From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10537 invoked by alias); 16 Oct 2009 06:37:58 -0000 Received: (qmail 10523 invoked by uid 22791); 16 Oct 2009 06:37:57 -0000 X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 tests=BAYES_00 X-Spam-Check-By: sourceware.org Received: from web36805.mail.mud.yahoo.com (HELO web36805.mail.mud.yahoo.com) (209.191.85.56) by sourceware.org (qpsmtpd/0.43rc1) with SMTP; Fri, 16 Oct 2009 06:37:53 +0000 Received: (qmail 35225 invoked by uid 60001); 16 Oct 2009 06:37:52 -0000 Message-ID: <110050.35015.qm@web36805.mail.mud.yahoo.com> Received: from [82.181.99.11] by web36805.mail.mud.yahoo.com via HTTP; Thu, 15 Oct 2009 23:37:51 PDT Date: Fri, 16 Oct 2009 20:34:00 -0000 From: Daniel Qarras Subject: Re: MPI debugging support in GDB? To: gdb@sourceware.org, Tom Tromey , Pedro Alves Cc: =?iso-8859-1?Q?S=E9rgio_Durigan_J=FAnior?= In-Reply-To: <200910141556.54381.pedro@codesourcery.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2009-10/txt/msg00275.txt.bz2 > > If you know, could you say something about what kind of support would be > > needed?=A0 Even that would help a bit, I think. >=20 > I think that for full and transparent support, we'd need to start with > being able to debug multiple (remote) targets simultaneously?=A0 GDB can't > do that currently --- it can only debug multiple processes running on > the same host. Yes, I think this is a hard requirement. I'm also pretty sure that supporti= ng code would be needed for each MPI library implementation (their might ha= ve something comparable to libthread_db/nptl_db). OpenMPI is the most promi= nent open source MPI implementation today, its page might give some additio= nal clues: http://www.open-mpi.org/faq/?category=3Ddebugging Thanks!