Newsgroups: comp.parallel.mpi
From: Vikas Sinha <vikas@galileo.eng.wayne.edu>
Subject: MPI: Group Communications
Organization: Wayne State University
Date: Tue, 21 Oct 1997 18:46:29 -0400
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Message-ID: <344D30C5.4964@galileo.eng.wayne.edu>

Hi!
	I am using the MPICH MPI implementation on Sun SMPs. I
am not being able to use MPI_Gather() when the message size of
the gathered composite message is more than 8Kbytes, although
I am allocating the requred buffer space before calling 
MPI_Gather().

	I have not faced any problem in sending much larger messages
using the standard MPI_send() / MPI_Recv functions. 

	I will appreciate if anyone could enlighten me, on
what is causing this. Is it an implementation (MPICH) limitation
or something else.

Regards,
Vikas Sinha