17 Jul
2008
17 Jul
'08
4:37 p.m.
On Thu, Jul 17, 2008 at 05:29:36PM -0400, Richard Treumann wrote:
It is clear that if the matching RECV has completed then the unaltered content of the ISEND buffer is no longer needed.
This isn't clear to me. There's certainly no promise of that in the MPI-1 standard text on the web. That's why I said I thought it should be undefined. This is "spooky action at a distance" for me. We shouldn't encourage it. And I still think it's the same can of worms as MPI_Cancel. If MPI_Cancel works, then an RDMA-using MPI can simple call it at the start of the request_free call. -- greg