Assuming you want your srun pairs to run each on its own node, something like
this should work as well:
#!/bin/bash
#SBATCH -N2
declare -i count=5
for (( i=1 ; i <= $count; i++ ))
do
srun -N1 -n1 -r0 a.out &
srun -N1 -n1 -r1 a.out &
wait
done
> -----Original Message-----
> From: Moe Jette [mailto:[email protected]]
> Sent: Thursday, June 06, 2013 8:40 AM
> To: slurm-dev
> Subject: [slurm-dev] Re: correct formatting for sbatch jobs
>
>
> Perhaps what you want is the srun --exclusive option and running the
> srun commands in the background.
>
> Slurm v2.6 has native job array support.
>
> Quoting "Alan V. Cowles" <[email protected]>:
>
> >
> > Hey guys,
> >
> > We are new to slurm, hoping to use some of it's advanced parallel
> > features over what is offered in older versions of SGE.
> >
> > We have written various sbatch scripts to test out methods of submitting
> > jobs, and we are not finding a way to have it perform as intended.
> >
> > We have spent many hours looking over the man pages and resubmitting
> > jobs but haven't found one that works just yet so I'm hoping another
> > user can help us out.
> >
> > Here is a simple example what we are attempting to do:
> >
> > We have an sbatch script that in turn should call out 10 consecutive
> > srun commands.
> >
> > We have it spread across 2 nodes of our cluster with -N 2, and what we
> > would like is for srun1,srun2 to run at the same time, then 3,4 once the
> > first two are finished, and so on until all 10 jobs are finished.
> >
> > What we are finding is that the first srun is running in parallel on 2
> > nodes, then it's proceeding to the next sequentially, until it finishes
> > all 10. Obviously this is not ideal.
> >
> > We have looked into the options for -n, -c, and haven't found either to
> > do what we were expecting just extrapolate out the running of each srun
> > to multiple cores/machines.
> >
> > One workaround we have found is to just submit all 10 jobs as separate
> > srun commands. This works in theory until the we try to scale up to say
> > 200 jobs, we run out of available slots, and with srun, jobs will
> > terminate without available slots to receive them, which is why we
> > really want to get this running as intended in an sbatch.
> >
> > Any help that can be provided in how to correctly modify the sbatch
> > script would be most helpful.
> >
> > Thanks in advance.
> >
> > Alan Cowles
> >
