[Beowulf] Re: Beowulf Digest, Vol 42, Issue 50

Peter St. John peter.st.john at gmail.com
Wed Sep 5 14:04:01 PDT 2007


I think the first error (file not found) was corrected right away, then the
second error was running but no response. So the relevant lines are:

> [waldyd at simeca ~]$ mpirun -np 8 -v a.out
> 6726 a.out running on n0 (o)
> mpirun: cannot start a.out on n1: No such file or directory
==== this attempt failed to start so next he tries....

> [waldyd at simeca ~]$ mpirun -np 8 -v -s n0 a.out
> 6728 a.out running on n0 (o)
> 4967 a.out running on n1
=== this attempt runs sucessfully but does not return a message at the end;
only the processes 0, 3, and 6 say "hellow" at the end.

Peter



On 8/31/07, Jörg Saßmannshausen <sassmannshausen at tugraz.at> wrote:
>
> Hi
>
> I assume that this error message:
>
> > mpirun: cannot start a.out on n1: No such file or directory
>
> indicates that on n1 that file is not in the same path as on any of the
> other
> nodes (i.e. something like /srv/home instead of /home) and hence the file
> cannot be found. I would check this as well.
>
> I hope it helps
>
> Jörg
>
> Am Freitag 31 August 2007 19:31 schrieb beowulf-request at beowulf.org:
> > Message: 1
> > Date: Thu, 30 Aug 2007 10:45:47 -0500
> > From: "Nestor Waldyd Alvarez Villa" <nestor.alvarez at upb.edu.co>
> > Subject: [Beowulf] Node not answering...
> > To: beowulf at beowulf.org
> > Message-ID: <op.txvp2lahbv8d16 at airevi.upb.edu.co>
> > Content-Type: text/plain; format=flowed; delsp=yes;
> > charset=iso-8859-15
> >
> > Hi...
> >
> > When running the hellow_mpi sample program, the following was prompted:
> >
> > [waldyd at simeca ~]$ lamnodes
> > n0 storage.cluster:1:origin,this_node
> > n1 node02:2:
> > [waldyd at simeca ~]$ mpirun -np 8 -v a.out
> > 6726 a.out running on n0 (o)
> > mpirun: cannot start a.out on n1: No such file or directory
> > [waldyd at simeca ~]$ mpirun -np 8 -v -s n0 a.out
> > 6728 a.out running on n0 (o)
> > 4967 a.out running on n1
> > 4968 a.out running on n1
> > 6729 a.out running on n0 (o)
> > 4969 a.out running on n1
> > 4970 a.out running on n1
> > 6730 a.out running on n0 (o)
> > 4971 a.out running on n1
> > Hellow, MPI! (3/8)-- simeca.gialea
> > Hellow, MPI! (0/8)-- simeca.gialea
> > Hellow, MPI! (6/8)-- simeca.gialea
> > [waldyd at simeca ~]$
> >
> > As you can see, node "n1" is not answering. Any ideas about how to solve
>
> > this issue?
> >
> > Beforehand Thanks...
> >
> > --
> >
> > Nestor Waldyd Alvarez Villa | Ingeniero Investigador | Grupo de
> > Investigaciones Ambientales (GIA)
> > Universidad Pontificia Bolivariana | Circular 1 No. 70-01, Bloque 8.
> Piso
> > 2. | Medellín, COLOMBIA
> > Tel: (57) (4) 4159015 Ext. 9841 | (57) (4) 415 90 84 | Fax: (57) (4)
> > 4159082
> > mailto:nestor.alvarez at upb.edu.co | www.upb.edu.co |
> > http://convena.upb.edu.co/~gialea/
>
> --
> *************************************************************
> Jörg Saßmannshausen
> Institut für chemische Technologie organischer Stoffe
> TU-Graz
> Stremayrgasse 16
> 8010 Graz
> Austria
>
> phone: +43 (0)316 873 8954
> fax: +43 (0)316 873 4959
> homepage: http://sassy.formativ.net/
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