Thanks!
El jue, 01-04-2010 a las 09:10 -0400, Jeff Squyres escribió:
> On Apr 1, 2010, at 9:03 AM, Patricio Mac Adden wrote:
>
> > Ok, so I've installed it through apt-get.
> >
> > I've noticed that lam* doesn't exists anymore. (I've uninstalled
> > lam4-dev and lam-runtime packages).
> >
> > Executing mpirun -c 2 dist does the trick?
>
> Yes. That will likely launch 2 copies of "dist" on your localhost. If you need to spread across multiple nodes, you'll likely need to supply a hostfile via --hostfile. See "mpirun --help" and "man mpirun" for (lots) more details.
>
> There is no lamboot / lamhalt in Open MPI -- just mpirun in Open MPI.
>
> > Another question: my complilation commands are ok?
>
> I'm not sure what you mean by the question. If you're just using "mpicc -Wall -g -O3 -c dist.c lib/*.c", then yes, probably so. Open MPI has mpicc (and friends) that function as wrapper compilers very similar to LAM/MPI (slightly better than LAM/MPI, actually).
>
> Further questions about Open MPI should probably be directed to the Open MPI user's list:
>
> http://www.open-mpi.org/community/lists/ompi.php
>
> > Thanks for your time, Jeff
> >
> > El jue, 01-04-2010 a las 08:42 -0400, Jeff Squyres escribió:
> > > The short version is that Open MPI is the next generation beyond LAM/MPI. All of us LAM developers stopped working on LAM/MPI (literally) years ago and moved to Open MPI.
> > >
> > > If your app uses the standard MPI API, then it should port quite easily (probably with no source code changes) to Open MPI.
> > >
> > >
> > >
> > > On Apr 1, 2010, at 8:31 AM, Patricio Mac Adden wrote:
> > >
> > > > It's quite complex, this application is for a college report. I'm not
> > > > sure if I can use open mpi. What's the major differences between lam-mpi
> > > > and open mpi?
> > > >
> > > > Thanks for your answer!!
> > > >
> > > > El jue, 01-04-2010 a las 05:33 -0500, Jeff Squyres (jsquyres) escribió:
> > > > > Since you're just starting out, can you upgrade to open mpi?
> > > > >
> > > > > -jms
> > > > > Sent from my PDA. No type good.
> > > > >
> > > > > ----- Original Message -----
> > > > > From: lam-bounces_at_[hidden] <lam-bounces_at_[hidden]>
> > > > > To: lam_at_[hidden] <lam_at_[hidden]>
> > > > > Sent: Thu Apr 01 00:20:35 2010
> > > > > Subject: LAM: Unix Errno: 14 Bad Address
> > > > >
> > > > > Hi, I'm new in this list.
> > > > >
> > > > > I'm developing a MPI application that uses math.h lib. My problem is
> > > > > that when I compile my application, no error ocurrs, but when I run my
> > > > > application with mpirun, I get this error:
> > > > >
> > > > > It seems that some error has occurred during MPI_INIT. This will
> > > > > cause your process to abort. These kinds of errors are usually
> > > > > system-related, such as running out of disk space, running out of
> > > > > memory, or something more serious such as data not being passed
> > > > > between processes properly. That is, you should not be seeing this
> > > > > error message; if you are, something is likely Very Wrong with your
> > > > > system. :-(
> > > > >
> > > > > Perhaps this Unix error message will help:
> > > > >
> > > > > Unix errno: 14
> > > > > Bad address
> > > > >
> > > > > -----------------------------------------------------------------------------
> > > > > -----------------------------------------------------------------------------
> > > > > It seems that [at least] one of the processes that was started with
> > > > > mpirun did not invoke MPI_INIT before quitting (it is possible that
> > > > > more than one process did not invoke MPI_INIT -- mpirun was only
> > > > > notified of the first one, which was on node n0).
> > > > >
> > > > > mpirun can *only* be used with MPI programs (i.e., programs that
> > > > > invoke MPI_INIT and MPI_FINALIZE). You can use the "lamexec" program
> > > > > to run non-MPI programs over the lambooted nodes.
> > > > >
> > > > > This is how I'm compiling the application:
> > > > >
> > > > > mpicc -Wall -g -O3 -c dist.c lib/*.c
> > > > > mpicc -Wall -g -O3 -o dist *.o -lm
> > > > >
> > > > > Also, I'm running the application like this:
> > > > >
> > > > > mpirun -c 2 dist
> > > > >
> > > > > I'm using Ubuntu 9.10, lam 7.1.2, gcc 4.4.1
> > > > >
> > > > > I hope that someone can help me, I googled a lot but I've found no
> > > > > solution to my problem.
> > > > >
> > > > > Thanks in advance.
> > > > >
> > > > > --
> > > > > Patricio Mac Adden
> > > > >
> > > > > _______________________________________________
> > > > > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> > > >
> > > >
> > > > --
> > > > Patricio Mac Adden
> > > >
> > > > _______________________________________________
> > > > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> > > >
> > >
> > >
> >
> >
> > --
> > Patricio Mac Adden
> >
> > _______________________________________________
> > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> >
>
>
--
Patricio Mac Adden
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