On 6 January 2011 21:10, Gilbert Grosdidier <gilbert.grosdid...@cern.ch> wrote: > Hi Jeff, > > Where's located lstopo command on SuseLinux, please ? > And/or hwloc-bind, which seems related to it ?
I was able to get hwloc to install quite easily on SuSE - download/configure/make Configure it to install to /usr/local/bin Actually, the topic of hyperthreading is interesting, and we should discuss it please. Hyperthreading is supposedly implemented better and 'properly' on Nehalem - I would be interested to see some genuine performance measurements with hyperthreading on/off on your machine Gilbert. Also you don;t need to reboot and change BIOS settings - there was a rather niofty technique on this list I think, where you disable every second CPU in Linux - which has the same effect as switching off hyperthreading. Maybe you could try it?
