Selective MPI process placements on processors

Hello,

I am looking for a way to place some selected MPI process ranks (MPI_COMM_WORLD ranks) on different sockets of the nodes.

For example, if I have 4 MPI processes say 0,1,2,3. And, I have two nodes each having 2 sockets. Is there any way I can specify that the processes 0 and 4 be on two different sockets of node 1, and similarly processes 1 and 3 be on node 2?

Basically, I am looking for an equivalent to 'rankfile' of Open MPI on Intel MPI.

I hope I am clear enough.

Regards,

Vineet