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slurm [2023/04/13 17:02]
dusek 		slurm [2025/10/15 18:09] (current)
straka [ÚFAL Grid Engine (LRC)]
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 ====== ÚFAL Grid Engine (LRC) ====== ====== ÚFAL Grid Engine (LRC) ======
 +
 +**IN 2024: Newly, all the documentation is at a dedicated wiki https://ufal.mff.cuni.cz/lrc (you need to use ufal and [[internal:welcome-at-ufal#small-linguistic-password|small-linguistic password]] to access the wiki from outside of the UFAL network).***
  
 LRC (Linguistic Research Cluster) is the name of ÚFAL's computational grid/cluster. The cluster is built on top of [[https://slurm.schedmd.com/|SLURM]] and is using [[https://www.lustre.org/|Lustre]] for [[internal:linux-network#directory-structure|data storage]]. LRC (Linguistic Research Cluster) is the name of ÚFAL's computational grid/cluster. The cluster is built on top of [[https://slurm.schedmd.com/|SLURM]] and is using [[https://www.lustre.org/|Lustre]] for [[internal:linux-network#directory-structure|data storage]].
  
-See Milan Straka's intro to Slurm (and Spark if you want):+See Milan Straka's intro to Slurm (and Spark and possibly also the [[https://ufal.mff.cuni.cz/courses/npfl118#assignments|NPFL118 assingments]] if you want). Use the username=ufal and small linguistic password:
  
-  * https://lectures.ms.mff.cuni.cz/video/rec/npfl118/2223/npfl118-2223-winter-slurm.mp4 +  * https://lectures.ms.mff.cuni.cz/video/rec/npfl118/2425/npfl118-2425-winter-slurm.mp4 
-  * https://lectures.ms.mff.cuni.cz/video/rec/npfl118/2223/npfl118-2223-winter-spark.mp4+  * https://lectures.ms.mff.cuni.cz/video/rec/npfl118/2425/npfl118-2425-winter-spark.mp4
  
 Currently there are following partitions (queues) available for computing: Currently there are following partitions (queues) available for computing:
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 </code> </code>
  
-==== Running jobs ====+==== Inspecting jobs ====
  
 In order to inspect all running jobs on the cluster use: In order to inspect all running jobs on the cluster use:
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 <code> <code>
 squeue squeue
 +</code>
 +
 +filter only my jobs
 +
 +<code>
 +squeue --me
 </code> </code>
  
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   * ''-''''-constraint="gpuram48G|gpuram40G"'' only consider nodes that have either ''gpuram48G'' or ''gpuram40G'' feature defined   * ''-''''-constraint="gpuram48G|gpuram40G"'' only consider nodes that have either ''gpuram48G'' or ''gpuram40G'' feature defined
  
 +
 +\\
 +**Unexpected Behavior of ''srun -c1''**
 +When you execute a command using ''srun'' and pass ''-c1'' like
 +<code>srun -c1 date</code>
 +then the command is actually executed **twice in parallel**. To avoid it, you have to either **remove the ''-c1''** or also **add explicit ''-n1''.**
 ==== Delete Job ==== ==== Delete Job ====
 <code>scancel <job_id> </code> <code>scancel <job_id> </code>
 +
 +<code>scancel -n <job_name> </code>
 +
  
 To see all the available options type: To see all the available options type:
  
-<code>man srun</code>+<code>man scancel</code>
  
 ==== Basic commands on cluster machines ==== ==== Basic commands on cluster machines ====

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