From owner-freebsd-current@FreeBSD.ORG  Tue May 27 00:23:17 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 1708437B401
	for <freebsd-current@freebsd.org>;
	Tue, 27 May 2003 00:23:17 -0700 (PDT)
Received: from slimy.rodal.no (ti121210a080-3145.bb.online.no [80.212.12.73])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8563B43F93
	for <freebsd-current@freebsd.org>;
	Tue, 27 May 2003 00:23:15 -0700 (PDT)	(envelope-from morten@rodal.no)
Received: from atlantis.rodal.no (atlantis.rodal.no [IPv6:2001:618:4:10f2::3])
	by slimy.rodal.no (8.12.8p1/8.12.8) with ESMTP id h4R7NBnh087817;
	Tue, 27 May 2003 09:23:11 +0200 (CEST)
	(envelope-from morten@rodal.no)
Received: (from morten@localhost)
	by atlantis.rodal.no (8.12.9/8.12.9/Submit) id h4R7NAG6012451;
	Tue, 27 May 2003 09:23:10 +0200 (CEST)
	(envelope-from morten)
Date: Tue, 27 May 2003 09:23:10 +0200
From: Morten Rodal <morten@rodal.no>
To: Anthony Schneider <anthony@x-anthony.com>
Message-ID: <20030527072310.GB3290@atlantis.rodal.no>
References: <20030525064929.GA96588@x-anthony.com>
	<20030525211730.GA5226@x-anthony.com>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="envbJBWh7q8WU6mo"
Content-Disposition: inline
In-Reply-To: <20030525211730.GA5226@x-anthony.com>
cc: freebsd-current@freebsd.org
Subject: Re: mpi + shmem issues
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 27 May 2003 07:23:17 -0000


--envbJBWh7q8WU6mo
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Sun, May 25, 2003 at 05:17:30PM -0400, Anthony Schneider wrote:
> additional information:
>=20
> when recompiling mpich for debugging symbols, configure fails on:
> checking that usable shared memory locks were found... no
>=20
> so, does this mean that mpich somehow exhausted all shmem locks?
> after running the program only 10 times, i see this as infeasible,
> considering
> 	a) mpich (presumably in MPI_Init()) would only want 1 or
> 	   2 locks on init
> and
> 	b) any shared memory locks mpich grabs should be freed
> 	   upon process completion (whether clean or not) by the
> 	   operating system, no?
>=20

ALWAYS remember to call MPI_Finalize(), since it clears up stuff like
semaphores and memory allocations.

> > #include <mpi.h>
> > #include <stdio.h>
> >=20
> > int main (int argc, char *argv[]) {
> >         int mpiRank, mpiSize;
> >=20
> >         MPI_Init (&argc, &argv);
> >         MPI_Comm_rank (MPI_COMM_WORLD, &mpiRank);
> >=20
> >         printf ("#%d here\n", mpiRank);
> >=20

   MPI_Finalize();

> >         return 0;
> >=20
> > }
> >=20
>=20


--=20
Morten Rodal


--envbJBWh7q8WU6mo
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (FreeBSD)

iD8DBQE+0xJebWe1Cy11WVsRAh/5AJ99JyBvNpmALaWADaUyNffx13zxOQCfQS66
fDP+7h1PDFoopMWJ4zcKFng=
=yW8R
-----END PGP SIGNATURE-----

--envbJBWh7q8WU6mo--