{"id":7599,"date":"2024-04-24T14:56:58","date_gmt":"2024-04-24T13:56:58","guid":{"rendered":"https:\/\/research.reading.ac.uk\/act\/?post_type=kbe_knowledgebase&p=7599"},"modified":"2024-05-02T14:21:51","modified_gmt":"2024-05-02T13:21:51","slug":"racc2-slurm-commands","status":"publish","type":"kbe_knowledgebase","link":"https:\/\/research.reading.ac.uk\/act\/knowledgebase\/racc2-slurm-commands\/","title":{"rendered":"RACC2 – Slurm commands"},"content":{"rendered":"

Essential SLURM commands<\/h2>\n

This is a compact reference sheet for the most essential SLURM commands and their usage. Not all possible commands are listed here. For more information about command options\/flags and additional commands, please refer to SLURM’s own manual pages<\/a> or their summary sheet<\/a>, however please note that some commands in those pages are available for system administrators only.<\/p>\n\n\n\n\n\n\n\n\n\n
\n

Command<\/h3>\n<\/td>\n

\n

Description<\/h3>\n<\/td>\n

\n

Usage<\/h3>\n<\/td>\n<\/tr>\n

sbatch<\/td>\nSubmits a batch job to the queue.<\/td>\n\n
sbatch jobscript.sh<\/pre>\n<\/td>\n<\/tr>\n
squeue<\/td>\nDisplays the state of a submitted job.<\/p>\n

Use with -u for job information for a specific username.<\/td>\n

\n
squeue -u username<\/pre>\n<\/td>\n<\/tr>\n
scancel<\/td>\nKills an existing job.<\/p>\n

Infer the jobID with squeue.<\/td>\n

\n
scancel jobID<\/pre>\n<\/td>\n<\/tr>\n
sinfo<\/td>\nDisplays all available cluster resources.<\/td>\n\n
sinfo<\/pre>\n<\/td>\n<\/tr>\n
sacct<\/td>\nView job accounting data, use with -j for specific jobIDs.<\/td>\n\n
sacct -j jobID<\/pre>\n<\/td>\n<\/tr>\n
salloc<\/td>\nAllocates compute node resources for interactive use.<\/td>\n\n
salloc<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n
Monitoring cluster resources with \u2018<\/strong>sinfo<\/strong>\u2019:<\/strong><\/p>\n
As \u2018short\u2019 is the default partition, it is convenient to display the resources for just this one, by adding \u2018-p short\u2019 to the \u2018sinfo\u2019 command. By default, the nodes which are in the same state are grouped together.<\/p>\n
$ sinfo -p short\r\n\r\nPARTITION AVAIL TIMELIMIT NODES STATE NODELIST\r\nshort* up 1-00:00:00 1 mix# racc2-comp-2\r\nshort* up 1-00:00:00 29 idle~ racc2-comp-[3-31]\r\nshort* up 1-00:00:00 2 mix racc2-comp-[0-1]<\/pre>\n
The above output shows that nodes 3-31 are idle, and \u2018~\u2019 means they are switched off to save power. Nodes 1 and 2 are in a ‘mix’ state, meaning that some of the cores on the node are in use and some of them are free. Fully allocated nodes show the status ‘alloc’,\u00a0meaning they will not be available for new jobs until the jobs currently running on them are finished.<\/p>\n
Further details can be displayed using the \u2018-o\u2019 flag. See the manual page, \u2018man sinfo<\/a>\u2019, for more details on format specifiers. In this example, the number of CPU cores are displayed with the command:<\/p>\n
$ sinfo -p short -o \"%P %.6t %C\"\r\n\r\nPARTITION STATE CPUS(A\/I\/O\/T)\r\nshort* mix# 48\/80\/0\/128\r\nshort* idle~ 0\/3712\/0\/3712\r\nshort* mix 240\/16\/0\/256\r\n<\/pre>\n
A\/I\/O\/T stands for Allocated\/Idle\/Other\/Total. The idle and switched off nodes have 3712 cores available. There is a node that is partially allocated, and another that is partially allocated and is being started (mix#). In total, there are 3808 cores (80 + 3712 + 16) available for new jobs.<\/p>\n
Nodes can be listed individually by adding the \u2018-N\u2019 flag:<\/p>\n
$ sinfo -p short -N -o \"%N %.6t %C\"\r\nNODELIST  STATE CPUS(A\/I\/O\/T)\r\nracc2-comp-0 idle 0\/128\/0\/128\r\nracc2-comp-1 idle 0\/128\/0\/128\r\nracc2-comp-2 idle~ 0\/128\/0\/128\r\nracc2-comp-3 idle~ 0\/128\/0\/128\r\nracc2-comp-4 idle~ 0\/128\/0\/128\r\nracc2-comp-5 idle~ 0\/128\/0\/128\r\nracc2-comp-6 idle~ 0\/128\/0\/128\r\nracc2-comp-7 idle~ 0\/128\/0\/128\r\nracc2-comp-8 idle~ 0\/128\/0\/128\r\nracc2-comp-9 idle~ 0\/128\/0\/128\r\nracc2-comp-10 idle~ 0\/128\/0\/128\r\nracc2-comp-11 idle~ 0\/128\/0\/128\r\nracc2-comp-12 idle~ 0\/128\/0\/128\r\nracc2-comp-13 idle~ 0\/128\/0\/128\r\nracc2-comp-14 idle~ 0\/128\/0\/128\r\nracc2-comp-15 idle~ 0\/128\/0\/128\r\nracc2-comp-16 idle~ 0\/128\/0\/128\r\nracc2-comp-17 idle~ 0\/128\/0\/128\r\nracc2-comp-18 idle~ 0\/128\/0\/128\r\nracc2-comp-19 idle~ 0\/128\/0\/128\r\nracc2-comp-20 idle~ 0\/128\/0\/128\r\nracc2-comp-21 idle~ 0\/128\/0\/128\r\nracc2-comp-22 idle~ 0\/128\/0\/128\r\nracc2-comp-23 idle~ 0\/128\/0\/128\r\nracc2-comp-24 idle~ 0\/128\/0\/128\r\nracc2-comp-25 idle~ 0\/128\/0\/128\r\nracc2-comp-26 idle~ 0\/128\/0\/128\r\nracc2-comp-27 idle~ 0\/128\/0\/128\r\nracc2-comp-28 idle~ 0\/128\/0\/128\r\nracc2-comp-29 idle~ 0\/128\/0\/128\r\nracc2-comp-30 idle~ 0\/128\/0\/128\r\nracc2-comp-31 idle~ 0\/128\/0\/128\r\n\r\n<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Essential SLURM commands  This is a compact reference sheet for the most essential SLURM commands and their usage. Not all possible commands are listed here. For more information about command options\/flags and additional commands, please refer to SLURM’s own manual pages or their summary sheet, however please note that some commands in those pages<\/p>\n","protected":false},"author":421,"featured_media":223,"template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"__cvm_playback_settings":[],"__cvm_video_id":"","_links_to":"","_links_to_target":""},"kbe_taxonomy":[100],"kbe_tags":[],"class_list":["post-7599","kbe_knowledgebase","type-kbe_knowledgebase","status-publish","has-post-thumbnail","hentry","kbe_taxonomy-racc2"],"acf":[],"yoast_head":"\nRACC2 - Slurm commands - Academic Computing Team<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/research.reading.ac.uk\/act\/knowledgebase\/racc2-slurm-commands\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RACC2 - Slurm commands - Academic Computing Team\" \/>\n<meta property=\"og:description\" content=\"Essential SLURM commands This is a compact reference sheet for the most essential SLURM commands and their usage. 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