Hi Nathan, > This is not a configuration issue. On 1.8.x and master we use two-sided > communication to emulation one-sided. Since we do not currently have > async progress this requires the target to call into MPI to progress RMA > communication.
thanks for the clarification. Is there special handling for intra-node locks (through shared memory?) or does the same restriction apply here as well? > This will change in 2.x. I will be adding a new component that does > real RMA on supported networks (ib, gemini, aries). At some point we > will also have support for async progress which will enable > passive-target on other networks. That sounds great. :-D Cheers, Marc-Andre > > -Nathan > > On Sun, Jun 28, 2015 at 11:19:43AM +0200, Marc-Andre Hermanns wrote: >> Dear all, >> >> I am currently investigating a microbenchmark with Open MPI 1.8.3 on >> Infiniband and was wondering whether Open MPI provides target-side >> progress for incoming lock requests. >> >> It seems lock requests are only handled if the target calls into the >> MPI API and I was wondering if that is a configuration issue (and I >> have to set some runtime variable) or if it is the general case. >> >> Cheers, >> Marc-Andre >> -- >> Marc-Andre Hermanns >> Jülich Aachen Research Alliance, >> High Performance Computing (JARA-HPC) >> German Research School for Simulation Sciences GmbH >> >> Schinkelstrasse 2 >> 52062 Aachen >> Germany >> >> Phone: +49 2461 61 2509 >> Fax: +49 241 80 6 99753 >> www.grs-sim.de/parallel >> email: m.a.herma...@grs-sim.de >> > > > >> _______________________________________________ >> 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/2015/06/27206.php > > _______________________________________________ > 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/2015/06/27210.php > -- Marc-Andre Hermanns Jülich Aachen Research Alliance, High Performance Computing (JARA-HPC) German Research School for Simulation Sciences GmbH Schinkelstrasse 2 52062 Aachen Germany Phone: +49 2461 61 2509 Fax: +49 241 80 6 99753 www.grs-sim.de/parallel email: m.a.herma...@grs-sim.de
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