On occasion it may be necessary to remove a waiting job from the queue, or to stop a running job (and remove it from the queue). This is done using You can identify the jobid typing the command See the information on Job Arrays (Slurm)<\/a> for how to delete all tasks in the job array or specific tasks.<\/p>\n Do not attempt to modify running jobs, if you have made a mistake in specifying job resources and the job is already running, “scancel” the job, clean up the outputs, correct your sbatch script and resubmit.<\/p>\n If you are in any doubt about how to edit jobs, use Change time limit<\/strong> this will prevent the job from starting while you make changes. Then review the details of the job you want to change:<\/p>\n Then change the time limit:<\/p>\n where the jobid is the id of your job and the TimeLimit can be set to any valid duration. If you get ‘permission denied’ then you have asked for a duration that is not permitted by the partition.<\/p>\n Check the changes you have made:<\/p>\n Once you are happy, release the job:<\/p>\n Change CPU resources<\/strong><\/p>\n Start by holding the job you want to change:<\/p>\n This will prevent the job from starting while you make changes. Then review the details of the job you want to change:<\/p>\n The relevant parameters are:<\/p>\n whatever you change, NumCPUs must = NumTasks * CPUs\/Task; However, CPUs\/Task cannot be changed. For example, with:<\/p>\n a valid change is:<\/p>\n but with:<\/p>\n examples of valid changes are:<\/p>\n Check the changes you have made:<\/p>\n Once you are happy, release the job:<\/p>\n Deleting jobs in Slurm On occasion it may be necessary to remove a waiting job from the queue, or to stop a running job (and remove it from the queue). This is done using scancel . For example scancel 18076 # # replace 18076 with your job id You can identify the jobid typing the command squeue on its own. Deleting Job Array Tasks See the information on Job Arrays (Slurm) for how to delete.. Read more »<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":9105,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9113","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/comments?post=9113"}],"version-history":[{"count":9,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9113\/revisions"}],"predecessor-version":[{"id":11962,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9113\/revisions\/11962"}],"up":[{"embeddable":true,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9105"}],"wp:attachment":[{"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/media?parent=9113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}scancel<\/code> . For example<\/p>\nscancel 18076\r\n #\r\n # replace 18076 with your<\/em> job id\r\n<\/pre>\n
squeue<\/code> on its own.<\/p>\nDeleting Job Array Tasks<\/h3>\n
Modifying jobs in slurm<\/h2>\n
Running jobs<\/h3>\n
Pending jobs<\/h3>\n
scontrol<\/code> can be used to modify pending jobs, use this with care as it is possible to put your job into a non-runnable state. <\/p>\nscancel<\/code>, edit your sbatch script and resubmit. AI responses (search and chatbots) do not produce reliable Slurm commands if you do not know what you need to ask for.<\/p>\n
\nStart by holding the job you want to change:<\/p>\n\r\nscontrol hold jobid=1234567\r\n<\/pre>\n
\r\nscontrol show jobid=1234567\r\n<\/pre>\n
scontrol update jobid=1234567 TimeLimit=4-0<\/pre>\n
\r\nscontrol show jobid=1234567\r\n<\/pre>\n
\r\nscontrol release jobid=1234567\r\n<\/pre>\n
\r\nscontrol hold jobid=1234567\r\n<\/pre>\n
\r\nscontrol show jobid=1234567\r\n<\/pre>\n
\r\nNumNodes=1 NumCPUs=XX NumTasks=YY CPUs\/Task=ZZ\r\n<\/pre>\n
\r\nNumNodes=1 NumCPUs=22 NumTasks=22 CPUs\/Task=1\r\n<\/pre>\n
\r\nscontrol update jobid=1234567 NumCPUs=20 NumTasks=20\r\n<\/pre>\n
\r\nNumNodes=1 NumCPUs=44 NumTasks=22 CPUs\/Task=2\r\n<\/pre>\n
\r\nscontrol update jobid=1234567 NumCPUs=40 NumTasks=20 # Because CPUs\/Task is fixed at 2\r\nscontrol update jobid=1234567 NumCPUs=20 NumTasks=10 # Because CPUs\/Task is fixed at 2\r\n<\/pre>\n
\r\nscontrol show jobid=1234567\r\n<\/pre>\n
\r\nscontrol release jobid=1234567\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"