On Tue, Mar 15, 2011 at 09:03:40PM -0500, Rajeev Thakur wrote:

Since processes sharing memory can/will access it directly using memory references (not put/get), and this proposal is for the unified memory model, we need to say whether any of the synchronization functions in the RMA chapter are needed at all for such usage. Well, put/get to local windows are also allowed, so this would not be an exception. It's even nicely defined because the chapter defines the behavior for overlapping windows, and a shared window could be treated semantically like multiple overlapping windows. I am not sure if all are needed but I would say that all can be used.

Yes, load/store accesses would probably be the most common use (plus maybe the new (portable) atomics!). Best, 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