On Jan 7, 2013, at 9:05 AM, Samuel Thibault <samuel.thiba...@inria.fr> wrote:
> HWLOC_COMPONENTS=^cuda,opencl > > disables cuda *and* opencl, while intuition would have told me that it > disables cuda but enables opencl. > > Also, one would for instance want to be able to do this: > > HWLOC_COMPONENTS=x86,^cuda,^opencl,nvml (Sorry -- am just returning today from winter vacation...) FWIW: in OMPI, way back when we implemented this, we considered supporting what you describe. But then we thought -- wait, why would I ever do that? More specifically: you only ever want to specify exactly what you *do* or *do not* want to be loaded. Why would you ever list both? Taking your example: HWLOC_COMPONENTS=foo,^bar,^baz,^yow Is the same as: HWLOC_COMPONENTS=foo,yow So why bother listing ^bar and ^baz? Generalizing that, why would you ever specify *some* components to exclude and *some* components to exclude? It seems much cleaner to either exclude some (and therefore include the rest), or include some (and exclude the rest). -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
