JP2003006177A - Distributed shared memory monitoring device, distributed shared memory network tracking device and distributed shared memory network setting supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distributed shared memory monitoring device, a distributed shared memory network tracking device and a distributed shared memory network which sets a support device for efficiently supporting debugging of an application system, a trouble analysis or the like in constructing the application system. SOLUTION: This distributed shared memory monitoring device has a memory reading part for reading the value of a designated address or area of a distributed shared memory at each distributed node in a prescribed period, and a display control part for displaying the value read by the memory read part on a display device in the prescribed period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed shared memory monitoring device, a distributed shared memory network tracking device, and a distributed shared memory monitoring device which are effective when applied to a distributed processing system using a distributed shared memory system which requires real-time property and fault tolerance. The present invention relates to a distributed shared memory network setting support device.

[0002]

2. Description of the Related Art FIG. 16 shows, for example, JP-A-3-19460.
It is a block diagram which shows the conventional cooperative distributed processing system shown by the 1st publication. In the figure, 1a to 1e are control devices as distributed nodes, and 2 is these control devices 1a to 1e.
It is a plant to be controlled by 1e. An input / output unit 3 includes a detector that acquires process information of the plant 2 and an operation unit that operates the plant 2 according to control information. Reference numeral 4 is a transmission path for the input / output unit 3 to exchange arbitrary process information, and 5 is each of the control devices 1a-1.
It is a transmission path for performing local communication between e.

Next, the operation will be described. Control device 1a
1 to 1e periodically execute a plurality of plant control tasks and control the plant 2 via the input / output unit 3. Further, each of the control devices 1a to 1e periodically communicates with each other using the transmission path 5, and the adjacent control devices perform state monitoring. If a time-out is detected in this status monitoring communication, the control device (for example, the control device 1c) of the communication source that has timed out is determined to be in failure, and the adjacent healthy control devices 1b and 1d execute the failed control device 1c. Distributed backup of tasks according to the load balancing method. As a result, the load of the control devices 1b and 1d adjacent to the failed control device 1c increases, so that in the next cycle, the distributed backup of the tasks according to the load distribution method in the control devices 1a and 1e further adjacent to them. I do. In other words, for a failure, the task is shared by the adjacent node first, but the task is gradually spread to nodes further away,
Eventually, the entire system keeps executing the tasks of the failed node in a load-balanced state. Such a system is called a cooperative distributed processing system.

FIG. 17 shows, for example, Japanese Patent Laid-Open No. 6-680.
It is a block diagram for demonstrating the storage method of the distributed shared memory in such a conventional distributed processing system shown by the 47 publication. In the figure, 6a to 6d are nodes such as computers and terminal devices, 7 is a network to which these nodes 6a to 6d are respectively connected to constitute a distributed processing system, and 8a to 8e are circulating in the network 7. It is a data unit to be used.

Next, the operation will be described. Memory information composed of a set of addressed data is made to circulate among the nodes 6a to 6d in a desired order as data units 8a to 8e corresponding to the addresses. In FIG. 17, the data unit sent from the node 6a to the node 6b is 8a,
The data unit sent from the node 6b is 8b, and the node 6 is
The data unit received by c is 8c, the data unit sent from the node 6c to the node 6d is 8d, and the data unit sent from the node 6d to the node 6a is 8e. On the side of each of the nodes 6a to 6d, based on the memory access request from the node 6a, the data unit that matches the request is identified from the data units 8a to 8e circulating in the network 7, and the corresponding data unit is read in the read request. Is transferred to the node of the access request source, and in the write request, the content of the corresponding data unit is rewritten and relayed. Thus, the storage method of the distributed shared memory type system using the network, which can shorten the access time to the distributed shared memory from each of the nodes 6a to 6d, is provided.

Here, the distributed shared memory type system is a system in which the extended memory of each node is connected to the network, and each node holds duplicate information of the distributed shared memory network. Therefore, it is possible to construct a distributed processing system having excellent distributed transparency and fault tolerance. Also, since the value update of the distributed shared memory is transferred to other nodes almost instantly, the speed of distributed processing is increased,
There is an advantage that it is easy to secure real-time responsiveness.

Regarding the shared distributed memory of this type, SCRAMNet of the US company SYSRAN, V of the US
MIC's reflective memory etc. have already been released as products. Such a distributed shared memory card or board can be used for distributed shared memory network settings and CP.
Setting functions such as physical address setting for U can be performed by setting switches, jumper wires, and registers. For example, the SCRAMNet described above can perform network arbitration setting and interrupt notification setting by a control register accessible from the CPU. You can do it.

[0008]

Since the conventional cooperative distributed processing system is configured as described above, mutual monitoring is performed only locally, and each node can see the status of the entire system. There wasn't. Also, because the shared processing data and the takeover data are communicated periodically one by one,
There was a problem that the processing was heavy. In order to solve these problems, it is possible to introduce a data sharing method using a distributed shared memory network so that the shared data and the monitoring data can be effectively accessed and managed. However, the conventional distributed system using the distributed shared memory lacks the system management and data management functions necessary for constructing the cooperative distributed processing system.

Further, since the conventional distributed shared memory type system only provides basic functions as a distributed shared memory such as data management, when an actual application system is constructed, system debugging, trouble analysis, or There were problems such as lack of means for detecting a failure and a great deal of time and effort required for system construction.

The present invention has been made in order to solve the above problems, and in a distributed processing system using a distributed shared memory, it is possible to perform debugging, trouble analysis, etc. of the application system when building the application system. An object of the present invention is to provide a distributed shared memory monitoring device, a distributed shared memory network tracking device, and a distributed shared memory network setting support device for supporting efficiently.

[0011]

A distributed shared memory monitoring apparatus according to the present invention provides a memory reading unit for periodically reading the value of a predetermined area of the distributed shared memory, and a value read by the memory reading unit. The display device is provided with a display control unit for periodically displaying.

In the distributed shared memory monitoring apparatus according to the present invention, the difference display control for calculating the difference between the value read by the memory reading section in the previous cycle and the value read in the current cycle and passing it to the display control section. It also has a section.

A distributed shared memory network tracking device according to the present invention is a packet acquisition unit for acquiring packet contents on a distributed shared memory network detected by a packet reception detection unit for each reception, and a display device for displaying the packet contents in the order of reception. Is provided with a display control unit.

The distributed shared memory network tracking device according to the present invention is also provided with a packet related information reading section for passing information not included in the packet related to the memory update to the display control section.

The distributed shared memory network tracking device according to the present invention also includes a parameter setting unit that acquires the packet condition specified by the user and passes it to the packet acquisition unit and the display control unit.

In the distributed shared memory network setting support device according to the present invention, if the parameter designated by the user is the control function setting of the distributed shared memory network setting register, setting information is created and set in the setting register, and the setting is referred to. In this case, the distributed shared memory network setting register reference setting unit for reading the setting information from the distributed shared memory network setting register and passing it to the display control unit that controls the display of the display device is provided.

The distributed shared memory network setting support device according to the present invention is provided with a timer so that the display control unit is activated at a constant time cycle.

The distributed shared memory network setting support device according to the present invention calculates the difference between the value read by the distributed shared memory network setting register reference setting unit in the previous cycle and the value read in the current cycle. Also, a difference display control unit that controls the display of the display device based on it is also provided.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. Embodiment 1. 1 is a block diagram showing a distributed shared memory monitoring device according to a first embodiment of the present invention. In the figure, 10 is a distributed node, 11 is a CPU, 12 is a main memory, 13 is a distributed shared memory, and 20 is a distributed shared memory network. 40 is the CPU of the distributed node 10.
Reference numeral 41 is a display device such as a display or printer connected to 11, and 41 is a partial area (specified address or area) of the distributed shared memory 13 in which the value displayed on the display device 40 is stored. Further, in the CPU 11, 42 is a parameter processing unit for processing user parameters, 43 is a timer for setting a display cycle on the display device 40, 44 is periodically activated by the timer 43, and distributed shared memory 13, a data processing unit as a memory reading unit that reads out the value of the specified address or area, that is, the value of the partial area 41, 45 indicates the value read by the data processing section 44 from the partial area 41 of the distributed shared memory 13. It is a display control unit for displaying.

Next, the operation will be described. Also in this case,
The distributed shared memories 13 of a plurality of distributed nodes 10 are directly connected to the distributed shared memory network 20, and each distributed node 10 operates independently. In FIG. 1, the plurality of distributed nodes 10 are replaced by one distributed node 10
It is shown as a representative. Here, the distributed shared memory 13
The contents of the
Its value changes independently of the operation of U11. Therefore, it is necessary to dynamically monitor the state of the distributed shared memory 13 by means independent of the application of the own node. In the first embodiment, in order for the system builder (user) to dynamically monitor the contents of the distributed shared memory 13, the value of the address or area of the specified distributed shared memory 13 is displayed on the display device 4.
It is displayed at a specified cycle of 0. The processing procedure for displaying the contents of the partial area 41 of the distributed shared memory 13 will be described below with reference to the flowchart shown in FIG.

When the processing is started, the parameter processing unit 4
In step ST11, 2 acquires the address of the partial area 41 to be displayed in the distributed shared memory 13 and the display cycle of the operation parameter designated by the user. The acquired address is given to the data processing unit 44, and the display cycle is set in the timer 43. Next, step ST1
In 2, the data processing unit 44 is activated to access the partial area 41 of the distributed shared memory 13 based on the specified address, read the stored value, and pass it to the display control unit 45 together with the address. Next, in step ST13, the display control unit 45 displays the received address of the partial area 41 and its value on the display device 40 such as a display or a printer.

Next, in step ST14, it is determined whether or not the processing of displaying the contents is completed. As a result, if the processing is not completed, the process proceeds to step ST15 to set the timer 43, and at step ST16, the timer wait state is entered. When the timer 43 times out, the process returns to step ST12, the data processing unit 44 is activated again, and the series of processes described above is repeated until it is detected in step ST14 that the process of displaying the contents is completed. As a result, the value of the predetermined partial area 41 of the distributed shared memory 13 is periodically displayed on the display device 40 in accordance with the display cycle designated by the user.

FIG. 3 is an explanatory view showing a display example of the display device 40 which is displayed in this way. The 16-byte content of the partial area 41 of the distributed shared memory 13 is 16 in each row.
The 16-byte first address is displayed at the beginning of each line. One or more such lines are displayed at once. Any number of bytes can be displayed in one line, and the display method can be selected from bit string, quaternary, octal, ASCII display and the like. Further, the head address does not always have to be displayed.

Thus, the specified distributed shared memory 1
Since the value of the address 3 or the value of the area (partial area 41) is displayed on the display device 40 at a specified cycle, the user can dynamically monitor the value change of the distributed shared memory 13 by the application of the own node or another node. Is possible.

Embodiment 2. 4 is a block diagram showing a distributed shared memory monitoring device according to a second embodiment of the present invention. Corresponding parts are designated by the same reference numerals as those in FIG. 1 and their explanations are omitted. In the figure, 46 is a difference display control unit for supporting the difference display in the display control unit 45, and 47
Is a buffer for storing the value of the partial area 41 in the previous cycle. In the second embodiment, the difference display control unit 46 is provided.
And Embodiment 1 in that the buffer 47 is provided.
Is different from.

Next, the operation will be described. The data processing unit 44 accesses the partial area 41 of the distributed shared memory 13 and sends the read value to the display control unit 45, and the display control unit 4
5 transfers it to the difference display control unit 46. Here, the buffer 47 stores the value of the partial area 41 read in the previous cycle, and the difference display control unit 46 stores the value sent from the display control unit 45 in the buffer 47. The value of the previous cycle is compared and the difference is returned to the display control unit 45. The display control unit 45 controls the display device 40 so as to change the display of only this difference. Therefore, the display is changed only in the partial region 41 of the distributed shared memory 13 in which the value is changed from the previous period. In this way, by printing or changing only the changed part, the screen can be updated at high speed and the flicker is eliminated, making it easier for the user to read. Also, by performing reverse display or highlighted display, only the changed part can be easily understood. You can also

Embodiment 3. FIG. 5 is a block diagram showing a distributed shared memory network tracking device according to a third embodiment of the present invention. Corresponding parts are designated by the same reference numerals as in FIG. 1 and their explanations are omitted. In the figure, 48 is a distributed shared memory update packet (packet) flowing through the distributed shared memory network 20, and 49 is a specific area on the distributed shared memory 13 in which the distributed shared memory update packet 48 is stored. Reference numeral 50 is a packet reception detection unit that detects reception of the distributed shared memory update packet 48, and 51 is a packet acquisition unit that reads the distributed shared memory update packet 48 from the specific area 49 on the distributed shared memory 13 and acquires the packet contents. There is a display control unit 52 for displaying the content of the read distributed shared memory update packet 48 on the display device 40.

Next, the operation will be described. Also in this case,
The distributed shared memories 13 of a plurality of distributed nodes 10 are directly connected to the distributed shared memory network 20, and each distributed node operates independently. Here, in the distributed processing system using the distributed shared memory 13, even if each distributed node 10 operates as designed, depending on the memory writing order of each distributed node 10 operating in parallel, the entire system may operate as designed. There are times when you don't. For such trouble analysis, in the third embodiment, the distributed shared memory update packet 48 of the distributed shared memory network 20 is detected for each reception, and the contents of the received packet are displayed on the display device 40 in the order of reception. . Hereinafter, the processing procedure for displaying the content of the received distributed shared memory update packet 48 will be described with reference to the flowchart shown in FIG.

First, the distributed shared memory update packet 48 flowing through the distributed shared memory network 20 is sent to the distributed node 1
It is read to the distributed shared memory 13 of 0 and stored in the specific area 49 on the distributed shared memory 13. As a result, the memory value changing process of the distributed shared memory 13 is performed.
The packet reception detection unit 50, in step ST21,
Whether or not the distributed shared memory update packet 48 is received is monitored. When the packet reception detection unit 50 detects the reception of the distributed shared memory update packet 48, the packet acquisition unit 51 proceeds to step ST22 and the distributed shared memory update packet 48 stored in the specific area 49 on the distributed shared memory 13 is detected. Is read and the packet information is passed to the display control unit 52 to wait for the next packet reception. In addition,
This packet information includes the value and address of the distributed shared memory 13. Next, the display control unit 52 performs step ST2.
3, a display device 4 such as a display or a printer
The content of the distributed shared memory update packet 48 is displayed at 0. This series of processes is repeated until the end of the process is detected in step ST24.

FIG. 7 is an explanatory view showing a display example of the display device 40 which is displayed in this way. The memory update address and the update value are displayed in one line in each line. Although depending on the packet control information, the packet transmission source node number, the packet checksum, etc. can be displayed as supplementary information, or the user can specify not to display them. In the illustrated example, the packet transmission source node number is also displayed as this additional information. Also, the display method can be selected from bit strings, quaternary, octal, hexadecimal and the like. The packet control information is information indicating priority, interrupt information, and the like.

In this way, the distributed shared memory update packet 48 of the distributed shared memory network 20 is detected each time it is received, and its contents are displayed on the display device 40 in the order of reception. The distributed shared memory update order can be traced, and the user can confirm the correctness of the parallel access operation of the distributed shared memory 13.

Fourth Embodiment FIG. 8 is a block diagram showing a distributed shared memory network tracking device according to Embodiment 4 of the present invention. Corresponding parts are designated by the same reference numerals as in FIG. 5 and their explanations are omitted. In the figure, 53 is the main memory 1
2 is an update time, 54 is an area in the distributed shared memory 13 in which the value before the memory update is stored, 55 is a packet such as the value before the memory update stored in the update time 53 and the area 54 Packet-related information that is not included in the above, but is related to the memory update, adds it to the information read by the packet acquisition unit 51, and adds it to the display control unit 52.
It is a packet related information reading unit to be passed to the.

Next, the operation will be described. The packet related information reading unit 55 uses the distributed shared memory update packet 48.
However, the packet acquisition unit 51 acquires information related to the memory update, such as the value before the memory update stored in the area 54 of the distributed shared memory 13 or the update time 53, which is not included in the distributed shared memory. The information is sent to the display control unit 52 together with the information of the distributed shared memory update packet 48 read from the specific area 49 on 13. The display control unit 52 displays information related to the memory update on the display device 40 in addition to the information of the distributed shared memory update packet 48. Thus, by displaying the information related to the memory update in addition to the information of the distributed shared memory update packet 48,
In the distributed shared memory network 20, when a plurality of distributed nodes 10 are writing data to a specific area on the distributed shared memory 13, if there is a place where the memory update time does not change, the distributed node 10 fails. It is possible to detect a failure, such as determining that there is a failure.

Embodiment 5. FIG. 9 is a block diagram showing a distributed shared memory network tracking device according to a fifth embodiment of the present invention. Corresponding parts are designated by the same reference numerals as those in FIG. 5 and their explanations are omitted. In the figure, reference numeral 56 is a parameter setting unit that acquires a packet condition designated by the user and passes it to the packet acquisition unit 51 and the display control unit 52. The packet acquisition unit 51 and the display control unit 52 acquire the parameter setting unit 56. It differs from those shown in FIG. 5 in that it operates according to the above conditions.

Next, the operation will be described. The parameter setting unit 56 acquires a packet condition designated by the user, such as an update packet of a specific address or a packet from a specific node, and passes the parameter value to the packet acquisition unit 51 and the display control unit 52. . The packet acquisition unit 51 reads the distributed shared memory update packet 48 according to the packet condition based on the received parameter value, and sends the packet information to the display control unit 52. The display control unit 52 controls the display of the packet information from the packet acquisition unit 51 on the display device 40 according to the packet condition based on the received parameter value. In this way, by reading the distributed shared memory update packet 48 and controlling the display of the display device 40 in accordance with the packet conditions, in the distributed shared memory network 20, a plurality of distributed nodes 10 can execute specific areas on the distributed shared memory 13. It becomes possible to know the memory update order of a specific distributed node when writing data to.

Sixth Embodiment FIG. 10 is a block diagram showing a distributed shared memory network setting support device according to a sixth embodiment of the present invention. Corresponding parts are designated by the same reference numerals as those in FIG. 1 and their explanations are omitted. In the figure, 57 is CP
A distributed shared memory network 20 arranged in U11
Is a distributed shared memory network setting register in which setting information of the control function of
Is a distributed shared memory network setting register profiler in which the meaning of each bit of the distributed shared memory network setting register 57 and the mutual relation of bits are described. Reference numeral 59 denotes a distributed shared memory network hardware control unit including the distributed shared memory network setting register 57 and the distributed shared memory network setting register profiler 58. Also, 6
Reference numeral 0 denotes a control function setting and setting reference parameter designated by the user, and while referring to the distributed shared memory network setting register profiler 58, the control function setting and setting reference of the distributed shared memory network setting register 57 according to the obtained parameter It is a distributed shared memory network setting register reference setting unit that performs the processing of.
Reference numeral 61 denotes a display control unit for displaying on the display device 40 the information sent from the distributed shared memory network setting register reference setting unit 60 at the time of setting reference.

Next, the operation will be described. Also in this case,
The distributed shared memories 13 of a plurality of distributed nodes 10 are directly connected to the distributed shared memory network 20, and each distributed node operates independently. Here, the distributed shared memory card or the distributed shared memory board can perform setting functions such as setting of the distributed shared memory network 20 and setting of a physical address for the CPU 11 by using switches, jumper wires, or registers. For example, SCRAMNet can perform network arbitration setting and interrupt notification setting by a control status register (hereinafter referred to as CSR) accessible from the CPU. This Embodiment 6
Provides a function of the setting function that can be set from the CPU 11, that is, a function that can be set by software, so that the user can easily refer to or set the setting state.

Within the CPU 11, there is a distributed shared memory network setting register 57 in which setting information of the control function of the distributed shared memory network 20 is set. By referring to and setting the distributed shared memory network setting register 57, the distributed shared memory 13 and It is possible to set the control function of the distributed shared memory network 20. For example,
In SCRAMNet, the distributed shared memory 13 and the distributed shared memory network 20 are implemented by CSR. More specifically, there are protocol selection and data filtering functions. It should be noted that this data filter function means that when a certain data is written in a specific area on the distributed shared memory 13, if the data is the same as the data written before that, the other distributed node 10 This is a function in which packets are not sent to.

The processing procedure for referring to and setting the setting information of the control function of the distributed shared memory network 20 will be described below with reference to the flowchart shown in FIG. First,
Distributed shared memory network setting register reference setting unit 6
0 acquires a parameter for setting reference and control function setting designated by the user and passes it to the display control unit 61, and in step ST31, it identifies whether the acquired parameter is setting reference or control function setting. As a result, if the parameter instructed by the user is the setting reference, the process proceeds to step ST32, and the distributed shared memory network setting register reference setting unit 60 follows the distributed shared memory network according to the user-specified parameter (eg register number). The register value is read from the setting register 57. At that time, the distributed shared memory network setting register profiler 58, which describes the meaning of each bit of the distributed shared memory network setting register 57 and the relationship between the bits, is referred to, the comment and definition of the setting state are acquired, and the shared sharing is performed. It is passed to the display control unit 61 together with the value obtained from the memory network setting register reference setting unit 60. Next, in step ST33, the display controller 61
Displays the register value received from the distributed shared memory network setting register reference setting unit 60 on the display device 40 such as a display or printer together with the comment and definition of the setting state.

On the other hand, when the identification result in step ST31 is the setting, the process proceeds to step ST34, and the distributed shared memory network setting register reference setting unit 60 refers to the distributed shared memory network setting register profiler 58 to refer to the distributed shared memory. It is checked where and what value is set in the network setting register 57, and the user parameter is converted into the setting register and its value to create setting information. Next, in step ST35, the distributed shared memory network setting register reference setting unit 60 sets the control function in the distributed shared memory network setting register 57 based on the created setting information. If there is an instruction from the user, the distributed shared memory network setting register reference setting unit 60 reads the result set in the distributed shared memory network setting register 57, and the display control unit 61 controls the distributed shared memory network setting register profiler. Display device 40 with reference to 58
To display.

FIG. 12 is an explanatory view showing an example of the display of the display device 40 thus displayed. The setting function items and the current settings are displayed on each line. The display item can be selected by the user's instruction. Further, another display example is shown in FIG. In this case, all register information is displayed regardless of the set function item. The display format is
The user can specify a bit string, hex, octal, hexadecimal or the like.

As described above, the setting information of the control function of the distributed shared memory network 20 set in the distributed shared memory network setting register 57 is read according to the instruction of the user, converted and displayed in a format easily understood by the user, and By setting the control function in the distributed shared memory network setting register 57 according to the instruction, the user can easily confirm the setting state and set the setting function of the distributed shared memory network 20 that can be set by software. A distributed shared memory network setting support device that can be realized can be realized.

Embodiment 7. 14 is a block diagram showing a distributed shared memory network setting support device according to a seventh embodiment of the present invention. Corresponding parts are designated by the same reference numerals as those in FIG. 10 and their explanations are omitted. In the figure, reference numeral 62 is a timer for setting a display cycle when the display controller 61 periodically displays the control device 40. In the seventh embodiment, except for the register setting function of the sixth embodiment, only the reference function is left and the timer 62 is used.
Is added.

Next, the operation will be described. The distributed shared memory network setting register reference setting unit 60 sets, in the timer 62, an activation period for periodically activating the display control unit 61. The display control unit 61 is activated according to the cycle set by the timer 62, and each time the display control unit 61 displays information such as the register value passed from the distributed shared memory network setting register reference setting unit 60 on the display device 40. In this way, the timer 62 periodically causes the display controller 6 to
Since 1 is activated, the register setting status is periodically displayed. When the information is changed according to the user instruction parameter, the information is passed to the display control unit 61 each time the information is changed.

Embodiment 8. FIG. 15 is a block diagram showing a distributed shared memory network setting support device according to an eighth embodiment of the present invention. Corresponding parts are designated by the same reference numerals as in FIG. 14 and their explanations are omitted. In the figure, 63 is a difference display control unit for controlling the difference display in the display device 40, and 64 is a buffer for storing the value of the previous cycle. In the eighth embodiment, the display control unit 61 of the seventh embodiment is replaced with the difference display control unit 63 and the buffer 64.

Next, the operation will be described. Embodiment 7
In the cycle display described above, the difference display control unit 63 stores the value in the previous cycle in the buffer 64, and at the time of display, the value of the previous cycle and the value of the current cycle stored in the buffer 64. Is calculated, and only the changed amount is passed to the display control device 61 to be displayed on the display device 40. As described above, only the changed register setting state can be displayed by the changed amount with the value of the previous cycle calculated by the difference display control unit 63, and high-speed and flicker-free screen display can be performed. Further, by displaying and highlighting only the change information according to the change from the difference display control unit 63, a display that is easier to read can be performed.

[0047]

As described above, according to the present invention, the address or area of the distributed shared memory is designated, and the value of the address or area is periodically read and displayed on the display device. , It is possible to display the contents of the distributed shared memory that changes every moment, and the system builder (user) dynamically monitors the change of the value of the distributed shared memory by the application of its own node or other nodes. There is an effect that a distributed shared memory monitoring device capable of being obtained is obtained.

According to the present invention, the memory reading unit is configured to pass the difference between the value read in the previous cycle and the value read in the current cycle to the display control unit to control the display of the display device. Therefore, it is possible to change the display only for those that have changed in the previous period and the value, so that there is an effect that printing and screen updating can be performed at high speed.

According to the present invention, the reception of the packet on the distributed shared memory network is detected and the contents of the received packet are displayed on the display device in the order of reception. This makes it possible to trace the update order of the distributed shared memory and to obtain a distributed shared memory network tracking device that can easily confirm the correctness of the parallel access operation of the distributed shared memory.

According to the present invention, the information related to the memory update, which is not included in the packet, is also displayed on the display device together with the packet contents read by the packet acquisition unit. When a distributed node is writing data to a specific area on the distributed shared memory, if there is no change in the memory update time, it is possible to detect that a failure has occurred in the corresponding distributed node. .

According to the present invention, the packet condition designated by the user is acquired, and the reading and display control of the packet are performed according to the packet condition. Therefore, a plurality of distributed nodes in the distributed shared memory network can operate. When writing to a specific area on the distributed shared memory, there is an effect that the user can know the memory update order of a specific distributed node.

According to the present invention, if the parameter designated by the user is the control function setting, setting information is created and set in the distributed shared memory network setting register, and if the setting reference is read from the distributed shared memory network setting register. Since the configuration information is displayed on the display device, it is possible to obtain a distributed shared memory network setting support device that allows the user to easily perform various settings of the distributed shared memory network and refer to the setting information. is there.

According to the present invention, since the display control unit is configured to be activated at a predetermined cycle by the timer, it becomes possible to periodically display the setting information set in the distributed shared memory network setting register. There is an effect that a distributed shared memory network setting support device that is easier to use can be obtained.

According to the present invention, the distributed shared memory network setting register reference setting unit controls the display of the display device according to the difference between the value read in the previous cycle and the value read in the current cycle. It is possible to change the display only for those that have a change in the cycle and the value, and it is possible to perform printing and screen updating at high speed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a distributed shared memory monitoring device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of processing in the above embodiment.

FIG. 3 is an explanatory diagram showing a display example in the above embodiment.

FIG. 4 is a block diagram showing a distributed shared memory monitoring device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a distributed shared memory network tracking device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing a flow of processing in the above embodiment.

FIG. 7 is an explanatory diagram showing a display example in the above embodiment.

FIG. 8 is a block diagram showing a distributed shared memory network tracking device according to a fourth embodiment of the present invention.

FIG. 9 is a block diagram showing a distributed shared memory network tracking device according to a fifth embodiment of the present invention.

FIG. 10 is a block diagram showing a distributed shared memory network setting support device according to a sixth embodiment of the present invention.

FIG. 11 is a flowchart showing the flow of processing in the above embodiment.

FIG. 12 is an explanatory diagram showing a display example in the above embodiment.

FIG. 13 is an explanatory diagram showing another display example according to the above embodiment.

FIG. 14 is a block diagram showing a distributed shared memory network setting support device according to a seventh embodiment of the present invention.

FIG. 15 is a block diagram showing a distributed shared memory network setting support device according to an eighth embodiment of the present invention.

FIG. 16 is a block diagram showing a conventional cooperative distributed processing system.

FIG. 17 is a block diagram showing a storage method of a shared distributed memory in a conventional distributed processing system.

[Explanation of symbols]

10 distributed node, 40 display device, 41 partial area (specified address or area), 44 data processing section (memory reading section), 45, 52, 61 display control section, 46, 63 difference display control section, 48 distributed sharing Memory update packet (packet), 50 packet reception detection unit, 51 packet acquisition unit, 55 packet related information reading unit, 56 parameter setting unit, 57 distributed shared memory network setting register, 60 distributed shared memory network setting register reference setting unit, 62 timer.

Continued front page    F-term (reference) 5B042 GA11 GC08 GC10 JJ41 MC07                       MC09                 5B045 DD01 JJ02 JJ49

Claims (8)

[Claims] 1. A distributed shared memory of a plurality of distributed nodes is connected by a distributed shared memory network, and the content change of each distributed shared memory is communicated to the distributed shared memory of another distributed node independently of the operation of the distributed node. In a distributed shared memory monitoring device of a distributed processing system in which a memory content is reflected, a memory reading unit that reads out a value of a specified address or area of the distributed shared memory at each distributed node at a predetermined cycle, and the memory. A distributed shared memory monitoring device, comprising: a display control unit that displays the value read by the reading unit on the display device at the predetermined cycle. 2. A difference between the value read in the previous cycle and the value read in the current cycle is calculated by the memory reading unit,
The distributed shared memory monitoring device according to claim 1, further comprising a difference display control unit that transfers it to the display control unit. 3. The distributed shared memories of a plurality of distributed nodes are connected by a distributed shared memory network, and the content change of each distributed shared memory is communicated to the distributed shared memory of another distributed node independently of the operation of the distributed node. In a distributed shared memory network tracing device of a distributed processing system in which memory contents are reflected, a packet reception detection unit that detects a packet on the distributed shared memory network at each distributed node for each reception, and the packet reception detection unit Received by
A distributed shared memory network tracking device, comprising: a packet acquisition unit that acquires the detected packet content; and a display control unit that displays the information acquired by the packet acquisition unit on a display device in the order of reception. 4. A packet-related information reading unit is provided, which acquires information related to memory update, which is not included in the packet detected at each reception by the packet reception detection unit, and passes it to the display control unit. The distributed shared memory network tracking device according to claim 3. 5. A parameter setting unit for acquiring a packet condition designated by a user and passing the packet condition to a packet acquisition unit and a display control unit is provided.
A distributed shared memory network tracking device as described. 6. The distributed shared memory of a plurality of distributed nodes is connected by a distributed shared memory network, and the content change of each distributed shared memory is communicated to the distributed shared memory of another distributed node independently of the operation of the distributed node. In a distributed shared memory network setting support device of a distributed processing system in which the memory content is reflected, a distributed shared memory network setting register in which setting information of the control function of the distributed shared memory network is set, and a user instructed, If the control function setting of the distributed shared memory network setting register and the parameter for setting reference are acquired, if the acquired parameter is the control function setting, the setting information is created and set in the distributed shared memory network setting register. For example, the setting information from the distributed shared memory network setting register A distributed shared memory network setting register reference setting unit for reading information, and a display control unit for displaying on the display device the setting information read from the distributed shared memory network setting register by the distributed shared memory network setting register reference setting unit. A distributed shared memory network setting support device characterized by having. 7. The distributed shared memory network setting support device according to claim 6, further comprising a timer for activating the display control unit at a constant time cycle. 8. A difference display control for calculating a difference between a value read in a previous cycle and a value read in a current cycle by the distributed shared memory network setting register reference setting unit and controlling display on the display device according to the difference. 8. The distributed shared memory network setting support device according to claim 7, wherein a unit is provided.