Newsgroups: comp.parallel.mpi
From: hamadi <hamadi@lirmm.fr>
Subject: MPI_Buffer_attach...?
Organization: LIRMM
Date: Wed, 03 Jun 1998 21:57:57 +0200
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Message-ID: <3575AAC4.D4380C17@lirmm.fr>

Hi all,

I'm experiencing some problems with the IBM sp2 implementation of MPI.
The problem come from the use of buffer for using with bufferized
transmissions. More precisely, i'm attaching a local buffer for each
process with :
MPI_Buffer_attach(Buffer, BufferSize)

At run time, the following errors occurs:
  0:ERROR: 0032-114 Internal error:  Memory is exhausted. in MPI_Bsend,
task 0
This means that process 0 cannot execute more bufferized
transmissions... That's ok.. they are too much messages.. But when i try
to raise Buffer size with the appropriate BufferSize value there is no
change... from small to very large values termination occurs at the same
level in process execution...

In fact i'm suspecting that the MPI implementation use a prefixed value
for bufferized communications...

Any comments, help are welcome

Youssef Hamadi
LIRMM (UM2/CNRS) France