Newsgroups: comp.parallel.mpi
From: Chang Song <song@ctc.com>
Subject: Help! Buffered MPI send(MPICH)
Organization: Concurrent Technologies Corp.
Date: Thu, 17 Oct 1996 09:08:13 -0400
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Message-ID: <32662FBD.41C6@ctc.com>

Hi. I am investigating MPI buffered send and receive.
One fellow who worked here found out that, with MPICH current version, 
there is no limit of the size of message of MPI_Send.
But for MPI_IBsend, there is a limit of the size of a message that can
be 
delivered, which was 50K. And MPI_Bsend doesn't even use user-specified
buffer,
even though a large buffer has been attached. It seems that MPICH only
uses
100K of system buffer.

How do I take control of buffer if this is true?


-- 
Chang Song                              E-Mail: song@ctc.com
Concurrent Technologies Corporation
1450 Scalp Avenue                       Phone:  814-269-6515
Johnstown, PA 15904                     Fax:    814-269-2666

