Sergey, We have answered to your similar questions on mvapich-discuss list. Below is a copy of the reply.
Matt *** Messages are sent based on LIDs and QPs. Right now there is no mechanism to set output LIDs directly. If you use the VIADEV_USE_LMC=1 (MVAPICH) or MV2_USE_HSAM=1 (MVAPICH2) it should try to spread traffic for you to maximize performance. What is the reason for needing this fine-grained control? Thanks, Matt On Sat, 7 Mar 2009, Sergey wrote: > Hi, > Sorry to my english > May be anybody know about this ? > How mpi process addressing the message to destination (rank 0 send rank > 1)? Through LID, GID, QP ID or anything else? Where from mpi sender to know > destination LID ? > Can I strictly define outgoing LIDs for specific mpi process ? > For example, with LMC = 3, a sender: rank 0, lid 1 communicate with rank 1 > and rank 2 > I want strictly define using multilid 4 for sending rank 0 to rank 1 > (multilid 4 = DestLID for rank0 -> rank1) > Thanks for all > With best regards > > > > > _______________________________________________ > general mailing list > [email protected] > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general > _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
