A little more color on Gilles' answer: I believe that we had some Open MPI community members work on adding M1 support to Open MPI, but Gilles is absolutely correct: the underlying compiler has to support the M1, or you won't get anywhere.
-- Jeff Squyres jsquy...@cisco.com ________________________________________ From: users <users-boun...@lists.open-mpi.org> on behalf of Cici Feng via users <users@lists.open-mpi.org> Sent: Thursday, April 21, 2022 6:11 AM To: Open MPI Users Cc: Cici Feng Subject: Re: [OMPI users] help with M1 chip macOS openMPI installation Gilles, Thank you so much for the quick response! openMPI installed by brew is compiled on gcc and gfortran using the original compilers by Apple. Now I haven't figured out how to use this gcc openMPI for the inversion software :( Given by your answer, I think I'll pause for now with the M1-intel compilers-openMPI route and switch to an intel cluster until someone figured out the M1 chip problem ~ Thanks again for your help! Cici On Thu, Apr 21, 2022 at 5:59 PM Gilles Gouaillardet via users <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: Cici, I do not think the Intel C compiler is able to generate native code for the M1 (aarch64). The best case scenario is it would generate code for x86_64 and then Rosetta would be used to translate it to aarch64 code, and this is a very downgraded solution. So if you really want to stick to the Intel compiler, I strongly encourage you to run on Intel/AMD processors. Otherwise, use a native compiler for aarch64, and in this case, brew is not a bad option. Cheers, Gilles On Thu, Apr 21, 2022 at 6:36 PM Cici Feng via users <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: Hi there, I am trying to install an electromagnetic inversion software (MARE2DEM) of which the intel C compilers and open-MPI are considered as the prerequisite. However, since I am completely new to computer science and coding, together with some of the technical issues of the computer I am building all this on, I have encountered some questions with the whole process. The computer I am working on is a macbook pro with a M1 Max chip. Despite how my friends have discouraged me to keep working on my M1 laptop, I still want to reach out to the developers since I feel like you guys might have a solution. By downloading the source code of openMPI on the .org website and "sudo configure and make all install", I was not able to install the openMPI onto my computer. The error provided mentioned something about the chip is not supported or somewhat. I have also tried to install openMPI through homebrew using the command "brew install openmpi" and it worked just fine. However, since Homebrew has automatically set up the configuration of openMPI (it uses gcc and gfortran), I was not able to use my intel compilers to build openMPI which causes further problems in the installation of my inversion software. In conclusion, I think right now the M1 chip is the biggest problem of the whole installation process yet I think you guys might have some solution for the installation. I would assume that Apple is switching all of its chip to M1 which makes the shifts and changes inevitable. I would really like to hear from you with the solution of installing openMPI on a M1-chip macbook and I would like to thank for your time to read my prolong email. Thank you very much. Sincerely, Cici
