Re: [OMPI users] Help: How to accomplish processors affinity

2009-08-17 Thread Eugene Loh
Lee Amy wrote: I build a Kerrighed Clusters Like Lenny, I'm not familiar with such clusters, but... with 4 nodes so they look like a big SMP machine. every node has 1 processor with dingle core. 1) Dose MPI programs could be running on such kinds of machine? If yes, could anyone show me som

Re: [OMPI users] Help: How to accomplish processors affinity

2009-08-17 Thread Lenny Verkhovsky
Hi http://www.open-mpi.org/faq/?category=tuning#using-paffinity I am not familiar with this cluster, but in the FAQ ( see link above ) you can find an example of the rankfile. another simple example is the following: $cat rankfile rank 0=host1 slot=0 rank 1=host2 slot=0 rank 2=host3 slot=0 rank 3=h

[OMPI users] Help: How to accomplish processors affinity

2009-08-13 Thread Lee Amy
HI, I read some howtos at OpenMPI official site but i still have some problems here. I build a Kerrighed Clusters with 4 nodes so they look like a big SMP machine. every node has 1 processor with dingle core. 1) Dose MPI programs could be running on such kinds of machine? If yes, could anyone sh