On Jul 8, 2013, at 2:01 PM, Brice Goglin <brice.gog...@inria.fr> wrote:
> The driver doesn't allocate much memory here. Maybe some small control > buffers, but nothing significantly involved in large message transfer > performance. Everything critical here is allocated by user-space (either MPI > lib or application), so we just have to make sure we bind the process memory > properly. I used hwloc-bind to do that. +1 Remember that the point of IB and other operating-system bypass devices is that the driver is not involved in the fast path of sending / receiving. One of the side-effects of that design point is that userspace does all the allocation of send / receive buffers. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
