update hwloc included tarball to 2.0.1

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Issue #2313 resolved
Roland Haas created an issue

hwloc currently includes hwloc 1.11.12 from Dec 13, 2018 which is the “ultrastable” branch: https://www.open-mpi.org/software/hwloc/v1.11/

The MPI external library on the other hand includes version 2.0.1 as in its sources, and some package managers (homebrew, Debian) have updated to a 2.X version (stable).

Thus it may be good to update the included tarball to the same version (which the ExternalLibrary will then use when it is being compiled). This will break some thorns that use hwloc since 2.X is not API compatible with 1.X. The ET’s thorns support both versions of hwloc.

Comments (7)

  1. Erik Schnetter

    I agree with this change, e.g. MPICH has hwloc 2.0.x built-in as well.

    I would use a later version of hwloc, e.g. 2.0.4. Presumably patch upgrades will only correct errors, which seems a good thing.

  2. Roland Haas reporter
    • changed status to open

    it turns out SystemTopology failed with 2.0.X due to (likely) and incorrect assumption about how caches are "included" in each other. #2314 proposes to backport to fix to the release branch (Mayer). Master has been fixed already in git hash aacb23f "SystemTopology: list expected cache types instead of range checking" of cactusutils.

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