[slurm-users] allocate last MPI-rank to an exclusive node?
gongjing at kth.se
Mon Feb 18 22:15:35 UTC 2019
I am just wondering if there are any srun flags to
allocate the last MPI-rank to an exclusive node, for example,
#SBATCH -N 3 # 3 nodes
#SBATCH --cpu-per-task=1 # 10 MPI-rank per node
srun -n 21 ... ./application # MPI-rank 0-9 on node 0; MPI-rank 10-19 on node 1; MPI-rank 20 on node 2 !?
For my case, the last MPI-rank is consider as master and it takes much memory. So it would be better if the last MPI-rank can be distributed on an exclusive node . I have tried all distribution patterns introduced in
but it seems to me that all patterns allocate MPI-rank equivalently into nodes.
Regards, Jing Gong
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