Jim,
Is one process' disp_unit meaningful at another process? I thought that this is not the case. MPI provides no other routines to query another process' disp_unit. It is something that the user is passing in. I don't know of a particular use-case but we can query all other arguments that each process passed. One more integer seemed safe to me.
Also, what meaning does a disp_unit have in the context of load/store operations that will result from win_shared_query? Nothing.
Maybe I'm missing something, but this doesn't seem necessary. Well, it's better to have it than to introduce it with a different name later. That was my main motivation. One could also use it in a library context to query. But that's weak, I know.
We can back it out. We can also discuss it at a telecon. Torsten -- ### qreharg rug ebs fv crryF ------------- 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