Dr. David Cronk Innovative Computing Lab University of ... - It works!
Dr. David Cronk Innovative Computing Lab University of ... - It works!
Dr. David Cronk Innovative Computing Lab University of ... - It works!
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Non-blocking Communication<br />
100 continue<br />
…….<br />
J = 0<br />
do I = 0, npes<br />
if (I .ne. myrank)<br />
J = J+1<br />
set up data to send<br />
call MPI_ISEND (sdata(I), cnt, dtype, &<br />
I, tag, comm, request(J), ierr)<br />
endif<br />
enddo<br />
call MPI_WAITALL (npes-1, request,<br />
&<br />
………<br />
receive data<br />
………..<br />
Unsafe again<br />
statuses, ierr)<br />
100 continue<br />
………..<br />
J = 0<br />
do I = 0, npes<br />
if (I .ne. myrank)<br />
J = J+1<br />
set up data to send<br />
call MPI_ISEND (sdata(I), cnt, dtype, &<br />
I, tag, comm, request(J), ierr)<br />
endif<br />
enddo<br />
…………<br />
receive data<br />
………….<br />
call MPI_WAITALL (npes-1, request,<br />
&<br />
statuses, ierr)<br />
Safe…….but<br />
<strong>David</strong> <strong>Cronk</strong> 70
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