Re: [OMPI users] Collective component priorities and sm

2010-06-09 Thread Jeff Squyres
On Jun 9, 2010, at 12:43 AM, Gus Correa wrote: > btl_self_priority=0 (default value) > btl_sm_priority=0 (default value) These are ok. BTL selection is a combination of priority and reachability. The self BTL can *only* reach its own process. So process A will use the "self" BTL to talk to p

[OMPI users] Collective component priorities and sm

2010-06-09 Thread Gus Correa
Dear OpenMPI experts I am confused about the role and values of priorities set to the OpenMPI collective components, and why the shared memory (sm) collective component disqualifies itself (apparently by default). I describe the problem, then ask a some questions, if you have the patience to read