[slurm-users] Running an MPI job across two partitions

Chris Samuel chris at csamuel.org
Wed Mar 25 05:46:38 UTC 2020

On 23/3/20 8:32 am, CB wrote:

> I've looked at the heterogeneous job support but it creates two-separate 
> jobs.

Yes, but the web page does say:

# By default, the applications launched by a single execution of
# the srun command (even for different components of the
# heterogeneous job) are combined into one MPI_COMM_WORLD with
# non-overlapping task IDs.

So it _should_ work.

I know there are issues with Cray systems & hetjobs at the moment, but I 
suspect that's not likely to concern you.

All the best,
  Chris Samuel  :  http://www.csamuel.org/  :  Berkeley, CA, USA

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