On 04/27/2011 03:51 PM, Pavan Balaji wrote:

Page 339 lines 21-24 of MPI-2.2 states the following:

"It is erroneous to have concurrent confl icting accesses to the same memory location in a window; if a location is updated by a put or accumulate operation, then this location cannot be accessed by a load or another RMA operation until the updating operation has completed at the target."

What does this mean when I do PUT with a datatype with overlapping buffers? Is that valid or erroneous?

My interpretation is that this is also erroneous. ~Jim.