565. Setting up slurm on debian wheezy (very basic)

I have a problem: I've got access to stampede.tacc in Texas which is using slurm as the queue manager. And while I've got SGE figured out (use it on my own cluster, my collaborator's cluster and it's used on the university cluster) I'm having some conceptual issues with SLURM.

I don't have any problems writing slurm scripts -- it's similar enough to SGE. But nowhere do I see anyone use -cwd or any equivalent in their slurm scripts. Either that is because you don't have to, or it's just an oversight in all of the examples that I've seen.

Learning by doing has also been an issue -- whenever I submit a test job it takes many, many hours before it's run. That's no way to learn.

Either way, it's time for me to become more familiar with slurm, so I've decided to set it up on a dedicated box.

I look at this post while setting it up: http://paolobertasi.wordpress.com/2011/05/24/how-to-install-slurm-on-debian/

NOTE: I set up a single node. This won't deal with getting nodes to communicate, configuring master and submit nodes, or anything lik that.

NOTE: the package slurm is a completely different program (network monitor). You need slurm-llnl

I also wonder whether the name has got anything to with this Slurm...

---

Installation

sudo apt-get install slurm-llnl

Setting up munge (0.5.10-1) ...
Not starting munge (no keys found). Please run /usr/sbin/create-munge-key
Setting up slurm-llnl-basic-plugins (2.3.4-2+b1) ...
Setting up slurm-llnl (2.3.4-2+b1) ...
Not starting slurm-llnl
slurm.conf was not found in /etc/slurm-llnl
Please follow the instructions in /usr/share/doc/slurm-llnl/README.Debian.gz

Open the local file file:///usr/share/doc/slurm-llnl/slurm-llnl-configurator.html in a web browser and fill out the form. I got the following slurm.conf, which I put in /etc/slurm-llnl/ 
slurm.conf

# slurm.conf file generated by configurator.html.
# Put this file on all nodes of your cluster.
# See the slurm.conf man page for more information.
#
ControlMachine=ecce64bit
#ControlAddr=
#BackupController=
#BackupAddr=
# 
AuthType=auth/munge
CacheGroups=0
#CheckpointType=checkpoint/none 
CryptoType=crypto/munge
#DisableRootJobs=NO 
#EnforcePartLimits=NO 
#Epilog=
#PrologSlurmctld= 
#FirstJobId=1 
JobCheckpointDir=/var/lib/slurm-llnl/checkpoint 
#JobCredentialPrivateKey=
#JobCredentialPublicCertificate=
#JobFileAppend=0 
#JobRequeue=1 
#KillOnBadExit=0 
#Licenses=foo*4,bar 
#MailProg=/usr/bin/mail 
#MaxJobCount=5000 
#MaxTasksPerNode=128 
MpiDefault=none
#MpiParams=ports=#-# 
#PluginDir= 
#PlugStackConfig= 
#PrivateData=jobs 
ProctrackType=proctrack/pgid
#Prolog=
#PrologSlurmctld= 
#PropagatePrioProcess=0 
#PropagateResourceLimits= 
#PropagateResourceLimitsExcept= 
ReturnToService=1
#SallocDefaultCommand= 
SlurmctldPidFile=/var/run/slurm-llnl/slurmctld.pid
SlurmctldPort=6817
SlurmdPidFile=/var/run/slurm-llnl/slurmd.pid
SlurmdPort=6818
SlurmdSpoolDir=/var/lib/slurm-llnl/slurmd
SlurmUser=verahill
#SrunEpilog=
#SrunProlog=
StateSaveLocation=/var/lib/slurm-llnl/slurmctld
SwitchType=switch/none
#TaskEpilog=
TaskPlugin=task/none
#TaskPluginParam=
#TaskProlog=
#TopologyPlugin=topology/tree 
#TmpFs=/tmp 
#TrackWCKey=no 
#TreeWidth= 
#UnkillableStepProgram= 
#UnkillableStepTimeout= 
#UsePAM=0 
# 
# 
# TIMERS 
#BatchStartTimeout=10 
#CompleteWait=0 
#EpilogMsgTime=2000 
#GetEnvTimeout=2 
#HealthCheckInterval=0 
#HealthCheckProgram= 
InactiveLimit=0
KillWait=30
#MessageTimeout=10 
#ResvOverRun=0 
MinJobAge=300
#OverTimeLimit=0 
SlurmctldTimeout=300
SlurmdTimeout=300
#UnkillableStepProgram= 
#UnkillableStepTimeout=60 
Waittime=0
# 
# 
# SCHEDULING 
#DefMemPerCPU=0 
#EnablePreemption=no 
FastSchedule=1
#MaxMemPerCPU=0 
#SchedulerRootFilter=1 
#SchedulerTimeSlice=30 
SchedulerType=sched/backfill
SchedulerPort=7321
SelectType=select/linear
#SelectTypeParameters=
# 
# 
# JOB PRIORITY 
#PriorityType=priority/basic 
#PriorityDecayHalfLife= 
#PriorityCalcPeriod= 
#PriorityFavorSmall= 
#PriorityMaxAge= 
#PriorityUsageResetPeriod= 
#PriorityWeightAge= 
#PriorityWeightFairshare= 
#PriorityWeightJobSize= 
#PriorityWeightPartition= 
#PriorityWeightQOS= 
# 
# 
# LOGGING AND ACCOUNTING 
#AccountingStorageEnforce=0 
#AccountingStorageHost=
#AccountingStorageLoc=
#AccountingStoragePass=
#AccountingStoragePort=
AccountingStorageType=accounting_storage/none
#AccountingStorageUser=
ClusterName=cluster
#DebugFlags= 
#JobCompHost=
#JobCompLoc=
#JobCompPass=
#JobCompPort=
JobCompType=jobcomp/none
#JobCompUser=
JobAcctGatherFrequency=30
JobAcctGatherType=jobacct_gather/none
SlurmctldDebug=3
SlurmctldLogFile=/var/log/slurm-llnl/slurmctld.log
SlurmdDebug=3
SlurmdLogFile=/var/log/slurm-llnl/slurmd.log
# 
# 
# POWER SAVE SUPPORT FOR IDLE NODES (optional) 
#SuspendProgram= 
#ResumeProgram= 
#SuspendTimeout= 
#ResumeTimeout= 
#ResumeRate= 
#SuspendExcNodes= 
#SuspendExcParts= 
#SuspendRate= 
#SuspendTime= 
# 
# 
# COMPUTE NODES 
NodeName=ecce64bit Procs=1 State=UNKNOWN 
PartitionName=debug Nodes=ecce64bit Default=YES MaxTime=INFINITE State=UP

sudo /usr/sbin/create-munge-key
sudo service slurm-llnl start
[ ok ] Starting slurm central management daemon: slurmctld.
[ ok ] Starting slurm compute node daemon: slurmd.
sudo service munge start
[ ok ] Starting MUNGE: munged.

At that point I tried sinfo, squeue etc., none of which returned anything other than a connection error:

squeue

slurm_load_jobs error: Unable to contact slurm controller (connect failure)

sinfo

slurm_load_partitions: Unable to contact slurm controller (connect failure)

So I rebooted. Which had no effect.The log file /var/log/slurm-llnl/slurmctld.log contains

fatal: Incorrect permissions on state save loc: /var/lib/slurm-llnl/slurmctld

verahill@ecce64bit:~$ sudo chown verahill /var/lib/slurm-llnl/slurmctld
verahill@ecce64bit:~$ sudo service slurm-llnl restart

[ ok ] Stopping slurm central management daemon: slurmctld.
No /usr/sbin/slurmctld found running; none killed.
[ ok ] Stopping slurm compute node daemon: slurmd.
No /usr/sbin/slurmd found running; none killed.
slurmd dead but pid file exists
[ ok ] Starting slurm central management daemon: slurmctld.
[ ok ] Starting slurm compute node daemon: slurmd.
verahill@ecce64bit:~$ ps aux|grep slurm

verahill  3790  0.0  0.2 116164  2292 ?        Sl   21:12   0:00 /usr/sbin/slurmctld
root      3829  0.0  0.1  95064  1380 ?        S    21:12   0:00 /usr/sbin/slurmd

verahill@ecce64bit:~$ squeue

JOBID PARTITION     NAME     USER  ST       TIME  NODES NODELIST(REASON)
verahill@ecce64bit:~$ sinfo

PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST
debug*       up   infinite      1   idle ecce64bit

---

Testing

verahill@ecce64bit:~$ srun --ntasks=1  --label /bin/hostname && pwd && whoami

0: ecce64bit
/home/verahill
verahill

Time to write a simple queue script:
job.slurm

#!/bin/bash
#SBATCH -J pbe_delta       # Job name
#SBATCH -o pbe_delta.o%j   # Name of stdout output file(%j expands to jobId)
#SBATCH -e pbe_delta.o%j   # Name of stderr output file(%j expands to jobId)
#SBATCH -N 1                # Total number of nodes requested (16 cores/node)
#SBATCH -n 1
#SBATCH -t 48:00:00         # Run time (hh:mm:ss) 

date> output.out
pwd >> output.out
hostname >> output.out
ls -lah

I submitted it using

sbatch job.slurm

and on running it gives two output files:
output.out

Fri Mar 14 17:16:10 EST 2014
/home/verahill/slurm/test
Ecce64bit

and pbe_delta.o4

total 16K
drwxr-xr-x 2 verahill verahill 4.0K Mar 14 17:16 .
drwxr-xr-x 3 verahill verahill 4.0K Mar 14 17:14 ..
-rw-r--r-- 1 verahill verahill  491 Mar 14 17:16 job.slurm
-rw-r--r-- 1 verahill verahill   59 Mar 14 17:16 output.out
-rw-r--r-- 1 verahill verahill    0 Mar 14 17:15 pbe_delta.o3
-rw-r--r-- 1 verahill verahill    0 Mar 14 17:16 pbe_delta.o4