The short answer to this may be that my Nvidia driver is too old. My Nvidia card is old so I have to use the version 173 proprietary driver on it, but the latest nouveau driver works fine.
I'm on Fedora 18, testing hwloc-1.7. I fetched and built the latest libXNVCtrl, 319.17, from ftp://download.nvidia.com/XFree86/nvidia-settings. The one shipped with Fedora is too old and hwloc will not build with it. When I have the nvidia proprietary driver installed, it does not show as an OS device. Here's the end of the tests/hwloc_iodevs output: Found 3 OS devices Found OS device em1 subtype 2 Found OS device sda subtype 0 Found OS device sr0 subtype 0 with the open-source nouveau driver loaded, it looks like this: Found 5 OS devices Found OS device card0 subtype 1 Found OS device controlD64 subtype 1 Found OS device em1 subtype 2 Found OS device sda subtype 0 Found OS device sr0 subtype 0 The card0 and controlD64 objects have no infos associated with them. There are no other differences in the output. Both drivers seem operational. I've attached the gather-topology output (created with the nvidia driver loaded) in case anyone wants to see it. thanks, --Guy
mentos.hsv.redhat.com.tar.bz2
Description: application/bzip
