This is necessary in cases when ghex is initialized with a communicator with remapped ranks (e.g., hwcart). In that case PMIx has the same numbering as MPI_COMM_WORLD, but GHEX is using different rank numbers that come from the renumbered communicator. To use PMIx those need to be remapped.
This is necessary in cases when ghex is initialized with a communicator with remapped ranks (e.g., hwcart). In that case PMIx has the same numbering as MPI_COMM_WORLD, but GHEX is using different rank numbers that come from the renumbered communicator. To use PMIx those need to be remapped.