Hi Bjørn, Thank you very much for your help. That's right, we use IntelMPI.
At the moment, we are telling users to ignore the warning. But we think it's a Slurm bug, so we've reported it, in case the developers want to take a look at it. Regards, Ginés El mié, 17 nov 2021 a las 5:13, Bjørn-Helge Mevik (<b.h.me...@usit.uio.no>) escribió: > > Ginés Guerrero <gguerr...@nlhpc.cl> writes: > > > Hi, > > > > If I submit this script: > > > > #!/bin/bash > > #SBATCH --get-user-env > > #SBATCH -p slims > > #SBATCH -N 2 > > #SBATCH -n 40 > > #SBATCH --ntasks-per-node=20 > > #SBATCH -o log > > #SBATCH -e log > > > > /bin/env > > > > srun hostname > > > > I get the warning: “can't honor --ntasks-per-node set to 20 which > > doesn't match the requested tasks 40 with the number of requested > > nodes 1. Ignoring –ntasks-per-node”. > > Are you using IntelMPI? I've seen this type of warning in some > situations with IntelMPI. In all our cases, "srun hostname" or "mpirun > hostname" shows that it *does* honor --ntasks-per-node. (So we > generally just ask our users to check with "srun hostname", and ignore > the warning if it works as expected.) > > -- > Regards, > Bjørn-Helge Mevik, dr. scient, > Department for Research Computing, University of Oslo >
