Re: [OMPI users] Openmpi and processor affinity

The changes Jeff mentioned are not in the 1.3 branch - not sure if they will come over there or not. I'm a little concerned in this thread that someone is reporting the process affinity binding changing - that shouldn't be happening, and my guess is that something outside of our control may be

Re: [OMPI users] Openmpi and processor affinity

On Jun 3, 2009, at 11:40 AM, Ashley Pittman wrote: Wasn't there a discussion about this recently on the list, OMPI binds during MPI_Init() so it's possible for memory to be allocated on the wrong quad, the discussion was about moving the binding to the orte process as I recall? Yes. It's

Re: [OMPI users] Openmpi and processor affinity

On Wed, 2009-06-03 at 11:27 -0400, Jeff Squyres wrote: > On Jun 3, 2009, at 10:48 AM, wrote: > > > For HPL, try writing a bash script that pins processes to their > > local memory controllers using numactl before kicking off HPL. This > > is particularly helpful

Re: [OMPI users] Openmpi and processor affinity

nesday, June 03, 2009 10:27 AM > To: Open MPI Users > Subject: Re: [OMPI users] Openmpi and processor affinity > > On Jun 3, 2009, at 10:48 AM, <jacob_liber...@dell.com> wrote: > > > For HPL, try writing a bash script that pins processes to their > > local memory

Re: [OMPI users] Openmpi and processor affinity

On Jun 3, 2009, at 10:48 AM, wrote: For HPL, try writing a bash script that pins processes to their local memory controllers using numactl before kicking off HPL. This is particularly helpful when spawning more than 1 thread per process. The last line of your

Re: [OMPI users] Openmpi and processor affinity

ailto:users-boun...@open-mpi.org] On > Behalf Of Iftikhar Rathore > Sent: Tuesday, June 02, 2009 10:25 PM > To: Open MPI Users > Subject: Re: [OMPI users] Openmpi and processor affinity > > Guss > Thanks for the reply and it was a typo (Im sick). I have updated to > 1.3.2 since m

Re: [OMPI users] Openmpi and processor affinity

Guss Thanks for the reply and it was a typo (Im sick). I have updated to 1.3.2 since my last post and have tried checking cpu affinity by using f and j it shows processes spread on all 8 cores in the beginning, but it does eventually shows all processes running on 0, My P and Q's are made for

Re: [OMPI users] Openmpi and processor affinity

On Jun 2, 2009, at 7:30 PM, Iftikhar Rathore -X (irathore - SIFY LIMITED at Cisco) wrote: We are using openmpi version 1.2.8 (packaged with ofed-1.4). I am trying to run hpl-2.0 (linpak). We have two intel quad core CPU's in all our server (8 total cores) and all hosts in the hostfile have

Re: [OMPI users] Openmpi and processor affinity

Hi Iftikhar Iftikhar Rathore wrote: Hi We are using openmpi version 1.2.8 (packaged with ofed-1.4). I am trying to run hpl-2.0 (linpak). We have two intel quad core CPU's in all our server (8 total cores) and all hosts in the hostfile have lines that look like "10.100.0.227

[OMPI users] Openmpi and processor affinity

Hi We are using openmpi version 1.2.8 (packaged with ofed-1.4). I am trying to run hpl-2.0 (linpak). We have two intel quad core CPU's in all our server (8 total cores) and all hosts in the hostfile have lines that look like "10.100.0.227 slots=8max_slots=8". Now when I use mpirun (even with