FWIW, we didn't talk too much about the internals of Open MPI -- but it's a good place to start (i.e., you won't understand the internals until you understand the externals).
You can find all the videos and slides for all 3 parts here: https://www.open-mpi.org/video/?category=general In additional, there's a now-several-years-old set of videos on the internals here: https://www.open-mpi.org/video/?category=internals Some of that information is dated, but the broad strokes are still very relevant. On Aug 6, 2020, at 7:13 AM, Oddo Da via users <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: Thank you! On Thu, Aug 6, 2020 at 5:26 AM Gilles Gouaillardet via users <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: You can start with the recent talks given by Jeff Squyres and Ralph Castain for Easybuild EasyBuild Tech Talk I - The ABCs of Open MPI, part 1 (by Jeff Squyres & Ralph Castain) https://www.youtube.com/watch?v=WpVbcYnFJmQ (there are three parts) Then the source code and interacting with the developers via github and/or the devel mailing list Cheers, Gilles On Thu, Aug 6, 2020 at 5:47 PM Oddo Da via users <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: > > On Wed, Aug 5, 2020 at 11:06 PM Gilles Gouaillardet via users > <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: >> >> Assuming you want to learn about MPI (and not the Open MPI internals), >> the books by Bill Gropp et al. are the reference : >> https://www.mcs.anl.gov/research/projects/mpi/usingmpi/ >> >> (Using MPI 3rd edition is affordable on amazon) > > > Thanks! Yes, this is what I was after. However, if I wanted to learn about > OpenMPI internals, what would be the go-to resource? -- Jeff Squyres jsquy...@cisco.com<mailto:jsquy...@cisco.com>