I know the standard, but what if I can not bypass the send message. For example if I have MPI_Iscatter and for some ranks the send buffer has zero size. At those ranks it will jump the MPI_Iscatter routine, which means I have some zero size send and no receive.
On Wed, Jul 16, 2014 at 3:28 PM, Matthieu Brucher < matthieu.bruc...@gmail.com> wrote: > Hi, > > The easiest would also to bypass the Isend as well! The standard is > clear, you need a pair of Isend/Irecv. > > Cheers, > > 2014-07-16 14:27 GMT+01:00 Ziv Aginsky <zivagin...@gmail.com>: > > I have a loop in which I will do some MPI_Isend. According to the MPI > > standard, for every send you need a recv!!!! > > > > If one or several of my MPI_Isend have zero size buffer, should I still > have > > the mpi_recv or I can do it without recv? I mean on the processor which I > > should recv the data I know priory that my buffer is with zero size. Can > I > > jump from MPI_Recv. > > > > The question is because of the format of the program I am using if it > knows > > that the receiving buffer is zero it will not call the routine which > > contains mpi_Recv. > > > > > > > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org > > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > > Link to this post: > > http://www.open-mpi.org/community/lists/users/2014/07/24781.php > > > > -- > Information System Engineer, Ph.D. > Blog: http://matt.eifelle.com > LinkedIn: http://www.linkedin.com/in/matthieubrucher > Music band: http://liliejay.com/ > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2014/07/24782.php >
