* Author: MPICH / slightly modified by Ahmad Faraj.
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* Author: MPICH / slightly modified by Ahmad Faraj.
****************************************************************************/
int alltoall__rdb(const void *send_buff, int send_count,
MPI_Datatype send_type,
void *recv_buff, int recv_count,
int alltoall__rdb(const void *send_buff, int send_count,
MPI_Datatype send_type,
void *recv_buff, int recv_count,