Re: [hwloc-devel] multiple simultaneous topology inits?

2011-03-01 Thread Jeff Squyres (jsquyres)
FWIW OMPI is moving to a model like that. Sent from my phone. No type good. On Mar 1, 2011, at 4:47 AM, "Bernd Kallies" wrote: > On Mon, 2011-02-28 at 22:17 +0100, Brice Goglin wrote: >> Le 28/02/2011 22:04, Jeff Squyres a écrit : >>> That being said, someone cited on this

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-03-01 Thread Bernd Kallies
On Tue, 2011-03-01 at 11:00 +0100, Brice Goglin wrote: > Le 01/03/2011 10:46, Bernd Kallies a écrit : > > To calculate topology-based pinning schemes and do process pinning (like > > done e.g. by OpenMPI or MVAPICH2) this is too long, when every process > > (MPI task) or thread loads the topology

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-03-01 Thread Brice Goglin
Le 01/03/2011 10:46, Bernd Kallies a écrit : > To calculate topology-based pinning schemes and do process pinning (like > done e.g. by OpenMPI or MVAPICH2) this is too long, when every process > (MPI task) or thread loads the topology in parallel. But exporting an > XML topology and using this for

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-03-01 Thread Bernd Kallies
On Mon, 2011-02-28 at 22:17 +0100, Brice Goglin wrote: > Le 28/02/2011 22:04, Jeff Squyres a écrit : > > That being said, someone cited on this list a long time ago that running > > the hwloc detection on very large machines (e.g., SGI machines with 1000+ > > cores) takes on the order of seconds

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-02-28 Thread Brice Goglin
Le 28/02/2011 22:04, Jeff Squyres a écrit : > That being said, someone cited on this list a long time ago that running the > hwloc detection on very large machines (e.g., SGI machines with 1000+ cores) > takes on the order of seconds (because it traverses /sys, etc.). So if you > want your

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-02-28 Thread Samuel Thibault
Guy Streeter, le Mon 28 Feb 2011 21:52:47 +0100, a écrit : > I was considering the design of an administration tool in python, and my > original idea was to have each module that needs the topology object create > its own. This means that different parts of the same program (but possibly > in

Re: [hwloc-devel] multiple simultaneous topology inits?

2011-02-28 Thread Jeff Squyres
On Feb 28, 2011, at 3:52 PM, Guy Streeter wrote: > I was considering the design of an administration tool in python, and my > original idea was to have each module that needs the topology object create > its own. This means that different parts of the same program (but possibly in > different

[hwloc-devel] multiple simultaneous topology inits?

2011-02-28 Thread Guy Streeter
I was considering the design of an administration tool in python, and my original idea was to have each module that needs the topology object create its own. This means that different parts of the same program (but possibly in different threads) would call init and load on their own topology