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 # To delete all of my jobs (running and pending) CAUTION!!! scancel –me You can identify the jobid typing the command squeue on its own. Deleting Job.. 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":12,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9113\/revisions"}],"predecessor-version":[{"id":12340,"href":"https:\/\/ri.itservices.manchester.ac.uk\/csf3\/wp-json\/wp\/v2\/pages\/9113\/revisions\/12340"}],"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>\n\r\nscancel 18076\r\n #\r\n # replace 18076 with your<\/em> job id\r\n\r\n# To delete all<\/strong> of my jobs (running and pending) CAUTION!!!<\/strong>\r\nscancel --me\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":"