The answer is: ...it's complicated. :-) There's unfortunately no real documentation available on the internal code structure. IIRC (and it's been literally *years* since I've looked in the openib BTL) it uses both send-receive and RDMA, depending on the situation.
Your best bet would be to dig into the code a bit and then come back here and ask some specific questions. > On Oct 5, 2016, at 9:10 AM, Gianmario Pozzi <pozzigma...@gmail.com> wrote: > > Hi everybody. > > My friend Federico Reghenzani and I implemented a framework (MIG) to manage > MPI processes migration from one node to another, given that BTL only uses > TCP to communicate. The work was presented at Euro MPI in Edinburgh this > September. > > Now, for my Master Thesis, I need to make MIG capable of working also with > InfiniBand-based BTL. > Is there anyone who could help me to better understand how it works? It looks > way more complex than TCP. > Does it use only RDMA? If not, what else? > > Any hint is appreciated. > > Thank you guys, have a nice day. > > -- > Gianmario Pozzi > M.Sc. @ Politecnico di Milano > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/devel -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ _______________________________________________ devel mailing list devel@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/devel
