Newsgroups: comp.parallel.mpi
From: Jim Tuccillo <jjt@radia1.com>
Subject: Re: Memory leak on the SP2 with MPI call
Organization: http://www.supernews.com, The World's Usenet: Discussions Start Here
Date: Wed, 22 Jul 1998 07:54:06 -0400
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Message-ID: <35B5D2DE.15FB@radia1.com>

I tested this on an SP with MPI Version 2 ( and the latest release of
AIX and PSSP ) and did not see a memory leak. You may want to install
the latest software releases on your system.


Wai Sun Don wrote:
> 
> I have written a three lines code to loop over the call to MPI_Barrier
> after the MPI initialization,
> 
> do i = 1,1000000000
>   call MPI_Barrier (MPI_Comm_World, MPI_Error)
> enddo
> 
> Running it on the SP2 with MPI-1.1 here at Brown.
> 
> Using ps to check for memory size during the running of the code above,
> we found that the memory of size 4K is leaking at some unknown
> time interval.  No memory leak on 1 processors though.  No memory
> leak on the SGI with MPI implementation.
> 
> Has anyone seen this before?  If so, what is the cure and
> why it happened?  Thank for the info.
> 
> --
> Wai Sun Don
> Visiting Professor (Research)