On Nov 21, 2005, at 4:00 PM, Angel Tsankov wrote:
> The multiple use of a persistent communicaion request does not
> eliminate the startup time every time the request is used to send
> data, does it?
I'm not sure what you mean by "startup time" -- do you mean "overhead"?
Using persistent requests does eliminate some of the overhead
associated with sending / receiving. For the purposes of this
conversation, I'm defining "overhead" as the time between when you
invoke (for example) MPI_Send and when the data actually is sent to the
peer (e.g., when the data "hits the wire").
--
{+} Jeff Squyres
{+} The Open MPI Project
{+} http://www.open-mpi.org/
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