MPI_Neighbor_alltoall 43 ompi/mpi/c/neighbor_alltoall.c #define MPI_Neighbor_alltoall PMPI_Neighbor_alltoall MPI_Neighbor_alltoall 49 ompi/mpi/c/neighbor_alltoall.c int MPI_Neighbor_alltoall(const void *sendbuf, int sendcount, MPI_Datatype sendtype,