Changes between Version 2 and Version 3 of Workshops/cypress/SlurmPractice

Timestamp:

08/22/18 13:24:53 (7 years ago)

Author:

fuji

Comment:

—

Workshops/cypress/SlurmPractice

@@ -91 +91 @@
 || long        || 168 ||168 hours ||  8 ||
 
-The differences between '''normal''' and '''long''' are the number of nodes you can request and duration you can run your code.
+The differences between '''normal''' and '''long''' are the number of nodes you can request and  the duration you can run your code.
 The details will be explained in Parallel Jobs below.
 
@@ -161 +161 @@
 }}}
 
-
-
+=== Cancel Jobs ===
+Look at '''slurmscrit2''',
+{{{
+[fuji@cypress1 SerialJob]$ cat slurmscript2
+#!/bin/bash
+#SBATCH --qos=workshop            # Quality of Service
+#SBATCH --partition=workshop      # partition
+#SBATCH --job-name=pythonLong       # Job Name
+#SBATCH --time=00:01:00         # WallTime
+#SBATCH --nodes=1               # Number of Nodes
+#SBATCH --ntasks-per-node=1     # Number of tasks (MPI processes)
+#SBATCH --cpus-per-task=1       # Number of threads per task (OMP threads)
+
+module load anaconda
+python hello.py
+
+sleep 3600
+}}}
+
+The major difference from '''slurmscrit1''' is the last line '''sleep 3600''', which makes Bash to wait for 3600 seconds at this point.
+
+Submit the job,
+{{{
+[fuji@cypress1 SerialJob]$ sbatch slurmscript2
+Submitted batch job 773951
+}}}
+
+The '''squeue''' command gives you a list of jobs running/queued on Cypress.
+The '''squeue''' command also tells us what node our job is being run on. 
+To single out your own job you can use the "-u" option flag to specify your user name.
+
+{{{
+[fuji@cypress1 SerialJob]$ squeue -u fuji
+     JOBID    QOS               NAME     USER ST       TIME NO NODELIST(REASON)
+    773951 worksh         pythonLong     fuji  R       0:07  1 cypress01-117
+}}}
+
+To stop the job, 
+{{{
+[fuji@cypress1 SerialJob]$ scancel 773951
+[fuji@cypress1 SerialJob]$ squeue -u fuji
+     JOBID    QOS               NAME     USER ST       TIME NO NODELIST(REASON)
+}}}
+
+You will see a new file again.
+{{{
+[fuji@cypress1 SerialJob]$ ls
+hello.py  slurm-773944.out  slurm-773951.out  slurmscript1  slurmscript2
+}}}
+
+The new file contains
+{{{
+[fuji@cypress1 SerialJob]$ cat slurm-773951.out
+Hello, world!
+2018-08-22T13:17:00.965433
+cypress01-117
+slurmstepd: error: *** JOB 773951 CANCELLED AT 2018-08-22T13:17:25 ***
+}}}