> Quoting Jeff Squyres <[EMAIL PROTECTED]>: > Subject: Re: [ewg] Re: [OMPI devel] Re: OMPI over ofed?udapl -?bugs?opened > > On May 10, 2007, at 10:28 AM, Michael S. Tsirkin wrote: > > >>What is the advantage of this approach? > > > >Current ipoib cm uses this approach to simplify the implementation. > >Overhead seems insignificant. > > I think MPI's requirements are a bit different than IPoIB. See > Gleb's response. It is not uncommon for MPI apps to have connections > open to many peers simultaneously.
You mean, hundreds of QPs between the same pair of hosts? Yes, in this case you might start running out of QPs. > Registered memory / internal > buffering usage is a Big Deal in the MPI / HPC community. I don't see the connection with the # of QPs. They are very cheap in memory. -- MST _______________________________________________ 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
