JPH04209032A - Job execution computer system selection system - Google Patents

Abstract

PURPOSE:To execute a job by another computer system when a specific system is abnormal by automatically selecting the execution system according to system resources information, in-use peripheral device information, and desired execution system information at the time of a job analysis. CONSTITUTION:A job start part 9 when receiving a job registration report decides its kind. At the time of registering the job report, the load state of this computer system is obtained from an internal table. A proper job is selected and started and a job start report is sent to an execution managing part 21 when the load state of this computer system has a margin, a job attribute information managing table 12 contains jobs which can be executed by this computer system, and a job status 18 is included and registered in job attribute information 13. The contents of a multiple counter 1 is decreased by one during the execution of the job status 18 of the started job.

Description

[Detailed description of the invention]

[00011

TECHNICAL FIELD The present invention relates to a job execution computer system selection method, and more particularly to a job execution computer system selection method for automatically selecting a system capable of executing a job among a plurality of loosely coupled computer systems. [0002] In conventional loosely coupled systems, when a job is submitted, the desired execution system information (system number indicating the computer system on which the job is to be executed or system resource information) specified by the execution system information specification job control statement is used. Job attribute information, including information indicating that a job can be executed on any computer system if load balancing is desired for effective utilization, is stored on a secondary storage device that can be shared among multiple computer systems. . Then, by selecting and starting jobs that can be executed on each computer system based on this job attribute information, it is possible to control job execution among multiple computer systems and to effectively use system resources. It has a spooling sharing function. [0003] Furthermore, in conventional loosely coupled systems, the operating status and load status of each computer system are held on the secondary storage device, and the system resource information of each computer system is stored on the main storage device of each computer system. It is maintained on secondary storage. [0004] In the conventional method described above, the job starting section of each computing system selects and starts a job executable by its own computing system based only on desired execution system information included in job attribute information. Therefore, the submitted job is a job that uses a peripheral device that is not installed or cannot be used in the computer system, and the computer system set in the desired execution system information is used in the job. There is a drawback that if a peripheral device is not installed or is not available, an error will occur if the job is started on that computer system. [0005] In addition, if the submitted job uses a peripheral device that is not installed or cannot be used in a certain computer system, and the desired execution system information indicates that the job is subject to load balancing. Because it indicates that the job can be executed on any computer system, the peripheral device used in the job is not installed in a certain computer system that has been determined to be capable of executing the job on its own computer system, or The disadvantage is that if a job is started on a computer system that is not usable, an error will occur. [0006] In order to avoid the above-mentioned situation, after the user knows the configuration information and status of each peripheral device of each computer system that constitutes a loosely coupled computer system,
A drawback is that the execution system specification job control statement must specify the computer system in which the device is installed and available. [0007] Furthermore, if a certain computer system is not operating or has a heavy load, jobs set to be executed on that computer system may wait for a long time until the computer system's state recovers. The disadvantage is that it can be done. [0008]

[Object of the Invention] An object of the present invention is to prevent the occurrence of errors caused by executing a job on a computer system in which the peripheral device to be used is not installed or is in an unusable state, thereby reducing the burden on the user. It is an object of the present invention to provide an automatic job execution computer system selection method that can reduce the number of job execution jobs and automatically execute the job on another computer system when an abnormality occurs in a specific system. [0009]

According to the present invention, there is provided a job execution computer system selection method in a loosely coupled computer system configured such that a plurality of computer systems share a common secondary storage device, which a system status table for storing status and load status, a system resource information table for storing configuration system resource information of each of the computer systems, and used peripheral device information analysis means for analyzing peripheral devices used in this job when a job is executed. , desired execution system information analysis means for analyzing information on a desired execution system on which the job is desired to be executed when the job is executed; the peripheral device information used, the desired execution system information, system resource information and system status information of the own system; an execution system determination unit that determines an executable computer system based on the execution system information and obtains execution system information; and an information management unit that updates correspondence information in the table according to the execution system information; A job execution computer system selection method is obtained, which is characterized in that the job is executed according to the job execution. [00101

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [0011] FIG. 1 is a system block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram showing the overall configuration of a loosely coupled computer system. First, referring to FIG. 2, a plurality of computer systems m and n share a secondary storage device a to construct a loosely coupled computer system. [0012] The secondary storage device a has a system resource information table 11 that shows the configuration system resources of each computer system.
, a job attribute information management table 12 that manages job attribute information necessary for job execution, and a system status table 13 that stores the operating status and load status of each computer system. [0013] Note that m (natural number) indicates the system number of the own computer system, and n (natural number) indicates the system number of any other computer system. [0014] Referring to FIG. 1, the configuration of the own computer system is shown. The job description analysis section 1 analyzes the contents of the job description from the job input section 20, and includes a desired execution system information analysis section 2, a used peripheral device information analysis section 3, and another job description analysis section 4. [0015] The desired execution system information analysis unit 2 analyzes the execution system specification job control statement in the job description and determines the system number information of the computer system on which the job is desired to be executed. The used peripheral device analysis unit 3 analyzes the file definition statement and device allocation request statement in the job description to obtain used peripheral device information such as the device type of the peripheral device necessary for execution. Further, the other job description analysis section 4 analyzes job description contents other than those mentioned above. [0016] The execution system determining unit 5 determines a computer system capable of executing the job by referring to the desired execution system information 14 and the used peripheral device information 17 included in the job attribute information 13, as well as the information in the system resource table 11, etc. Then, executable system information 15 and execution system information 16 in job attribute information 13 are set. [0017] The system resource information management unit 6 sets and updates configuration information of peripheral devices of its own computer system in the system resource information area 10 and the system resource information table 11 in the main memory, respectively. [0018] The other system status monitoring unit 7 constantly monitors the usage status of other computer systems based on the information in the system status table 19, and notifies the job attribute information management unit 8 of the information. [0019] The job attribute information management unit 8 stores job attribute information including the execution system information 16, used peripheral device information 17, and desired execution system information 14 obtained by the execution system determination unit 5 on the secondary storage device. Register in the job attribute information table 12, send a job input notification to the job starting unit 9, and update/restore the execution system information included in the table 12 on the secondary storage device based on the notification from the other system status monitoring unit 7. It is something to do. [00201 The job starting unit 9 is the job attribute information management unit 8
Based on the job attribute information registered and managed on the secondary storage device by , a job that can be executed by the own computer system is selected and started. [0021] The execution management unit 21 receives job start notifications and job termination notifications and manages job execution. [00221] Next, the operation of this embodiment will be explained with reference to the drawings. The peripheral device information management unit 6 stores the system resource management information of the computer system in the system resource information area 10 on the main storage device and the It is set/updated in the area for the own computer system in the system resource information table 11 on the secondary storage device shared between computer systems. [0023] When a job is submitted, the job input section 20
reads the job description including the execution system specification job control statement, file definition statement, peripheral device allocation request statement, etc., and the job description analysis section 1 sends the job description to the desired execution system information analysis section 2 and the used peripheral device information analysis section 3. and other job control statement analysis units 4. [0024] The desired execution system information analysis unit 2 analyzes the execution system specified job control statement ($NEE) in the job description.
D sentence) is analyzed. The syntax of this execution system specified job control statement ($NEED statement) and the meaning of the SYSTEM parameter are as follows. [0025] $ NEED SYSTEM=k O
The r ANYSYSTEM parameter value k (natural number) indicates the system number of the computer system (desired execution system) on which the job is executed. Also, SYSTEM
The parameter values indicate that the job can be executed on any computer system. [0026] As shown in FIG. 3, if the SYSTEM parameter is specified (process 401), the desired execution system information analysis unit 2 obtains the SYSTEM parameter value (process 402), and checks its validity in process 403.
), set in the desired execution system information 14 (processing 4
04). [00271 The used peripheral device information analysis unit 3 analyzes the file definition statement and the device allocation request statement in the job description, obtains the used peripheral device information such as the device type of the peripheral device necessary for execution, and writes the job attribute information 13 Set it in the peripheral device information 17 in use. [0028] The other job control statement analysis unit 4 analyzes job descriptions excluding execution system specification job control statements, file definition statements, and device allocation request statements. [0029] After all job descriptions have been analyzed, the job description analysis unit 1 calls the execution system determination unit 5, and the execution system determination unit 5 sets executable system information 15 and execution system information 16 using a method described later. When the job attribute information 13 is prepared by setting the executable system information 15 and the execution system information 16, the job description analysis unit 1 sends a job input notification to the job attribute information management unit 8 and passes the job attribute information 13. . [00301 As shown in FIG. 4, the execution system determination unit 5
First, based on the used peripheral device information 17 and the system resource information in the system resource information table 11, a computer system in which all the peripheral devices necessary for job execution are configured and usable, that is, the job can be executed. Step 501) searches for all computer systems that are executable, sets the system number in the executable system information 15 (Step 501), and determines the number of executable computer systems (Step 5O2). [0031] If there is one executable system, the system number of the searched computer system is set in the execution system information 16 (process 503). If there are multiple executable systems, it is determined whether a specific system number or ANY is set in the desired system information 14 (process 504). [0032] If a specific system number is set,
Desired execution system information 14 is executable system information 15
It is determined whether it is included in (process 505). If it is included, the desired execution system information 14 is set to the execution system information 16 (step 506); if it is not included,
Execute all executable system information 15 System information 1
6 (Process 507), it will be subject to load balancing. [0033] In the process 504, the desired execution system information 14
If ANY is set, executable system information 1
Process 507 to set all of 5 in execution system information 16.
), subject to load balancing. In process 502, if there is no executable system, the job is deleted as an error (process 508), and the user is notified of this (process 509). [0034] As shown in FIG. 5, the other system status monitoring unit 7 periodically obtains the operating status of each computer system from the system status table 19 (process 601), and if computer system n is not operating (process 6O2) or when computer system n is overloaded (processing 603
), sends a system n abnormality occurrence notification to the job attribute information management unit 8; (process 604), if the computer system n is operating and there is sufficient load, sends a system n normal operation notification to the job attribute information management unit 8; (process 60)
5). [0035] As shown in FIG. 6, upon receiving the notification (process 701), the job attribute information management unit 8 determines its type (process 7O2). If it is a job input notification, the job attribute information 13 is registered in the job attribute information management table 12. Process 703) A job registration notification is sent to the job starting unit 9 (
Process 704). If it is a system n abnormality occurrence notification, the execution system information 16 is retrieved from the job attribute information management table 12.
One or more system numbers including the system number n are set in the executable system information 15, and the system number n is set in the executable system information 15.
job attribute information 13 in which multiple system numbers including
All are searched (processing 705). [0036] Set the executable system information 15 excluding the system number n in the retrieved job attribute information 13 as the execution system information 16 (706), and set the job attribute information 13 including the changed execution system information 16 as the job attribute. Process 703 to register in the information management table 12
') and sends a job registration notification to the job starting unit 9 (processing 704). [0037] If it is a system n normal operation notification, multiple system numbers including system number n are set in the executable system information 15 from the job attribute information device management table 12, and job status 18 = ``Waiting for startup''. Process to search all certain job attribute information 13 (707)
, calls the execution system determination unit 5, and uses its function to reset the executable system information 15 and execution system information 16 in the job attribute information 13 (processing 708). [0038] Process for registering the job attribute information 13 including the reset executable system information 15 and execution system information 16 in the job attribute information management table 12 (703)
, sends a job registration notification to the job starting unit 9 (process 704
). [0039] As shown in FIGS. 7 and 8, the job starting unit 9
When a notification is received (process 801), its type is determined (
Processing 8O2). If it is a job registration notification, the load status of the own computer system is obtained from the internal table, and there is a margin in the load status of the own computer system (process 803), and furthermore, the job attribute information management table 12 indicates that the load status of the own computer system is executable. If a job, that is, a job whose system number (m) of its own computer system is included in the execution system information 16 and whose job status 18 is "waiting for startup" ° is registered (processing 804), select an appropriate one from among them. Select a job (process 805), start it, and execute it in the execution management section 21.
A job start notification is sent to (processing 806). [00401 Then, the job status 18 of the started job is set to be in execution (process 807), and the multiplicity counter in the internal table is increased by 1 (process 808). [00411 In the example of FIG. 9, job b, job d, and job e are selected for job activation. Here job b
is selected and activated. [00421 Also, upon receiving a job completion notification from the execution management unit 18, the job attribute information 13 of the job is deleted from the job attribute information management table 12 (809);
Decrease the multiplicity counter in the internal table by 1 (process 810), and perform the same process thereafter (processes 803 to 808)
). [0043] [Effects of the Invention] As explained above, according to the present invention,
By automatically selecting an execution system based on the system resource information of each computer system that makes up a loosely coupled computer system, information on peripheral devices used by the job, and desired execution system information during job analysis, the following effects can be achieved. You can expect it. [0044] A computer system in which a peripheral device is always installed and usable even when a job is submitted that uses a peripheral device that is not installed in the computer system or is in an unusable state. It can be executed with [0045] The user can effectively utilize the loosely coupled computer system without knowing the system resource information of each computer system that constitutes the loosely coupled computer system. [0046] Even if a certain computer system is not operating or has a heavy load, by automatically changing the job attribute information of the job set to be executed on that computer system, other executable computers can be used. It can be run on the system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the system configuration of an embodiment of the present invention.

FIG. 2 is an overall system diagram of a loosely coupled computer system to which an embodiment of the present invention is applied.

FIG. 3 is a flowchart of processing by a desired execution system information analysis unit.

FIG. 4 is a flowchart of processing by an execution system determination unit.

FIG. 5 is a flowchart of processing of the other system status monitoring unit.

FIG. 6 is a flowchart of processing by a job attribute information management unit.

FIG. 7 is a flowchart of processing by a job starting unit.

FIG. 8 is a flowchart of processing by a job starting unit, and is a flowchart continuing from FIG. 7.

FIG. 9 is a diagram showing an example of a job attribute information management table.

[Explanation of symbols]

1 Job description analysis section 2 Desired Execution System Information Analysis Department 3 Peripheral device information analysis section 5 Execution system determination unit 6 System resource information management department 7 Other system status monitoring unit 8 Job attribute information management department 9 Job starting section 11 System resource information table 12 Job attribute information management table 13 Job attribute information 19 System status table

[Figure 1]

[Figure 7]

Claims (1)

[Claims] 1. A job execution computer system selection method in a loosely coupled computer system configured such that a plurality of computer systems share a common secondary storage device, wherein the operating status and load status of each of the computer systems is stored. a system status table for storing system resource information for each computer system; a system resource information table for storing configuration system resource information of each of the computer systems; a peripheral device information analysis means for analyzing peripheral devices used in this job when executing a job; a desired execution system information analysis means for analyzing information of a desired execution system on which the job is desired to be executed; and a computer capable of executing the job based on the used peripheral device information, the desired execution system information, the system resource information of the own system, and the system status information. an execution system determination unit that determines a system and obtains execution system information; and an information management unit that updates correspondence information in the table according to the execution system information, and executes a job according to the execution system information. A job execution computer system selection method characterized by: