MPI_Neighbor_allgatherv 45 ompi/mpi/c/neighbor_allgatherv.c #define MPI_Neighbor_allgatherv PMPI_Neighbor_allgatherv MPI_Neighbor_allgatherv 51 ompi/mpi/c/neighbor_allgatherv.c int MPI_Neighbor_allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype,