Open MPI logo

Hardware Locality Users' Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Hardware Locality Users mailing list

Subject: Re: [hwloc-users] lstopo and GPus
From: Samuel Thibault (samuel.thibault_at_[hidden])
Date: 2012-08-28 08:21:45

Gabriele Fatigati, le Tue 28 Aug 2012 14:19:44 +0200, a écrit :
> I attach the figure. The system has two GPUs, but I don't understand how to
> find that information from PCI boxes.

The 10de:xxxx devices are the GPUs (or alternatively, use the cuda
branch from the svn repository). The figure shows that they are both
connected to the same bus. You can additionally run lstopo as root to
get the bus speed.