Method and system for controlling parallel execution of jobs

In a computer system for executing in a multiplex fashion a plurality of jobs by inputting a program for execution and jobs designating resources to be used by said program by employing job control statements and scheduling said jobs in virtual address spaces available in the computer system, said jobs including at least one job constituted by a plurality of job steps,

• a method of controlling parallel execution of the plurality of job steps of said one job, comprising the steps of:
• analyzing, during execution of said plurality of job steps, a job control statement indicating that a designated job step is not to be executed;
• and
• scheduling, during said execution of said plurality of job steps, said job steps of said one job other than said designated job step in a first virtual address space and scheduling, during said execution of said plurality of job steps, said designated job step of said one job in another virtual address space for parallel execution of said job steps of said one job other than said designated job step in said first virtual address space and said designated job step of said one job in said another virtual address space.

In a computer system for executing in a multiplex fashion a plurality of jobs by inputting a program for execution and jobs designating resources to be used by said program by employing job control statements and scheduling said jobs in virtual address spaces available in the computer system,

• a method of controlling parallel execution of a job, comprising the steps of:
• analyzing, during execution of said job, a job control statement indicating that the job can be executed in parallel;
• and
• scheduling, during said execution of said job, the execution of said job in a first virtual address space and scheduling, during said execution of said job, the execution of said job in another virtual address space for parallel execution of said job in both said first virtual address space and said another virtual address space.

In a computer system for executing in a multiplex fashion a plurality of jobs by inputting a program for execution and jobs designating resources to be used by said program by employing job control statements and scheduling said jobs in virtual address spaces available in the computer system,

• a method for controlling parallel execution of a plurality of job steps of a job, comprising the steps of:
• analyzing, during execution of said job steps, a job control statement indicating that a first designated job step of said job can be executed in parallel with a second job step of said job;
• and
• scheduling, during said execution of said job steps, the execution of said job steps of said plurality of job steps in a first address space and scheduling, during said execution of said job steps, the execution of the other of said plurality of job steps in another address space for execution of said first designated job step in said first address space and the other of said plurality of job steps in said another address space.

A computer system, comprising:

• job registration processing means for searching a job selected to be executed, said job including a plurality of job steps;
• job control statement interpreting means for deciding by interpreting a job control statement designating that parallel execution can be performed for one of said plurality of job steps included in said job;
• and
• processing means for commanding said job registration processing means to schedule, during execution of said plurality of job steps, a designated one of said plurality of job steps in a first virtual address space and to schedule, during said execution of said plurality of job steps, the job steps other than said one job step of said plurality of job steps in another virtual address space.

A computer system, comprising:

• job registration processing means for searching a job to be executed, said job including a plurality of job steps;
• job control statement interpreting means for deciding, during execution of said plurality of job steps, by interpreting a job control statement designating that execution is to be skipped for a designated one of said plurality of job steps;
• job step execution control means for scheduling, during said execution of said plurality of job steps, said job to be executed without said designated job step in a first address space and scheduling, during said execution of said plurality of job steps, said designated job step of said job in a second address space;
• and
• processing means for commanding said job step execution control means to execute said job in either of said first and second address spaces, respectively.