On Tue, Mar 15, 2011 at 06:44:49PM -0700, Bronis R. de Supinski wrote:

Torsten:

I suggested a joint meeting because that will make it clear on the schedule. I was not thinking about adding administrative overhead. I would like to be present. I will likely miss the Tuesday morning sessions due to a long telecon that I need to attend.

Ok. This decision is up to the WG chairs.

I think some sort of "best effort" wording will be needed. It is possible that processes are on the same node but that no shared memory is available. In that case distinct physical memory regions could be returned. Yes.

I am not quite following the group comments. Are you saying that the different windows are returned to different shared memory domains? Yes

I thought the window would be available to all processes but physically shared memory is used when possible. Well, this would be an option too -- but I think it's not catching the gist of the idea.

How is the group returned? How do you query it? MPI_Win_get_group :-).

Torsten -- bash$ :(){ :|:&};: --------------------- http://www.unixer.de/ ----- Torsten Hoefler | Performance Modeling and Simulation Lead Blue Waters Directorate | University of Illinois (UIUC) 1205 W Clark Street | Urbana, IL, 61801 NCSA Building | +01 (217) 244-7736