LAM: Selected RPI failed during MPI_INIT

Hi all,

I am currently developping a paralell application with
LAM/MPI and
everything used to be fine. However, since yesterday I
cannot work any
more with the system.

I tried to isolate the problem so I tried to check if MPI
works with a
simple paralell "Hello world!". I'm getting the
following error:

magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np 3 ./hello
------------------------------------------------------------
-----------------
The selected RPI failed to initialize during MPI_INIT.  This
is a
fatal error; I must abort.

This occurred on host n2 (n1).
The PID of failed process was 12909 (MPI_COMM_WORLD rank:
2)

I also tried with only 2 cluster nodes and there's is no
problem
but... there isn't any output! (before THERE WAS an
output):

magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np 2 ./hello
magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$

I have searched the answer for my problem into the list and
the
Internet but I found no satisfactory solutions.

I will thank any help ,

Miguel Ángel González Gisbert
FACULTAD DE INFORMÁTICA
UNIVERSIDAD POLITÉCNICA DE MADRID

_______________________________________________
This list is archived at http://www.l
am-mpi.org/MailArchives/lam/

Try running "lamclean" -- if your MPI application
seg faults, shared  
memory allocations may still be left around.  lamclean (or
lamhalt /  
lamboot) should clear them out.


On Jul 20, 2007, at 8:12 AM, Miguel Ángel González Gisbert
wrote:

> Hi all,
>
> I am currently developping a paralell application with
LAM/MPI and
> everything used to be fine. However, since yesterday I
cannot work any
> more with the system.
>
> I tried to isolate the problem so I tried to check if
MPI works with a
> simple paralell "Hello world!". I'm getting
the following error:
>
> magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np  
> 3 ./hello
>
------------------------------------------------------------
---------- 
> -------
> The selected RPI failed to initialize during MPI_INIT. 
This is a
> fatal error; I must abort.
>
> This occurred on host n2 (n1).
> The PID of failed process was 12909 (MPI_COMM_WORLD
rank: 2)
>
> I also tried with only 2 cluster nodes and there's is
no problem
> but... there isn't any output! (before THERE WAS an
output):
>
> magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np  
> 2 ./hello
> magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$
>
> I have searched the answer for my problem into the list
and the
> Internet but I found no satisfactory solutions.
>
> I will thank any help ,
>
> Miguel Ángel González Gisbert
> FACULTAD DE INFORMÁTICA
> UNIVERSIDAD POLITÉCNICA DE MADRID
>
> _______________________________________________
> This list is archived at http://www.l
am-mpi.org/MailArchives/lam/


-- 
Jeff Squyres
Cisco Systems


_______________________________________________
This list is archived at http://www.l
am-mpi.org/MailArchives/lam/

Thank you very much for your very fast answer, Jeff.

Everything seems to be ok right now. I already did that, but
I didn't
restart LAM (lamboot) properly (using a file to specify the
nodes to
be used).

On 7/20/07, Jeff Squyres <jsquyrescisco.com> wrote:
> Try running "lamclean" -- if your MPI
application seg faults, shared
> memory allocations may still be left around.  lamclean
(or lamhalt /
> lamboot) should clear them out.
>
>
> On Jul 20, 2007, at 8:12 AM, Miguel Ángel González
Gisbert wrote:
>
> > Hi all,
> >
> > I am currently developping a paralell application
with LAM/MPI and
> > everything used to be fine. However, since
yesterday I cannot work any
> > more with the system.
> >
> > I tried to isolate the problem so I tried to check
if MPI works with a
> > simple paralell "Hello world!". I'm
getting the following error:
> >
> > magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np
> > 3 ./hello
> >
------------------------------------------------------------
----------
> > -------
> > The selected RPI failed to initialize during
MPI_INIT.  This is a
> > fatal error; I must abort.
> >
> > This occurred on host n2 (n1).
> > The PID of failed process was 12909
(MPI_COMM_WORLD rank: 2)
> >
> > I also tried with only 2 cluster nodes and there's
is no problem
> > but... there isn't any output! (before THERE WAS
an output):
> >
> > magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$ mpirun
-np
> > 2 ./hello
> > magonzalezbaobab:~/StageVerano/MultMatrices/MPI/Ver1$
> >
> > I have searched the answer for my problem into the
list and the
> > Internet but I found no satisfactory solutions.
> >
> > I will thank any help ,
> >
> > Miguel Ángel González Gisbert
> > FACULTAD DE INFORMÁTICA
> > UNIVERSIDAD POLITÉCNICA DE MADRID
> >
> > _______________________________________________
> > This list is archived at http://www.l
am-mpi.org/MailArchives/lam/
>
>
> --
> Jeff Squyres
> Cisco Systems
>
>
> _______________________________________________
> This list is archived at http://www.l
am-mpi.org/MailArchives/lam/
>

_______________________________________________
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