Newsgroups: comp.parallel.mpi
From: sampath@parcom.ernet.in (Dr.P.S.Narayanan)
Subject: help needed,mpi-problem
Organization: Centre for Development of Advanced Computing (C-DAC), Pune, INDIA.
Date: Fri, 25 Aug 1995 12:09:40 GMT
Message-ID: <DDv8G5.Fnu@parcom.ernet.in>

We are facing strange MPI problem. If anyone has faced
similar problem and knows how to fix kindly send us
info by email.

we are running a cfd code written in fortran under mpi.
we are running the parallel code on network of sparcs.
For small grid size the code works fine and produces
correct results.

However for large data size the code aborts after some
number of iterations.The message it flashes is as follws:
"
	Illegal = signal 4 code 2
Traceback has been recorded in file:
/.../.../tracefile
Note:Line numbers for system & library calls
may be incorrect
Abort

"
We are using MPI_send,MPI_recv, and MPI_bcast calls.


Thanks in advance
Dr.P.Sampath Narayanan

