Intel mpirun interpreting process count incorrectly in Slurm

Intel mpirun interpreting process count incorrectly in Slurm

mpirun launches only a maximum 8 processes per node, on a node that has 12 cores.I suspect this is a result of misinterpretation of the processor count from the slurm environmentor some kind of limitation enforced by mpirun.Intel MPI version:4.0.3.008Slurm version : 2.2.4Nodes have Intel Xeon CPU X5650 @ 2.67Ghz (12 cores)1. Request resources via slurm. salloc -n 24 The resources are allocated properly. echo $SLURM_NNODES 2 echo $SLURM_JOB_NUM_NODES 2 echo $SLURM_NPROCS 24 echo $SLURM_TASKS_PER_NODE 12(x2) echo #SLURM_JOB_NODELIST node[049-050]2. Run mpi job mpirun ./intelmpijobThis lauches 8 processes pernode (total of 16).Any quick response will be greatly appreciated.

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Dear martijn@clustervision.com,

Thank you forthe post.

Please try to run your job with

mpiexec.hydra -bootstrap=slurm ./intelmpijob

Best regards,
Dmitry

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