Re: [OMPI users] Problems with computation-communication overlap in non-blocking mode

l" message -- meaning that they would be sent eagerly, and not via a rendezvous protocol (and therefore you have a much better changes of MPI_Isend/MPI_Wait doing more of what you expect). But this tends to consume more buffering at the receiver. Make sense? On Mar 7, 2014, at 9:49 AM, Veli

[OMPI users] Problems with computation-communication overlap in non-blocking mode

Dear all, I have a simple MPI program with two processes using non-blocking communication illustrated bellow: process 0: process 1: MPI_Isend MPI_Irecv compute stage compute stage MPI_Wait MPI_Wait Actual communication is performed by offloading it to another thre