[Openmp-commits] [PATCH] D13991: Adding Hwloc library option for affinity mechanism.

hfinkel@anl.gov via Openmp-commits openmp-commits at lists.llvm.org
Tue Oct 27 13:02:56 PDT 2015

hfinkel added a comment.

In http://reviews.llvm.org/D13991#276574, @brianbliss wrote:

> There are some very subtle details with the way that the cpuid HW topology detection mechanism works that I've spent years hammering out, and hwloc has the same bugs as the Intel runtime affinity mechanism had in 2006.  We aren't ready to switch to hwloc as a default, and I don't want to see the LLVM version of libiomp5 diverge from the Intel version WRT thread affinity...

In that case, it seems like this option should carry a very stern *EXPERIMENTAL* warning.

Will we be able to enable affinity support by default for all targets when hwloc is in use?

> -bb



More information about the Openmp-commits mailing list