Hello, I am running mpi code on host1(quad core) and host2(dual core) mpiexec -hosts host1,host2 -n 6 ./mytask I want to assign 4 processes for host1 and 2 for host2. I tried --map-by core but I found that the processes are distributed 3 for each. Regards Doha _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss