MPI_Comm_dup instead of MPI_Comm_split

ghex-org / GHEX

Generic exascale-ready library for halo-exchange operations on variety of grids/meshes

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MPI_Comm_dup instead of MPI_Comm_split #61

Closed bettiolm closed 4 years ago

bettiolm commented 4 years ago

This change is due to a segmentation fault caused by the call to MPI_Comm_split(). This call should do what is intended, avoiding MPI_Comm_split().