Hi Hendryk, Thanks for information.
The 'plane' distribution works fine with me as well. Regards, Jing Gong ________________________________________ From: slurm-users <slurm-users-boun...@lists.schedmd.com> on behalf of Hendryk Bockelmann <bockelm...@dkrz.de> Sent: Tuesday, February 19, 2019 10:48 To: slurm-users@lists.schedmd.com Subject: Re: [slurm-users] allocate last MPI-rank to an exclusive node? Hi, we had the same issue and solved it by using the 'plane' distribution in combination with MPMD style srun, e.g. in your example #SBATCH -N 3 # 3 nodes with 10 cores each #SBATCH -n 21 # 21 MPI-tasks in sum #SBATCH --cpus-per-task=1 # if you do not want hyperthreading cat > mpmd.conf << EOF 0-19 ./slave_app 20 ./master_app EOF srun--distribution=plane=10 --multi-prog mpmd.conf More examples are given here: https://slurm.schedmd.com/dist_plane.html Best regards, Hendryk
