amjad ali wrote:First of all, it really is good form to post receives as early as possible.
Please tell me that if have multiple such ISEND-RECV squrntially for sending receiving data then DO we need to declare separate status(MPI_STATUS_SIZE) with for example status1, status2, ....; or a single declaration of it will work for all??
Anyhow, when you have multiple requests being completed at once, you need more than one status. So, you declare an array of statuses. Check the man page for MPI_Waitall. E.g.,
DO I = 1, M
CALL MPI_IRECV(BUF?, COUNT?, DATATYPE?, SOURCE?, TAG?, COMM?, REQS(I), IER)
DO I = 1, N
CALL MPI_SEND(BUF?, COUNT?, DATATYPE?, DEST?, TAG?, COMM?, IER)
CALL MPI_WAITALL(M, REQS, STATS, IER)
If you don't care about the statuses, don't declare STATS and just use
users mailing list