Hello, As explained in another mail, this yet another buggy AMD L3 cache information reported by the hardware. The only way to *fix* this is to tell your machine vendor to fix the L3 cache information.
The only thing we can do is remove the hwloc warning (if you don't care about cache or NUMA affinity for placing your MPI jobs) by setting HWLOC_HIDE_ERRORS=1 in the environment, or tell hwloc/OMPI how to workaround the BIOS issue (if you care about cache or NUMA affinity) by generating a correct XML topology file. Brice Le 20/12/2014 19:15, Sergio Manzetti a écrit : > > Dear all, I have an AMD Opteron 24 core system which is not compatible > with hwloc, and gives repeated error. > > **************************************************************************** > * hwloc has encountered what looks like an error from the operating system. > * > * L3 (cpuset 0x000003f0) intersects with NUMANode (P#0 cpuset 0x0000003f) > without inclusion! > * Error occurred in topology.c line 940 > * > * Please report this error message to the hwloc user's mailing list, > * along with the output from the hwloc-gather-topology script. > **************************************************************************** > > > The attachment shows this report, which indicates that hwloc is unable to > count the correct number of CPUs, siblings etc. It identifies 21 instead of > 24. > > > Please advise, and is there an alternative to this which is free? > > Thanks > > > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users > Link to this post: > http://www.open-mpi.org/community/lists/hwloc-users/2014/12/1138.php
