[slurm-users] Job Step Resource Requests are Ignored
chris at csamuel.org
Wed May 6 05:27:20 UTC 2020
On Tuesday, 5 May 2020 4:47:12 PM PDT Maria Semple wrote:
> I'd like to set different resource limits for different steps of my job. A
> sample script might look like this (e.g. job.sh):
> srun --cpus-per-task=1 --mem=1 echo "Starting..."
> srun --cpus-per-task=4 --mem=250 --exclusive <do something complicated>
> srun --cpus-per-task=1 --mem=1 echo "Finished."
> Then I would run the script from the command line using the following
> command: sbatch --ntasks=1 job.sh.
You shouldn't ask for more resources with "srun" than have been allocated with
"sbatch" - so if you want the job to be able to use up to 4 cores at once &
that amount of memory you'll need to use:
sbatch -c 4 --mem=250 --ntasks=1 job.sh
I'd also suggest using suffixes for memory to disambiguate the values.
All the best,
Chris Samuel : http://www.csamuel.org/ : Berkeley, CA, USA
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