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| abstract:farber:runjobs:runjobs [2018-07-16 15:13] – [Grid Engine] anita | abstract:farber:runjobs:runjobs [2018-08-09 15:01] (current) – [What is a Job?] anita |
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| * a set of environment variables | * a set of environment variables |
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| For an //[[abstract/farber/runjobs/schedule_jobs#interactive-jobs-qlogin|interactive job]]//, the user manually types the sequence of commands once the job is eligible for execution. If the necessary resources for the job are not immediately available, then the user must wait; when resources are available, the user must be present at his/her computer in order to type the commands. Since the job scheduler does not care about the time of day, this could happen anytime, day or night. | For an //[[abstract:farber:runjobs:schedule_jobs#interactive-jobs-qlogin|interactive job]]//, the user manually types the sequence of commands once the job is eligible for execution. If the necessary resources for the job are not immediately available, then the user must wait; when resources are available, the user must be present at his/her computer in order to type the commands. Since the job scheduler does not care about the time of day, this could happen anytime, day or night. |
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| By comparison, a //[[abstract/farber/runjobs/schedule_jobs#batch-jobs-qsub|batch job]]// does not require the user be awake and at his or her computer: the sequence of commands is saved to a file, and that file is given to the job scheduler. A file containing a sequence of shell commands is also known as a //script//, so in order to run batch jobs a user must become familiar with //shell scripting//. The benefits of using batch jobs are significant: | By comparison, a //[[abstract:farber:runjobs:schedule_jobs#batch-jobs-qsub|batch job]]// does not require the user be awake and at his or her computer: the sequence of commands is saved to a file, and that file is given to the job scheduler. A file containing a sequence of shell commands is also known as a //script//, so in order to run batch jobs a user must become familiar with //shell scripting//. The benefits of using batch jobs are significant: |
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| * a //job script// can be reused (versus repeatedly having to type the same sequence of commands for each job) | * a //job script// can be reused (versus repeatedly having to type the same sequence of commands for each job) |