mpirun takes the #slots for each node from the slurm allocation. Your hostfile (at least, what you provided) retained that information and shows 2 slots on each node. So both the original allocation _and_ your constructed hostfile are both telling mpirun to assign 2 slots on each node.
Like I said before, on this old version, -H doesn’t say anything about #slots - that information is coming solely from the original allocation and your hostfile. > On May 17, 2018, at 5:11 AM, Nicolas Deladerriere > <nicolas.deladerri...@gmail.com> wrote: > > About "-H" option and using --bynode option: > > In my case, I do not specify number of slots by node to openmpi (see mpirun > command just above). From what I see the only place I define number of slots > in this case is actually through SLURM configuration > (SLURM_JOB_CPUS_PER_NODE=4(x3)). And I was not expected this to be taken when > running mpi processes. > > Using --bynode is probably the easiest solution in my case, even if I am > scared that it will not necessary fit all my running configuration. Better > solution would be to review my management script for better integration with > slurm resources manager, but this is another story.
_______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
