JPH0689191A - Control system for job step execution system - Google Patents

Abstract

PURPOSE:To reduce the burden to a user and to effectively use a loosely-coupled computer system by preventing the occurrence of error due to misdesignation of a desired execution system to perform the control with one job step as the unit and throwing a job without taking the operation states of peripheral devices and computers into consideration. CONSTITUTION:When a job is thrown in, a job description analysis part 1 analyzes the job description and calls an execution system discriminating part 5 and refers to a peripheral device management information table 10 to generate job control information 13 which has management information of each job step where peripheral devices to be used are taken into consideration. A job control information management part 8 registers it in a job control information table 11 and updates any time by the operation condition of each computer system from a system state monitor part 7. A job step start part 9 selects and starts an executable job from the job control information table 11 by the report from the job control information management part 8 and a job step execution management part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a job step execution system control method, and more particularly to a job step execution system control method for controlling a job execution system in a loosely coupled computer system composed of a plurality of computer systems.

[0002]

2. Description of the Related Art In a loosely coupled computer system, job control information is held together with input data required for job execution on an external storage device that can be shared by a plurality of computer systems, and each job control information is stored based on this job control information. The spooling sharing function, in which the computer system selects and activates jobs, realizes job execution control among a plurality of computer systems and makes effective use of system resources.

The above-mentioned job control information in the conventional loosely coupled computer system is the desired execution system information for each job designated by the execution system information designation job control statement at the time of submitting a job (a system for designating a computer system to execute a job). number, or load which is executed by the computer system for distributed contains information) indicating that it may be, each computer system on the basis of the desired execution system information has been started by selecting the job.

[0004]

In the above-described conventional job step execution system control method, the job starting unit of each computer system is included in the job control information when the job execution unit is ready to execute the job in the own computer system. A job is selected and started based only on the desired execution system information.

Therefore, the input job is a job which uses a peripheral device which is not incorporated in a certain computer system or which is in an unusable state, and is set in the computer system set in the desired execution system information. When the peripheral device is not installed or is in the unusable state, an error occurs when the job is started in the computer system. If the desired execution system information set for a job similar to the above indicates that the job may be executed by any computer system for load balancing, the computer that selected the job An error will occur when the job is started on the computer system even if the peripheral device required for the system is not installed or is in a state where it cannot be used.

In order to avoid the above-mentioned situation, after the user confirms the configuration information of the peripheral devices of each computer system and the status of each peripheral device constituting the loosely coupled computer system, the necessary peripheral devices are installed. There is a drawback in that a computer system that is available and usable must be designated by the execution system designation job control statement.

When a certain computer system stops operating or the load is heavy, a job designated to be executed by that computer system will take a long time to be executed until the state of the computer system is restored. It has the drawback of being held up.

Further, since the control of the execution system is performed on a job basis, there is a drawback that it is not possible to perform fine-grained control corresponding to the state of the loosely coupled computer system which changes from moment to moment.

In view of the above points, an object of the present invention is to provide peripheral device management information and operating state information of each computer system that constitutes a loosely coupled computer system, and use peripheral device information and desired execution system information for each job step. Based on the above, it is possible to automatically select and execute an executable computer system for each job step, and execute a job on a computer system that does not have a peripheral device to be used or is in an unusable state. Job step execution system control that can prevent the occurrence of errors and can automatically execute on other computer systems when a specific computer system malfunctions, reducing the user's burden and effectively using system resources To provide a method.

[0010]

According to a job step execution system control method of the present invention, a job is executed on an external storage device that can be shared by a plurality of computer systems together with input data necessary for executing the submitted job. In the job step execution system control method of the loosely coupled computer system, which has job control information including designation of the computer system, each computer system selects and starts a job by the spooling sharing function. The computer system sets (A) peripheral device management information such as peripheral device types and operating statuses on the external storage device when the computer system is started up, and when the peripheral device status changes, the peripheral device management information is stored. Peripheral device information management section to be updated, and (B) file definition statement and Analyzing the peripheral device allocation request statement,
A peripheral device information analysis unit that acquires used peripheral device information used in each job step, and (C) analyzes the execution system specified job control statement in the job description when the job is submitted, and outputs the desired execution system information for each job step. Desired execution system information analysis unit to be acquired, (D) Peripheral device information used by the used peripheral device information analysis unit for each job step, and peripheral device management of each computer system set on the external storage device Based on the information and the desired execution system information obtained by the desired execution system information analysis unit, an execution system determination unit that determines execution system information and sets execution system information indicating a computer system to be executed, E) Registering the operation and load status of the own computer system on the external storage device,
A system state monitoring unit for monitoring the operation and load status of each computer system held on the external storage device, and (F) job control information including the execution system information and the used peripheral device information is externally stored. A job control information management unit that is registered on the apparatus and updates the execution system information included in the job control information registered in the external storage device according to the notification from the system state monitoring unit; and (G) the job control Job control information registered and managed in the external storage device when a job registration notification is received from the information management unit and when a job step execution management unit that manages the execution of jobs in the local computer system is notified. And a job step starting unit that selects and starts a job that can be executed by the own computer system.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.

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

According to the job step execution system control method of this embodiment, as shown in FIG. 1, a job description analysis unit 1, an execution system determination unit 5, and a peripheral device information management are provided in each computer system constituting a loosely coupled computer system. A peripheral device management information table 10, a job control information table 11 and a system on an external storage device that includes a unit 6, a system state monitoring unit 7, a job control information management unit 8 and a job step activation unit 9 and can be shared by each computer system. State table 1
2 is provided.

The job description analysis unit 1 is composed of a desired execution system information analysis unit 2, a peripheral device information analysis unit 3 and other job description analysis unit 4. The job description analysis unit 1 analyzes the job description when the job is submitted and the job control information 13 To create. The job control information 13 includes a job name 14, a job status 15, and a job step number 1 for each job step.
6, desired execution system information 17, executable system information 18, execution system information 19 and used peripheral device information 20
And are included.

The peripheral device management information table 10, the job control information table 11 and the system status table 12 are
As shown in FIG. 2, it is held in an external storage device 24 shared by a plurality of computer systems. The peripheral device management information table 10 and the system status table 12 respectively store the peripheral device status and system operating status of each computer system, and the job control information table 11 is for job control of jobs waiting or being executed. It is composed of a plurality of entries holding information 13. Although only two computer systems are shown in FIG. 2, in the following description, m (natural number) is the system number of the own computer system, and n (natural number) is the system number of any other computer system. , Respectively.

Next, the operation of this embodiment will be described in detail with reference to the drawings.

In each computer system, the peripheral device information management unit 6 and the system status monitoring unit 7 provide the peripheral device management information and the system operating status information of its own computer system m when the system is started up and when the status changes. The table management area 21 in the main storage device is set and updated in the area for the own computer system in the peripheral device management information table 10 and the system status table 12 in the external storage device 24, respectively.

When a job is input, the job input section 22
Reads the job description including the execution system specified job control statement, file definition statement, peripheral device allocation request statement,
The job description analysis unit 1 analyzes this using the desired execution system information analysis unit 2, the used peripheral device information analysis unit 3, and the other job description analysis unit 4.

The desired execution system information analysis unit 2 executes the execution system designation job control statement ($ NEED) in the job description.
Sentence) is analyzed. FIG. 3 shows the syntax of the execution system specified job control statement, the meaning of the system parameter, and the position described in the job description. Here, the system parameter value k (natural number) indicates the system number of the computer system (desired execution system) that executes the job. The system parameter value ANY indicates that the job may be executed by any computer system.
The execution system specified job control statement is as shown in FIG.
It can be specified for the job or for each job step.

When the job description is received, the desired execution system information analysis unit 2 stores the parameter value ANY in the temporary storage area (process 40).
0), if the execution system designation job control statement is designated (process 401), the system parameter value is obtained (process 402), and the validity is checked (process 403),
The execution system specified job control statement is job step 1
If there is a designation for the entire job before
4) The parameter value is stored in the temporary storage area (process 405). If the execution system designation job control statement is after the job step 1 (process 404), the parameter value is set in the desired execution system information 17 of the job step (process 406). If a valid execution system designation job control statement is not designated for the job step (process 401, 403), the parameter value is obtained from the temporary storage area and set in the desired execution system information 17 of the job step (process. 407). From the above,
If there is a designation for the entire job, the designated parameter value is registered in the desired execution system information 17 of each job step, and if there is a designation for the job step, the designated parameter value is registered in the desired execution system information 17 of the job step. Is registered, and if there is no designation at all, ANY will be registered in the desired execution system information 17.

The used peripheral device information analysis unit 3 analyzes the file definition statement and the device allocation request statement in the job description for each job step to obtain the used peripheral device information such as the device type of the peripheral device necessary for execution. Then, it is set in the used peripheral device information 20 of the job step in the job control information 13.

The other job description analysis unit 4 analyzes the job description excluding the execution system designation job control statement, the file definition statement, and the device allocation request statement.

When all the job descriptions of each job step are analyzed, the job description analysis unit 1 calls the execution system determination unit 5 and the executable system information 18 and the execution system information 19 corresponding to the job step number 16 by the method described later. And set. When the analysis of all job steps is completed and the job control information 13 is completed, the job description analysis unit 1 sends a job input notification to the job control information management unit 8 and passes the job control information 13.

For each job step, the execution system determination unit 5 first configures all peripheral devices necessary for executing the job based on the peripheral device information 20 used and the peripheral device management information in the peripheral device management information table 10. Available computer systems, that is, all computer systems capable of executing jobs are searched, all the retrieved system numbers are set in the executable system information 18 (process 501), and the executable computer system is set. The number of is determined (process 502). If there is only one executable computer system, the system number of the retrieved computer system is set in the execution system information 19 (process 503). If there are multiple executable computer systems, is a specific system number set in the desired execution system information 17?
It is determined whether NY is set (process 504). If a specific system number is set, the system number of the desired execution system information 17 is the executable system information 18
It is determined whether or not it is included in (step 505). If it is included, the system number of the desired execution system information 17 is set in the execution system information 19 (process 506). If it is not included, all system numbers of the executable system information 18 are set in the execution system information 19. (Process 5
07), which is the target of load balancing. In the determination of processing 504,
If ANY is set in the desired execution system information 17, all the system numbers of the executable system information 18 are set in the execution system information 19 (process 507), and are subject to load balancing. If there is no executable system in the determination of process 502, the entire job is deleted as an error (process 508) and the user is notified of that (process 509).

The system status monitoring unit 7 updates the system status table 12 whenever the system operating status of the computer system m is changed, and periodically updates the system status table 12 from the system status table 12 as shown in FIG. When the operating status of the other computer system n is acquired (process 601) and the other computer system n is not running (process 602), or when the other computer system n is in an overloaded state (process 60).
3), the system n abnormality occurrence notification is sent to the job control information management unit 8 (process 604), and when the other computer system n is operating and there is a margin in the load status, the system n normal operation notification is sent to the job control information. Send to management unit 8 (process 60)
5).

As shown in FIG. 7, when the job control information management unit 8 receives a notification from the job description analysis unit 1 or the system state monitoring unit 7 (process 701), it determines the type of the notification (process 702). . If the notification is a job input notification, the created job control information 13 is registered in the job control information table 11 (process 703), and a job registration notification is sent to the job step activation unit 9 (process 704). If the notification is a system n error occurrence notification, the system number including the system number n is set in the execution system information 19 from the job control information table 11 and the job status 15 is searched for all the job control information 13 in the waiting state for starting. Then, all the system numbers except the system number n registered in the executable system information 18 in the retrieved job control information 13 are reset in the execution system information 19 (process 706) and changed. The job control information table 11 is updated with the job control information 13 including the execution system information 19 (process 703), and a job registration notification is sent to the job step activation unit 9 (process 70).
4). If the notification is the system n normal operation notification, a system number including the system number n is set in the executable system information 18 from the job control information table 11, and all the job control information 13 whose job status 15 is waiting for execution is set. A search is performed (process 707), the execution system determination unit 5 is called, the executable system information 18 and the execution system information 19 in the job control information 13 are reset using the function (process 708), and reset. The job control information table 11 includes the job control information 13 including the executable system information 18 and the execution system information 19.
Is updated (step 703), and a job registration notification is sent to the job step activation unit 9 (step 704). As described above, if there is a change in the operating state of each computer system or the state of peripheral devices, the job control information 13 in the execution waiting state in the job control information table 11 is updated without delay in response to the change.

As shown in FIG. 8, when the job step activation unit 9 receives a notification from the job control information management unit 8 or the job step execution management unit 23 (process 801), it determines the type of the process (process 802). If the notification is a job registration notification from the job control information management unit 8, the load status of the computer system m is acquired from the table management area 21 and there is a margin in the load status (process 803). Jobs that can be executed on the local computer system m, that is, the system number "m" of the local computer system m
Is included in the execution system information 19 and a job whose job status 15 is waiting for activation is registered (process 804), an appropriate (for example, previously registered) job is selected from among them. The job is started (process 805), a job step start notification is sent to the job step execution management unit 23 (process 806), the job status 15 of the started job is set to running (process 807), and the multiplicity counter in the table management area 21 is set. Is incremented by 1 (process 80
8). Now, assuming that the job control information table 11 is in the state shown in FIG. 9, the job status 15, the job b, the job d, and the job e waiting to be executed are selected for activation. If job b is selected and started here,
The job status 15 is updated during execution.

If the notification is a job step end notification from the job step execution management unit 23, 1 is added to the job step number of the job status 15 of the job to wait for start (process 809), and the table management area 21 The multiplicity counter is decremented by 1 (process 811), and the same process as the above-described job registration notification is performed (processes 803 to 808). If the notification is a job end notification, the job control information 13 of the job is deleted from the job control information table 11 (process 810), and the table management area 21
The multiplicity counter therein is decremented by 1 (process 811), and the same process is performed thereafter (processes 803 to 808).

As described above, each computer system has a margin in its own computer system when a new job is input to the computer system, a job waiting to be executed is updated, a job being executed is finished, or the like. If there is a,
It is possible to reliably select and execute the waiting jobs that can be executed by the own computer system.

[0030]

As described above, according to the job step execution system control method of the present invention, in addition to the desired execution system information specified at the time of job submission, the peripheral device management information of each computer system constituting the loosely coupled computer system is provided. The job control information is created by registering the actually executable computer system for each job step, and it is updated at any time according to the operating status of each computer system. The following effects can be expected by selecting a job based on the above.

(1) Even if a job that uses a peripheral device that is not installed in a computer system or is in an unusable state is submitted, that device is installed and used for each job step. It can be executed by a computer system in a ready state.

(2) When a certain computer system is not operating or the load is large, the execution system information of the job step set to be executed by the computer system is automatically changed and another execution is performed. It can be run on any computer system possible.

(3) The user can effectively use the loosely coupled computer system without knowing the peripheral device management information of each computer system constituting the loosely coupled computer system.

[Brief description of drawings]

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

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

FIG. 3 is an explanatory diagram of syntax and meaning of an execution system designation job control statement.

FIG. 4 is a flowchart of a process of a desired execution system information analysis unit in FIG.

5 is a flowchart of a process of an execution system determination unit in FIG.

FIG. 6 is a flowchart of processing of a system state monitoring unit in FIG.

FIG. 7 is a flowchart of processing of a job control information management unit in FIG.

FIG. 8 is a flowchart of a process of a job step starting unit in FIG.

9 is an explanatory diagram showing an example of a job control information table in FIG.

[Explanation of symbols]

 1 Job description analysis unit 2 Desired execution system information analysis unit 3 Used peripheral device information analysis unit 4 Other job description analysis unit 5 Execution system determination unit 6 Peripheral device information management unit 7 System status monitoring unit 8 Job control information management unit 9 Job step Start-up unit 10 Peripheral device management information table 11 Job control information table 12 System status table 13 Job control information 14 Job name 15 Job status 16 Job step number 17 Desired execution system information 18 Executable system information 19 Execution system information 20 Peripheral device information 21 table management area 22 job input section 23 job step execution management section 24 external storage device

Claims (1)

[Claims] 1. Spooling sharing is provided on an external storage device that can be shared by a plurality of computer systems, with job control information including designation of a computer system that executes a job together with input data required to execute a submitted job. In the job step execution system control method of the loosely coupled computer system, in which each computer system selects and starts a job according to the function, each computer system that constitutes the loosely coupled computer system has a type of peripheral device at the time of starting the computer system, A peripheral device information management unit that sets peripheral device management information such as operating status on the external storage device and updates the peripheral device management information when the peripheral device status changes, and a file definition in the job description when the job is submitted. Statement and peripheral device assignment request statement are analyzed, and the usage frequency used in each job step is analyzed. Peripheral device information analysis unit that acquires device information, a desired execution system information analysis unit that analyzes the execution system specified job control statement in the job description when the job is submitted, and acquires the desired execution system information for each job step, and the job Use peripheral device information obtained by the use peripheral device information analysis unit for each step, and peripheral device management information of each computer system set on the external storage device,
Based on the desired execution system information obtained by the desired execution system information analysis unit, an execution system determination unit that sets execution system information indicating a computer system that determines and executes an executable computer system; A system status monitoring unit for registering the operating and load statuses on the external storage device and monitoring the operating and load statuses of the respective computer systems held on the external storage device; the execution system information and the used peripheral devices. Job control for registering job control information including information on the external storage device, and updating the execution system information included in the job control information registered in the external storage device according to a notification from the system state monitoring unit. An information management unit, when a job registration notification is received from the job control information management unit, and When the job step execution management unit that manages the execution of the system job is notified, the job control information registered and managed in the external storage device is searched, and the job that can be executed by the own computer system is selected. A job step execution system control method, comprising: