Dear all,
I am currently using the MPI distributed graph topologies and I allow rank reordering (https://www.mpi-forum.org/docs/mpi-3.1/mpi31-report/node195.htm#Node195).
However, after small tests, I noticed that the Intel MPI (2019) does not reorder my ranks.
Since it increases the complexity of the code, I would like to be sure that in some cases it will be useful.
Does Intel MPI reorder the ranks for MPI topologies? If yes, what are the requirements (machine files etc...)?
Thank you very much for your help!