>> But I can't see a binding by core for number of processes <= 2. Does it mean >> 2 per node or 2 overall for the `mpiexec`? > > It’s 2 processes overall
Having a round-robin allocation in the cluster, this might not be what was intended (to bind only one or two cores per exechost)? Obviously the default changes (from --bind-to core to --bin-to socket), whether I compiled Open MPI with or w/o libnuma (I wanted to get rid of the warning in the output only – now it works). But "--bind-to core" I could also use w/o libnuma and it worked, I got only that warning in addition about the memory couldn't be bound. BTW: I always had to use -ldl when using `mpicc`. Now, that I compiled in libnuma, this necessity is gone. -- Reuti _______________________________________________ users mailing list users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/users
