Hello This message is related to /var/cache/hwloc/knl_memoryside_cache. This file exposes the KNL cluster and MCDRAM configuration, only accessible from root-only files. hwloc-dump-hwdata runs at boot time to create that file, and non-root hwloc users can read it later. Failing to read that file basically means that hwloc won't be able to expose MCDRAM *cache* information.
Intel had to change the file format in hwloc 1.11.4 to expose more info. Earlier releases cannot read it unfortunately. So the error means that your OMPI uses a hwloc 1.11.[23] while the above file was dumped by hwloc >= 1.11.4 running in a boot-time service. I thought we changed that warning to verbose-only, but looks like we didn't. There's no human intervention after you subscribe on https://lists.open-mpi.org/mailman/listinfo/hwloc-users. I don't see you on the current members. Brice Le 01/09/2017 18:26, Howard Pritchard a écrit : > Hi Folks, > > I just now subscribed to the hwloc user mail list, but I suspect that > requires human intervention to get on, and that might not mean > something happening till next week. > > Alas google has failed me in helping to understand the message. > > So, I decided to post to Open MPI devel list and see if I get a response. > > Here's what I see with with Open MPI 2.1.1: > > srun -n 4 ./hello_c > > Invalid knl_memoryside_cache header, expected "version: 1". > > Invalid knl_memoryside_cache header, expected "version: 1". > > Invalid knl_memoryside_cache header, expected "version: 1". > > Invalid knl_memoryside_cache header, expected "version: 1". > > Hello, world, I am 0 of 4, (Open MPI v2.1.1rc1, package: Open MPI > dshrader@tt-fey1 Distribution, ident: 2.1.1rc1, repo rev: > v2.1.1-4-g5ded3a2d, Unreleased developer copy, 142) > > Hello, world, I am 1 of 4, (Open MPI v2.1.1rc1, package: Open MPI > dshrader@tt-fey1 Distribution, ident: 2.1.1rc1, repo rev: > v2.1.1-4-g5ded3a2d, Unreleased developer copy, 142) > > Hello, world, I am 2 of 4, (Open MPI v2.1.1rc1, package: Open MPI > dshrader@tt-fey1 Distribution, ident: 2.1.1rc1, repo rev: > v2.1.1-4-g5ded3a2d, Unreleased developer copy, 142) > > Hello, world, I am 3 of 4, (Open MPI v2.1.1rc1, package: Open MPI > dshrader@tt-fey1 Distribution, ident: 2.1.1rc1, repo rev: > v2.1.1-4-g5ded3a2d, Unreleased developer copy, 142) > > Anyone know what might be causing hwloc to report this invalid > knl_memoryside_cache header thingy? > > Thanks for any help, > > Howard > > > > > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/devel
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