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--- cluster:134 [2014/08/19 18:05]
hmeij [High Throughput]
+++ cluster:134 [2014/08/22 13:05] (current)
hmeij [MPI]
@@ Line 101: / Line 101: @@
 [[https://computing.llnl.gov/linux/slurm/high_throughput.html]]
+Vanilla out of the box with these changes
   * MaxJobCount=120000
@@ Line 119: / Line 121: @@
 </code>
-After fixing that.
+After fixing that. Hmmm.
-^NrJobs^N^hh:mm^N^hh:mm^
+^NrJobs^N^hh:mm^
-| 1,000|8|00:??|
+| 1,000|8|00:02|
-|10,000|8|00:??|
+|10,000|8|00:22|
-|25,000|8|00:??|
+|15,000|8|00:31|
-|50,000|8|00:??|
+|20,000|8|00:41|
-Debug Level is 3. Maybe go to 1.
+Debug Level is 3 above. Falling back to proctrack/pgid while setting debug to level 1. Also setting SchedulerType=sched/builtin (removing the backfill). This is throughput allright, just 8 KVM nodes handling the jobs.
- (I also added a proplog/epilog script to my submit job script which will created /localscratch/$SLURM_JOB_ID, echo the date into file foo, then cat foo to standard out and finish with removing the scratch dir). These prolog/epilog actions needs to be done by slurmd but so far it errors for me.
+^NrJobs^N^hh:mm:ss^
+| 1,000|8|00:00:34|
+|10,000|8|00:05:57|
+|25,000|8|00:15:07|
+|50,000|8|00:29:55|
+|75,000|8|00:44:15|
+|100,000|8|00:58:16|
+ Next I will add a proplog/epilog script to my submit job script which will create
+/localscratch/$SLURM_JOB_ID, echo the date into file foo, then cat foo to standard out and finish with removing the scratch dir. These prolog/epilog actions needs to be done by slurmd but so far it errors for me.  Does slow things down a bit. Same conditions as above.
+<code>
+#!/bin/bash
+/share/apps/lsf/slurm_prolog.pl
+#SBATCH --job-name="NUMBER"
+#SBATCH --output="tmp/outNUMBER"
+#SBATCH --begin=10:00:00
+# unique job scratch dir
+export MYLOCALSCRATCH=/localscratch/$SLURM_JOB_ID
+cd $MYLOCALSCRATCH
+pwd
+echo "$SLURMD_NODENAME JOB_PID=$SLURM_JOB_ID" >> foo
+date  >> foo
+cat foo
+/share/apps/lsf/slurm_epilog.pl
+</code>
+^NrJobs^N^hh:mm:ss^
+| 1,000|8|00:05:00|
+| 5,000|8|00:23:43|
+|10,000|8|00:47:12|
+|25,000|8|00:58:01|
+==== MPI ====
+With ''sbatch'' there is no need for a wrapper script, slurm figures it all out.
+<code>
+#!/bin/bash
+#/share/apps/lsf/slurm_prolog.pl
+#SBATCH --job-name="MPI"
+#SBATCH --ntasks=8
+#SBATCH --begin=now
+# unique job scratch dir
+#export MYLOCALSCRATCH=/localscratch/$SLURM_JOB_ID
+#cd $MYLOCALSCRATCH
+echo "$SLURMD_NODENAME JOB_PID=$SLURM_JOB_ID"
+rm -rf err out logfile mdout restrt mdinfo
+export PATH=/share/apps/openmpi/1.2+intel-9/bin:$PATH
+export LD_LIBRARY_PATH=/share/apps/openmpi/1.2+intel-9/lib:$LD_LIBRARY_PATH
+which mpirun
+mpirun /share/apps/amber/9+openmpi-1.2+intel-9/exe/pmemd -O \
+-i inp/mini.in -p 1g6r.cd.parm -c 1g6r.cd.randions.crd.1 \
+-ref 1g6r.cd.randions.crd.1
+#/share/apps/lsf/slurm_epilog.pl
+</code>
+When submitted we see
+<code>
+             JOBID PARTITION     NAME     USER ST       TIME  NODES NODELIST(REASON)
+      test      MPI    hmeij  R       0:05      8 v[1-8]
+</code>
+Dumping the environment we observe some key parameters
+<code>
+SLURM_NODELIST=v[1-8]
+SLURM_JOB_NAME=MPI
+SLURMD_NODENAME=v1
+SLURM_NNODES=8
+SLURM_NTASKS=8
+SLURM_TASKS_PER_NODE=1(x8)
+SLURM_NPROCS=8
+SLURM_CPUS_ON_NODE=1
+SLURM_JOB_NODELIST=v[1-8]
+SLURM_JOB_CPUS_PER_NODE=1(x8)
+SLURM_JOB_NUM_NODES=8
+</code>
+And in the slurmjob.log file
+<code>
+JobId=902245 UserId=hmeij(8216) GroupId=its(623) \
+Name=MPI JobState=COMPLETED Partition=test TimeLimit=UNLIMITED \
+StartTime=2014-08-21T15:55:06 EndTime=2014-08-21T15:57:04 \
+NodeList=v[1-8] NodeCnt=8 ProcCnt=8 WorkDir=/home/hmeij/1g6r/cd
+</code>
 \\
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