On 09/23/2011 02:39 AM, Torsten Hoefler wrote:

"The semantic rules for shared memory windows in the MPI_RMA_SEPARATE model allow concurrent load/store accesses from two distinct processes to the same target window that is remote to both processes. An implementation cannot expose shared memory windows on hardware that does not support this access mode."

This seems to suggest that it won't work for non-cache-coherent systems. Didn't we decide against that? -- Pavan Balaji http://www.mcs.anl.gov/~balaji