platforms (or unlucky on Titan)
Thanks!
From: mpi-forum on behalf of William
Gropp via mpi-forum
Sent: Wednesday, November 07, 2018 8:06 PM
To: Main MPI Forum mailing list
Cc: William Gropp
Subject: Re: [Mpi-forum] Persistent Readysend Semantics Question
Pavan
Pavan is correct; the program is buggy. Here’s an example
process 1 process 2
start(recv) /* something causes a delay at process 2 */
start(rsend)
wait(all)
start(recv)
….
In this case, the rsend on process 1 occurs before the recv is
Brian,
Assuming all processes are doing the same code as below, I think the user
program is incorrect and you were just getting lucky with the other
implementations.
Specifically, there’s nothing stopping the rsend from a process to reach the
other process before it posted the corresponding
Hi all,
(trying again; I thought this address was subscribed to the list but maybe not.
Sorry if this is a duplicate)
I have a user-provided code that uses persistent ready sends. (Don’t ask. I
don’t have an answer to “why?”. Maybe it actually helped on some machine
sometime in the past?)
