Jeff Hammond <jeff.scie...@gmail.com> writes: >> By the way, is it expected that binding will be slow on it? hwloc-bind >> is ~10 times slower (~1s) than on two-socket sandybridge, and ~3 times >> slower than on a 128-core, 16-socket system. >> >> Is this a bottleneck in any application? Are there codes bindings memory > frequently?
As Brice pointed out, I was stupidly confusing discovery and binding, but there are cases where a second to do the discovery could be significant, even if I might not consider them too sensible. > Because most things inside the kernel are limited by single-threaded > performance, it is reasonable for them to be slower than on a Xeon > processor, but I've not seen slowdowns that high. > > Jeff Yes. Actually I was originally comparing with a slower 64-core Interlagos, but that was with an older hwloc. _______________________________________________ hwloc-users mailing list hwloc-users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/hwloc-users
