control unit 401 receives an inquiry regarding the information of the management center 2 from the data processing server 40, the fact that the inquiry has been received will be described later via the second communication control unit 402. The job management node 61 is notified. The first communication control unit 401 receives a response (reply) from the job management node 61 to the notification, and transmits the received response from the job management node 61 to the data processing server 40. That is, the control device 50 has a function of relaying communication between the data processing server 40 and the job management node 61.

  The second communication control unit 402 is means for controlling communication between the parallel computer system 60 and the database server 70. The second communication control unit 402 is means for controlling communication in an intranet (closed network) to which the parallel computer system 60 and the database server 70 are connected.

  The inundation prediction request verification unit 403 is means for verifying the validity of the inundation prediction request transmitted by the data processing server 40. Specifically, when the flood prediction request verification unit 403 receives the flood prediction request from the data processing server 40, the flood prediction request verification unit 403 transmits a verification request to the data processing server 40 via the first communication control unit 401. For example, the inundation prediction request verification unit 403 transmits all or part of the contents included in the inundation prediction request received from the data processing server 40 to the data processing server 40. More specifically, the inundation prediction request verification unit 403 includes a verification request including matters that allow the data processing server 40 to identify at least the inundation prediction request transmitted by the data processing server 40, such as the date and time of earthquake occurrence and the magnitude. Transmit to the data processing server 40.

  As described above, the data processing server 40 that has received the verification request determines the validity of the inundation prediction request, and returns a determination result (request is appropriate, request is inappropriate) to the control device 50. The inundation prediction request verification unit 403 acquires the determination result via the first communication control unit 401. At this time, if the determination result is “request is inappropriate”, the inundation prediction request verification unit 403 discards the received inundation prediction request and does not perform further processing. On the other hand, if the determination result is “request is appropriate”, the inundation prediction request verification unit 403 delivers the inundation prediction request to the simulation instruction unit 404.

  Note that, as described above, each of the data processing servers 40 transmits an inundation prediction request having the same content to each management center 2 (control device 50). However, since the inundation prediction request having the same content is not necessary, the inundation prediction request verification unit 403 validates the inundation prediction request that has arrived earliest among the plurality of inundation prediction requests and discards other inundation prediction requests.

  The simulation instruction unit 404 is means for instructing the parallel computer system 60 to execute a simulation. When acquiring the flood prediction request, the simulation instruction unit 404 instructs the parallel computer system 60 to activate an emergency job queue described later. In addition, the simulation instruction unit 404 generates a script file that describes requirements for the parallel computer system 60 to execute a simulation related to tsunami inundation prediction, and the script file is transmitted to the parallel computer via the second communication control unit 402. To system 60. Alternatively, the simulation instruction unit 404 may store the generated script file in the database server 70 and notify the parallel computer system 60 to that effect. That is, the simulation instruction unit 404 describes in the script file the simulation requirements for the tsunami inundation prediction simulation that is executed in order to obtain the inundation prediction result for the inundation prediction request in the parallel computer system 60, and executes the simulation in parallel computer system 60. To instruct.

  For example, the simulation instruction unit 404 generates a script file including information as shown in FIG. The simulation instruction unit 404 adds a simulation priority related to the tsunami inundation prediction to the acquired inundation prediction request, and generates a script file. Referring to FIG. 18, “Emergency” is set as the priority of simulation related to tsunami inundation prediction. As described above, when the simulation instructing unit 404 acquires the inundation prediction request, the simulation priority (job priority) for the tsunami inundation prediction is set to “emergency”. The handling when the priority is set to “emergency” will be described later.

  Moreover, the simulation instruction | indication part 404 adds the information which designates the simulation object range and the terrain data of the inundation prediction range to the simulation conditions included in the inundation prediction request. As described above, when executing the simulation related to the tsunami inundation prediction in the parallel computer system 60, the terrain data is required, and therefore the terrain data is specified using the script file. In addition, in order to execute the simulation related to the tsunami inundation prediction, information related to the simulation target range and the mesh size of the inundation prediction range is also required. However, these pieces of information are predetermined and are not included in the simulation conditions of the script file illustrated in FIG. However, it goes without saying that information regarding the mesh size may be included in the simulation conditions of the script file.

  As described above, a tsunami inundation prediction simulation is executed for each inundation prediction range. Therefore, the control device 50 of each management center 2 may cause the parallel computer system 60 controlled and managed by each control center 2 to execute a plurality of tsunami inundation prediction simulations in parallel. In this case, the simulation instruction unit 404 generates a script file corresponding to each inundation prediction range, and instructs the parallel computer system 60 to execute the simulation.

  The simulation result management unit 405 is means for managing (handling) the simulation result by the parallel computer system 60. When the simulation result management unit 405 receives a notification from the parallel computer system 60 that the execution of the simulation related to the tsunami inundation prediction is completed, the simulation result management unit 405 acquires the simulation result via the second communication control unit 402. The simulation result management unit 405 transmits the simulation result to the transfer server 80 via the first communication control unit 401. Specifically, when receiving the simulation result, the simulation result management unit 405 transmits the simulation result to the transfer server 80 as a real-time tsunami inundation prediction as it is or after processing. When a plurality of tsunami inundation prediction simulations are executed in one parallel computer system 60, the simulation result management unit 405 transfers the simulation results in the order in which the execution of the simulation is completed or in a batch. To 80. In addition, the processing of the inundation prediction result performed by the simulation result management unit 405 includes, for example, a visualization process in which each mesh is color-coded according to the maximum inundation height at each mesh position.

  The simulation result management unit 405 needs to transmit the real-time tsunami inundation prediction to the local government terminal 10 that needs the information. For example, referring to FIG. 5A, when a tsunami inundation prediction is performed in the inundation prediction range 203, a real-time tsunami inundation prediction is transmitted to the local government terminal 10 installed in the local government in the inundation prediction range 203. There is a need. Therefore, the simulation result management unit 405 transmits the real-time tsunami inundation prediction to the local government terminal 10 that needs the real-time tsunami inundation prediction and the transfer server 80 capable of transferring information. As described above, the simulation result management unit 405 has a function of selecting the transfer server 80 that is the transmission destination of the real-time tsunami inundation prediction.

  The simulation result management unit 405 manages the connection state between the transfer server 80 and the local government terminal 10 in order to enable the above selection process. Specifically, the simulation result management unit 405 manages the connection state using a result transmission destination management table as shown in FIG. Referring to FIG. 19, in the result transmission destination management table, for each transfer server 80, a connection state regarding each local government terminal 10 is stored. For example, referring to FIG. 19, it can be seen that the connection between the transfer server 80-1 and the municipal terminal 10-2 is disconnected, and the connection between the transfer server 80-2 and the municipal terminal 10-5 is disconnected. The result transmission destination management table is stored in the storage unit 406.

  The simulation result management unit 405 requests each transfer server 80 to provide a connection state with the local government terminal 10 before transmitting the real-time tsunami inundation prediction to the transfer server 80. For example, the simulation result management unit 405 makes the above request at the timing when the simulation instruction unit 404 instructs the parallel computer system 60 to execute the job or when the notification indicating that the simulation is completed is received. When the simulation result management unit 405 receives a response to the request, the simulation result management unit 405 updates the result transmission destination management table using the response. Alternatively, if the simulation result management unit 405 does not receive a response from the transfer server 80 despite the above request, the transfer server 80 without the response is not connected to all local government terminals 10. Treat as a thing (the connection state with all local government terminals 10 is set to “disconnected” and the table is updated).

  When transmitting the real-time tsunami inundation prediction to the transfer server 80, the simulation result management unit 405 specifies the transfer destination of the real-time tsunami inundation prediction by the transfer server 80 while referring to the result transmission destination management table. For example, referring to FIG. 19, when it is necessary to transmit the real-time tsunami inundation prediction to the local government terminal 10-2, the simulation result management unit 405 sets the transfer destination of the real-time tsunami inundation prediction to the local government terminal 10-2. Meanwhile, the real-time tsunami inundation prediction is transmitted to the transfer server 80-2 connected to the terminal (there is no fault in the network or the like). In addition, when there are a plurality of transfer servers 80 in which connection with the target municipality terminal 10 is secured, one may be selected from the plurality of transfer servers 80 and a real-time tsunami inundation prediction may be transmitted. For example, in the example of FIG. 19, when transmitting a real-time tsunami inundation prediction to the local government terminal 10-1, the real-time tsunami inundation prediction is transmitted to either one of the transfer servers 80-1 and 80-2.

  The operation of the control device 50 is summarized as shown in the flowchart of FIG.

  The inundation prediction request verification unit 403 acquires an inundation prediction request (step S401).

  Next, the inundation prediction request verification unit 403 determines the validity of the inundation prediction request (step S402). If the inundation prediction request is not valid (step S402, No branch), the control device 50 discards the inundation prediction request and ends the process. If the inundation prediction request is valid (step S402, Yes branch), the simulation instruction unit 404 generates a script file and instructs the parallel computer system 60 to execute a tsunami inundation prediction simulation (step S403). At that time, the simulation instruction unit 404 sets the priority of the simulation related to the tsunami inundation prediction to “emergency”.

  When the simulation by the parallel computer system 60 is completed, the simulation result management unit 405 transmits the simulation result to the transfer server 80 via the first communication control unit 401 (step S404). The simulation result is transmitted to the local government terminal 10 via the transfer server 80.

  Note that the function of the control device 50 can be realized by a computer program that causes a computer mounted on the control device 50 to execute the processing described with reference to FIG.

[Parallel computer system]
Next, details of the parallel computer system 60 will be described.

  FIG. 21 is a diagram illustrating an example of a schematic configuration of the parallel computer system 60. Referring to FIG. 21, the parallel computer system 60 includes a job management node 61 and a plurality of calculation nodes 62-1 to 62-i (where i is an integer of 2 or more). In the following description, when there is no particular reason for distinguishing the calculation nodes 62-1 to 62-i, they are simply expressed as “calculation node 62”.

  The job management node 61 is a device that manages the resources (calculation node 62) constituting the parallel computer system 60. The job management node 61 receives a script file, schedules a job to be input to the calculation node 62, monitors a job execution status in the calculation node 62, and the like. Further, when the job management node 61 receives an inquiry regarding the information of the management center 2 via the control device 50, the job management node 61 generates a response to the inquiry (the number of available calculation nodes 62), and the data processing server Reply to 40.

  Each of the computation nodes 62 has a resource (resource) for executing a job (program). Specifically, the computing node 62 includes an arithmetic device 501 such as a CPU (Central Processing Unit), a memory device 502 such as a RAM (Random Access Memory), and a storage device 503 such as an HDD (Hard Disc Drive). Consists of including. Further, the computing node 62 has network resources (not shown) for communicating with the job management node 61 and the database server 70.

  As described above, the job management node 61 manages jobs executed by the calculation node 62. FIG. 22 is a diagram illustrating an example of the internal configuration of the job management node 61. Referring to FIG. 22, the job management node 61 includes a communication control unit 601, a job queue management unit 602, a job control unit 603, a job queue 611, and an emergency job queue 612.

  The communication control unit 601 is means for controlling communication with the control device 50, the calculation node 62, the database server 70, and the like.

  The job queue management unit 602 is a unit that selects and manages queues (job queue 611 and emergency job queue 612) to which jobs are submitted in accordance with a script file acquired from the control device 50. The job queue management unit 602 manages the order of jobs to be executed by the calculation node 62 using the job queue 611. When jobs are added to the job queue 611, jobs are submitted to the calculation node 62 in the order of the added jobs (the order in which jobs were added to the job queue 611 in the past) (see FIG. 23A). ).

  The job queue management unit 602 manages in which order jobs are submitted to the job queue and what jobs are submitted to which computation nodes 62 using a scheduling table (see FIG. 23B). In the example shown in FIG. 23B, JOB1 and JOB2 are entered in the job queue in this order, and the assignment destination calculation node of JOB1 is the calculation node 62-1. Further, as in JOB3 shown in FIG. 23B, one job may be submitted to a plurality of calculation nodes 62.

  Thus, normal jobs (jobs by general users of the parallel computer system 60) are managed by the scheduling table shown in FIG.

  The job management node 61 has a job queue called an emergency job queue 612 that is different from the normal job queue (job queue 611). When the job queue management unit 602 receives an emergency job queue activation instruction from the control device 50, the job queue management unit 602 activates the emergency job queue 612. When the emergency job queue 612 is activated and a job is added to the emergency job queue 612, the job in the emergency job queue 612 has priority over other jobs (jobs accumulated in the job queue 611). It is input to the calculation node 62 (see FIG. 24).

  When the job queue management unit 602 acquires the script file related to the tsunami inundation prediction from the control device 50, the job queue management unit 602 adds the job related to the script file to the emergency job queue 612. More specifically, the job queue management unit 602 confirms the priority of the acquired script file. If the priority is “emergency”, the job queue management unit 602 adds the job of the script file to the emergency job queue 612. That is, a job (simulation related to tsunami inundation prediction) executed due to the inundation prediction request by the data processing server 40 is performed in a method different from the job management using the job queue 611 and the scheduling table shown in FIG. Managed. In addition, the simulation related to the tsunami inundation prediction described in the script file is handled as a job with the highest priority.

  The job control unit 603 is means for causing the calculation node 62 to execute a job added to the job queue (job queue 611, emergency job queue 612). If no job exists in the emergency job queue 612, the job control unit 603 instructs the assignment destination calculation node of the scheduling table to execute the job in the order stored in the job queue 611.

  On the other hand, if a job (specifically, a job related to tsunami inundation prediction) exists in the emergency job queue 612, the job control unit 603 causes the calculation node 62 to preferentially execute the job. At that time, the job control unit 603 confirms the necessary resource amount of the script file transmitted from the control device 50, and causes the number of calculation nodes 62 to execute the job according to the necessary resource amount.

  More specifically, the job control unit 603 instructs the required number of calculation nodes 62 to stop the job currently being executed. Next, the job control unit 603 instructs the calculation node 62 to execute a job in the emergency job queue 612 (job related to tsunami inundation prediction). Next, when the job relating to the tsunami inundation prediction is completed at each calculation node 62, the job control unit 603 instructs to restart the previously stopped job. In addition, when the job control unit 603 confirms that the job related to the tsunami inundation prediction is completed, the job control unit 603 notifies the control device 50 accordingly.

  Note that when a plurality of jobs are submitted to the emergency job queue 612 (when a plurality of jobs are executed in parallel), the job control unit 603 is based on information related to “required resource amount” of each script file. The necessary calculation node 62 is secured. For example, in the example shown in FIG. 12, the simulation of the inundation prediction ranges 203 and 204 is executed in parallel by one parallel computer system 60. At that time, the job control unit 603 includes 100 calculation nodes 62 for executing the simulation corresponding to the inundation prediction range 203, and 50 calculation nodes 62 for executing the simulation corresponding to the inundation prediction range 204. , Respectively, and instruct the execution of the simulation.

  Each calculation node 62 includes a first memory area for executing a normal job and a second memory area for executing an urgent job (job related to tsunami inundation prediction). The calculation node 62 instructed by the job control unit 603 to stop the job being executed stops access to the first memory area. Further, the computing node 62 instructed to resume the stopped job uses the data in the first memory area to resume execution of the stopped job.

  The operation of the parallel computer system 60 is summarized as shown in the flowchart of FIG.

  First, the job management node 61 acquires a script file related to job execution from the control device 50 (step S501).

  Next, the job queue management unit 602 of the job management node 61 determines whether or not the priority of the job described in the script file is set to “emergency” (step S502).

  If “emergency” is not set (step S502, No branch), the job queue management unit 602 adds a job related to the script file to the job queue 611 (step S503). The job added to the job queue 611 is executed according to the scheduling table.

  On the other hand, if “emergency” is set (step S502, Yes branch), the job queue management unit 602 adds a job related to the script file (job related to tsunami inundation prediction) to the emergency job queue 612 (step S504). ).

  Next, the job control unit 603 selects a necessary calculation node 62 based on information related to “necessary resource amount” of the script file related to the tsunami inundation prediction (step S505). For example, if the required resource amount described in the script file is A1, the job control unit 603 selects the A1 calculation nodes 62 as calculation nodes that execute a job related to tsunami inundation prediction.

  The job control unit 603 instructs the selected calculation node 62 to stop the job being executed (step S506).

  Thereafter, the job control unit 603 instructs each calculation node 62 to execute a job related to the tsunami inundation prediction added to the emergency job queue 612 (step S507). The selected calculation node 62 executes a job related to tsunami inundation prediction. At that time, the calculation node 62 acquires terrain data necessary for tsunami inundation prediction from the database server 70. Further, the calculation node 62 executes a simulation related to the tsunami inundation prediction under the simulation conditions described in the script file. The computation node 62 that has finished executing the simulation stores the result in the database server 70.

  The job control unit 603 instructs each computation node 62 that has completed the simulation to resume execution of the stopped job (step S508).

  The job control unit 603 notifies the control device 50 of the end of the simulation (step S509).

[Forwarding server]
Next, details of the transfer server 80 will be described.

  FIG. 26 is a diagram illustrating an example of the internal configuration of the transfer server 80. Referring to FIG. 26, the transfer server 80 includes at least a communication control unit 701, a local government terminal management unit 702, and a result transfer unit 703.

  The communication control unit 701 is means for controlling communication with the local government terminal 10, the control device 50, and the like.

  The local government terminal management unit 702 is a means for managing a connection state between the transfer server 80 and each local government terminal 10. Specifically, when the local government terminal management unit 702 receives a request for providing a connection state with the local government terminal 10 from the control device 50, the local government terminal management unit 702 confirms the connection with each local government terminal 10, and The result is returned to the requested control device 50. For example, the local government terminal management unit 702 uses a protocol such as SNMP (Simple Network Management Protocol) to grasp the connection state between the local apparatus (transfer server 80) and each local government terminal 10.

  When the result transfer unit 703 receives the real-time tsunami inundation prediction from the control device 50, the result transfer unit 703 transfers the real-time tsunami inundation prediction to the transfer destination (local government terminal 10) notified from the control device 50.

[System operation]
Next, the operation of the tsunami inundation prediction system according to the first embodiment will be described with reference to FIG.

  When an earthquake occurs, the Meteorological Agency computer 20 of the Japan Meteorological Agency distributes an earthquake early warning (Step S01).

  The data processing server 40 receives the earthquake early warning and determines whether or not it is necessary to predict tsunami inundation due to the occurred earthquake (step S02). For example, the data processing server 40 determines whether or not an earthquake that meets the conditions such that the magnitude of the earthquake that occurred first is 7 or more, the epicenter is a sea area, and the depth is less than 70 km has occurred. Determine the necessity of inundation prediction.

  When an earthquake occurs, the laboratory computer 30 analyzes the motion of the fault due to the earthquake and transmits the fault parameter to the data processing server 40 (step S03).

  The data processing server 40 that has acquired fault parameters from the laboratory computer 30 and has determined that inundation prediction is necessary prioritizes the management center 2 that seems to be less affected by the earthquake that occurred, and performs simulation related to tsunami inundation prediction. A request destination is determined (step S04). More specifically, the data processing server 40 preferentially uses the management center 2 existing at a position far from the epicenter as the execution request destination of the tsunami inundation prediction simulation.

  Thereafter, the data processing server 40 makes a flood prediction request to the control device 50 with the fault parameters acquired from the laboratory computer 30 and the conditions (simulation conditions) for performing the simulation related to the tsunami flood prediction (step S05). In addition, since each data processing server 40 has an equivalent function, a plurality of inundation prediction requests are transmitted to the same management center 2.

  The control device 50 that has received the inundation prediction request determines the validity of the received inundation prediction request by, for example, inquiring the data processing server 40 (step S06).

  If the inundation prediction request is valid (the inundation prediction request is appropriate), the control device 50 transmits the script file to the parallel computer system 60 while setting the priority of the simulation related to the inundation prediction to “emergency” (step). S07).

  The parallel computer system 60 (job management node 61) that has received the script file submits a job relating to the tsunami inundation prediction to the emergency job queue 612 (step S08).

  Further, the parallel computer system 60 causes the number of calculation nodes 62 described in the script file to execute a job related to tsunami inundation prediction (step S09).

  When the simulation is completed, the inundation prediction result (simulation result) is transmitted to the control device 50 (step S10).

  The control device 50 requests each transfer server 80 to provide a connection state with the local government terminal 10 and updates the result transmission destination management table based on the response result (step S11). Next, the control device 50 transmits the real-time tsunami inundation prediction to the transfer server 80 in which the connection with the target local government terminal 10 is secured (step S12).

  The transfer server 80 transfers the real-time tsunami inundation prediction to the transfer destination (local government terminal 10) instructed by the control device 50 (step S13).

  As described above, the data processing server 40 according to the first embodiment starts a series of processes related to tsunami inundation prediction based on information generated by an earthquake that has actually occurred, such as an emergency earthquake warning. In the tsunami inundation prediction system according to the first embodiment, since the process from the occurrence of an earthquake to the distribution of real-time tsunami inundation prediction (from step S01 to step S13 in FIG. 27) proceeds without human intervention, There will be no problems such as delaying or stopping delivery of tsunami inundation prediction results due to factors.

  Furthermore, in the tsunami inundation prediction system according to the first embodiment, a simulation related to tsunami inundation prediction is executed using a parallel computer system 60 (supercomputer) that has a computational capability much higher than that of a general computer. Therefore, for example, tsunami inundation prediction in the terrestrial area with a high resolution such as a mesh size of the inundation prediction range of 10 m × 10 m (land tsunami run-up prediction) can be performed in a short time (for example, several tens of minutes) It can be provided to local governments.

  The parallel computer system 60 is a computer used by researchers all over the country, and many jobs by these users are executed in the parallel computer system 60. Therefore, if the control device 50 causes the parallel computer system 60 to execute a job related to the tsunami inundation prediction in response to the inundation prediction request transmitted in error, the job of many users is temporarily stopped even if it is temporarily stopped. Can be a big problem. Therefore, the control device 50 that controls and manages the parallel computer system 60 verifies whether the request from the data processing server 40 (inundation prediction request) is issued in response to an actually occurring earthquake (FIG. 27). Step S06), and when it is determined that the general job being executed in the parallel computer system 60 is allowed to be stopped, the parallel computer system 60 is instructed to execute the job related to the tsunami inundation prediction. In other words, the control device 50 performs a certain public purpose simulation such as tsunami inundation prediction under a special situation that a huge tsunami may occur due to the occurrence of a huge earthquake. Temporarily occupies resources (compute nodes).

  In addition, the control device 50 simply orders the parallel computer system 60 to execute a job related to the tsunami inundation prediction, and the job related to the tsunami inundation prediction is completed within a predetermined time (for example, within 10 minutes). Command the job to be executed after securing the resources. Therefore, even if the calculation amount (processing time) changes according to the area of the simulation target range or the inundation prediction range, its mesh size, water depth, etc., the simulation result can be obtained within a predetermined time.

  Furthermore, the tsunami inundation prediction system according to the first embodiment includes the parallel computer systems 60 (management center 2) scattered throughout the country as candidates for execution request destinations of the tsunami inundation prediction simulation. That is, in the tsunami inundation prediction system, the management centers 2 are distributed throughout the country, and the simulation execution request destinations are made redundant. The data processing server 40 requests execution of a tsunami inundation prediction simulation to one of the plurality of redundant management centers 2. At that time, the data processing server 40 gives priority to the management center 2 installed at a position far from the epicenter. In other words, it is considered that the management center 2 located far from the epicenter is less affected by the earthquake that caused the tsunami inundation prediction, and if it is such a management center 2, the tsunami inundation prediction simulation is executed more reliably. Because it can. In other words, the management center 2 close to the epicenter and the parallel computer system 60 inside the management center 2 may be in a situation where normal operation is difficult due to the influence of the earthquake. Therefore, the data processing server 40 avoids the management center 2 close to the epicenter and requests the management center 2 considered to be able to execute the simulation reliably to execute the simulation.

  In addition, even if the management center 2 is located far from the epicenter, there may be a situation where simulation cannot be executed due to periodic maintenance or the like. Therefore, the data processing server 40 determines the execution request destination of the simulation in consideration of the operation status of the management center 2. As a result, the tsunami inundation prediction simulation is executed more reliably.

  In addition, since the resources of the parallel computer system 60 (so-called supercomputer) are limited, there is a limit to jobs that can be simultaneously processed (executed in parallel) by one parallel computer system 60. Therefore, the data processing server 40 compares the amount of available resources of the simulation execution request destination with the amount of resources required for the simulation to be requested for execution, and requests the management center 2 having sufficient execution capacity to execute the simulation. With such a correspondence, it is possible to eliminate a job that is not immediately simulated by receiving a flood prediction request. For example, one parallel computer system 60 is requested to execute five tsunami inundation prediction simulations, and the parallel computer system 60 can process only three tsunami inundation prediction simulations simultaneously, and the remaining two tsunami inundation prediction simulations. Can avoid a situation in which it is executed after the previously running simulation is completed. When such a situation occurs, the purpose of providing real-time tsunami inundation prediction to users (such as local government disaster prevention officers) in a short time after the occurrence of an earthquake cannot be achieved.

  In the tsunami inundation prediction system according to the first embodiment, the data processing server 40 that requests the management center 2 to execute the simulation and the transfer server 80 that transfers (distributes) the simulation result to the local government terminal 10 are redundant. It has become. As a result, even if a failure occurs in a part of the data processing server 40 or the transfer server 80 due to the influence of the earthquake that has occurred, the influence on the entire system can be mitigated.

  Furthermore, since the control device 50 transmits the simulation result (real-time tsunami inundation prediction) only to the transfer server 80 in which connection with the target municipality terminal 10 is secured even if an earthquake occurs, It does not cause congestion. When a huge earthquake occurs, it is easily assumed that a huge number of messages cross the network, and network congestion can be a big problem. In the tsunami inundation prediction system according to the first embodiment, the amount of data traversing the network is minimized by limiting the transmission destination of the real-time tsunami inundation prediction.

  As described above, the tsunami inundation prediction system according to the first embodiment can generate disaster information related to tsunami inundation prediction in real time from the occurrence of an earthquake with high accuracy and transmit it to the user. Moreover, since the tsunami inundation prediction system according to the first embodiment has redundant devices (computers) related to the execution of the tsunami inundation prediction simulation, even if a failure occurs in some of the devices, the simulation result is more reliably performed. Can be delivered. That is, the tsunami inundation prediction system according to the first embodiment has high reliability.

  In addition, the structure (FIG. 2) of the tsunami inundation prediction system demonstrated in 1st Embodiment is an illustration, Comprising: It is not the meaning which limits the structure of a system. For example, although five local government terminals 10 are shown, it is not intended to limit the number of local government terminals that acquire real-time tsunami inundation prediction. Alternatively, the data processing server 40 receives the earthquake early warning directly from the Japan Meteorological Agency, but may receive the earthquake early warning via a third party, or obtain information similar to the earthquake early warning from outside the Japan Meteorological Agency. May be. Furthermore, the provision destination of the fault parameter is not limited to one organization. For example, the business operator having the data processing server 40 may make a contract regarding provision of fault parameters with a plurality of research institutions and the like, and the inundation prediction request may be issued using the fault parameter provided most quickly.

  In the first embodiment, a real-time tsunami inundation prediction is transmitted from the transfer server 80 to the local government terminal 10. However, the data processing server 40 and the transfer server 80 may be integrated, and the control device 50 may transmit the simulation result to the data processing server 40. That is, the function of the transfer server 80 may be transferred to the data processing server 40 and the real-time tsunami inundation prediction may be transferred from the data processing server 40 toward the local government terminal 10. That is, the destination to which the control device 50 transmits the simulation result is not limited to the transfer server 80, and the control device 50 can transmit the simulation result to a predetermined destination.

  In the first embodiment, the distance between the epicenter and each management center 2 is used as an index for measuring the degree of earthquake influence (earthquake influence degree) on the management centers 2 in various places. However, the index for measuring the degree of earthquake impact is not limited to the above distance, and may be the seismic intensity at each management center 2. For example, the data processing server 40 (request destination determination unit 314) obtains the seismic intensity of the management centers 2 scattered from various locations based on the earthquake early warning and earthquake information (information on the seismic intensity at each location) provided by the Japan Meteorological Agency, and It may be a degree. Alternatively, the data processing server 40 may predict the seismic intensity at each management center 2 based on data provided from various organizations such as the Japan Meteorological Agency, and may use the seismic intensity as the seismic influence degree. The data processing server 40 sets the management center 2 with a small seismic intensity as the management center 2 with a small seismic influence level, and preferentially requests execution of a tsunami inundation prediction simulation.

  Alternatively, the data processing server 40 may calculate the earthquake influence degree by combining the distance between the epicenter and the management center 2 and the seismic intensity at the management center 2. For example, even if the data processing server 40 has the same seismic intensity, the seismic influence degree of the management center 2 far from the epicenter may be lowered. Alternatively, the data processing server 40 may calculate the earthquake impact degree by combining the distance between the epicenter and the management center 2, the place where the management center 2 is installed, and the seismic intensity at the management center 2. For example, even if the data processing server 40 has the same seismic intensity and the same distance to the epicenter, the seismic influence degree of the management center 2 installed in a place where the ground is more stable may be lowered.

  In the first embodiment, the operation of the request destination determination unit 314 has been described with reference to FIG. At that time, the number of simulations requested to the management center 2 is assumed to be three. However, it goes without saying that the number of requested simulations may be one. Alternatively, each management center 2 may be requested to execute a large number of tsunami inundation prediction simulations so as to cover three or more numbers, for example, coastlines all over Japan. Further, in the first embodiment, it is assumed that the tsunami inundation prediction simulation is executed for all the inundation prediction ranges within the simulation target range, but the inundation prediction range for executing the simulation may be limited. For example, the simulation of the inundation prediction range close to the epicenter may be preferentially executed. For example, as described above, a case is considered where the inundation prediction range across the country is a simulation target. In this case, when an earthquake occurs on the Pacific Ocean side, the simulation of the inundation prediction range on the Sea of Japan side may not be performed, or the priority may be lowered.

  In the first embodiment, information related to the management center 2 is provided directly from the management center 2 to the data processing server 40. However, the data processing server 40 may acquire the information via a database server that collectively manages the information of the management center 2.

  In the first embodiment, the installation location of the management center 2 is managed by registering the latitude and longitude of the management center 2 in the request destination management table. However, the management of the installation location of the management center 2 may be, for example, an address where the management center 2 is installed. For example, if the management center 2 is installed in the A city, an address representing the A city (for example, an address such as a center point of the A city or a city office) may be set as the installation location of the management center 2.

  Or it is not necessary to manage an installation place regarding all the management centers 2. FIG. For example, the management centers 2 arranged in the whole country may be divided into groups, and representatives of the installation locations of each group may be registered in the request destination management table. For example, the management center 2 that exists in the Tohoku region and the management center 2 that exists in the Kanto region may be divided into groups, and the location of each group may be managed as “Tohoku region” or “Kanto region”. .

  Further, the data processing server 40 stores the received earthquake early warning log in the internal storage unit 304, but may store it in an external database server (not shown). In this case, the verification request processing unit 303 accesses an external database server and makes a determination regarding the verification request received from the control device 50.

  In the first embodiment, the simulation target range generated by the inundation prediction requesting unit 302 includes the simulation target range, the inundation prediction range, the phenomenon reproduction time, and the like. It does not have to be included in the request. By using a value determined in advance between the data processing server 40 and the parallel computer system 60, it is not necessary to include information such as the phenomenon reproduction time in the inundation prediction request.

  In the first embodiment, the resource determination unit 313 of the data processing server 40 determines a necessary resource amount based on the table information registered in the storage unit 304 (resource determination table shown in FIG. 11). However, resource determination is not limited to reference to table information. For example, the resource determination unit 313 may calculate a necessary resource amount based on the size (area) of the inundation prediction range.

  In the first embodiment, the inundation prediction request verification unit 403 of the control device 50 causes the data processing server 40 itself to verify the validity of the inundation prediction request. However, the control device 50 itself may receive the earthquake early warning and verify the validity of the inundation prediction request. That is, the inundation prediction request verification unit 403 matches at least a part of information included in the inundation prediction request acquired from the data processing server 40 with at least a part of information included in the emergency earthquake warning (earthquake information). In some cases (for example, when the date and time of occurrence of earthquakes coincide), it may be determined that the inundation prediction request is valid.

  Alternatively, when the data processing server 40 stores the earthquake early warning log in an external database server, the control device 50 acquires information on the emergency earthquake early warning from the data server and verifies the validity of the inundation prediction request. May be. That is, the verification regarding the validity of the flood prediction request by the control device 50 is not limited to inquiring the data processing server 40.

  In the first embodiment, the control device 50 sets the priority of the tsunami inundation prediction simulation in the script file. However, the tsunami inundation prediction simulation has the highest priority between the control device 50 and the parallel computer system 60. If it is determined as a job, the priority setting is not necessary.

  In the first embodiment, the data processing server 40 makes a request for “tsunami inundation prediction” to the parallel computer system 60, but the data processing server 40 sends a “tsunami” to the parallel computer system 60. A request for “damage prediction” may be made. In this case, the parallel computer system 60 can predict an area where damage due to the tsunami is likely to be large by using the simulation result related to the tsunami inundation prediction and the population distribution and building information in the inundation prediction range. For example, it is possible to predict that an area where the flood height is high and the population density is high will be damaged by a tsunami. In this case, since the amount of computation of the parallel computer system 60 increases, the resource determination unit 313 of the data processing server 40 takes into account the increase in the amount of computation of the parallel computer system 60, and the computation secured by the parallel computer system 60 It is desirable to determine the number of nodes 62.

  In 1st Embodiment, the number of the transfer servers 80 used as the transmission destination of the real-time tsunami inundation prediction from the control apparatus 50 is restrict | limited. However, for example, if the transfer server 80 and the control device 50 are connected by a dedicated line and the network congestion is not a problem, the control device 50 sends a simulation result to all the transfer servers 80. May be sent. In this case, each transfer server 80 may transfer the real-time tsunami inundation prediction toward the local government terminal 10 for which connection is ensured. Alternatively, adjustment (negotiation) regarding the transfer destination of the real-time tsunami inundation prediction may be performed between the transfer servers 80 to suppress the data amount between the transfer server 80 and the local government terminal 10.

  The function sharing of the data processing server 40, the control device 50, the parallel computer system 60, and the transfer server 80 described in the first embodiment is an example, and is not intended to limit the contents.

  Moreover, in each flowchart used by the above-mentioned description, although several step (process, process) is described in order, the execution order of the step performed is not restrict | limited to the description order. For example, the order of the illustrated steps can be changed within a range that does not hinder the contents, such as executing each process in parallel.

A part or all of the above embodiments can be described as, for example, the following supplementary notes, but is not limited thereto.
[Appendix 1]
A control device according to a second aspect,
The control apparatus which requests | requires provision of the information regarding the connection state with the said predetermined transmission destination with respect to the said transfer server, before transmitting the result of the said tsunami inundation prediction to the said transfer server.
[Appendix 2]
When each of the plurality of data processing servers is requested to execute the tsunami inundation prediction with the same contents, the tsunami inundation prediction received earliest among the execution requests for the plurality of tsunami inundation predictions is validated. The control apparatus of appendix 1 which cancels the request | requirement of tsunami inundation prediction.

  Each disclosure of the cited patent documents and the like cited above is incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiments and examples can be changed and adjusted based on the basic technical concept. In addition, various combinations or selections of various disclosed elements (including each element in each claim, each element in each embodiment or example, each element in each drawing, etc.) within the scope of the entire disclosure of the present invention. Is possible. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea. In particular, with respect to the numerical ranges described in this document, any numerical value or small range included in the range should be construed as being specifically described even if there is no specific description.

2, 2-1 to 2-n, 100 Management center 10, 10-1 to 10-5 Local government terminal 20 Japan Meteorological Agency computer 30 Laboratory computer 40, 40-1 to 40-m, 101 Data processing server 50 Control device 60 Parallel Computer system 61 Job management node 62, 62-1 to 62-i Calculation node 70 Database (DB) server 80, 80-1 to 80-k, 102 Transfer server 111 Acquisition unit 112 Verification unit 113 Instruction unit 201 205 Inundation prediction range 211 to 213 Simulation target range 221 to 224 Epicenter 301, 601, 701 Communication control unit 302 Inundation prediction request unit 303 Verification request processing unit 304, 406 Storage unit 311 Request necessity determination unit 312 Request destination management unit 313 Resource determination unit 314 Request destination determination unit 315 Inundation prediction request transmission unit 401 First communication Control unit 402 Second communication control unit 403 Inundation prediction request verification unit 404 Simulation instruction unit 405 Simulation result management unit 501 Computing device 502 Memory device 503 Storage device 602 Job queue management unit 603 Job control unit 611 Job queue 612 Emergency job queue 702 Local government Terminal management unit 703 Result transfer unit

Claims (7)

A plurality of management centers each having a parallel computer system that executes jobs in parallel by a plurality of computing nodes; and a control device that controls the parallel computer system;
A plurality of data processing servers that request execution of tsunami inundation prediction to at least one management center among the plurality of management centers according to the earthquake information generated with the occurrence of the earthquake,
A plurality of transfer servers that transfer the result of the tsunami inundation prediction by the management center to a predetermined destination; and
Including
The control device included in the management center requested to execute the tsunami inundation prediction causes the parallel computer system to execute a job related to the tsunami inundation prediction,
A tsunami inundation prediction system that transmits a result of the tsunami inundation prediction to a transfer server that is secured to the predetermined transmission destination among the plurality of transfer servers.   2. The tsunami inundation according to claim 1, wherein the control device requests the transfer server to provide information related to a connection state with the predetermined transmission destination before transmitting the result of the tsunami inundation prediction to the transfer server. Prediction system.   When the control device is requested by each of the plurality of data processing servers to execute the tsunami inundation prediction having the same contents, the control device receives the earliest tsunami inundation prediction among the plurality of tsunami inundation prediction execution requests. The tsunami inundation prediction system according to claim 1 or 2, wherein the tsunami inundation prediction request is discarded.   The tsunami inundation prediction system according to any one of claims 1 to 3, wherein the data processing server determines a request destination of execution related to the tsunami inundation prediction based on an earthquake influence level in the management center. A control device for controlling a parallel computer system that executes jobs in parallel by a plurality of computing nodes,
In response to the earthquake information generated with the occurrence of the earthquake, accepting execution requests for tsunami inundation prediction,
Based on the execution request for the tsunami inundation prediction, the parallel computer system executes a job related to the tsunami inundation prediction,
The control apparatus which transmits the result of the said tsunami inundation prediction to the transfer server with which the connection with the predetermined transmission destination is ensured among several transfer servers. A method of controlling a parallel computer system that executes jobs in parallel by a plurality of computing nodes,
A step of accepting an execution request for tsunami inundation prediction according to the earthquake information generated with the occurrence of the earthquake;
Based on the execution request for the tsunami inundation prediction, causing the parallel computer system to execute a job related to the tsunami inundation prediction;
Transmitting the result of the tsunami inundation prediction to a transfer server that is secured to a predetermined destination among a plurality of transfer servers;
A control method for a parallel computer system. A program to be executed by a computer mounted on a control device controlled by a parallel computer system that executes jobs in parallel by a plurality of calculation nodes,
A process for receiving an execution request for tsunami inundation prediction according to the earthquake information generated with the occurrence of the earthquake,
Based on the execution request for the tsunami inundation prediction, a process for causing the parallel computer system to execute a job related to the tsunami inundation prediction;
A process of transmitting the result of the tsunami inundation prediction to a transfer server that is secured to a predetermined transmission destination among a plurality of transfer servers;
A program that executes

Images