On Apr 3, 2015, at 12:50 PM, Lei Shi <lei...@ku.edu> wrote: > > P.S. Pavan suggests me to use MPI_Request_free. I will give it a try.
Keep in mind that you have zero indication of when a send or receive completes if you MPI_Request_free (Pavan implied this, too). You could be reading half a message from a prior receive, for example. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/