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Subject: Re: [OMPI users] Error running program : mca_oob_tcp_msg_send_handler: writev:failed: Bad file descriptor
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2013-01-16 08:57:15


Try disabling firewalling between your nodes. The easiest way is "sudo service iptables stop".

On Jan 16, 2013, at 7:46 AM, borja mf <borjamunozfernandez_at_[hidden]>
 wrote:

> Hello all.
> I want to learn MPI and I've trying to setting up OMPI for first time on three nodes. My config above:
> Ubuntu server - master node: pruebaborja
> 2x Ubuntu Desktop - slaves node:
> clienteprueba
> clientepruebados 4 slots
>
> Im running NFSv4 for sharing /home/mpiuser.
> I want to test a plain "Hello world"but I can't make it working successfully on node clienteprueba. This is the problem:
>
> mpiuser_at_pruebaborja:~$ mpirun -np 6 --hostfile .mpi_hostfile ./holamundo
> [clienteprueba:01993] [[64434,0], 2] -> [[64434,0],0] mca_oob_tcp_msg_send_handler: writev:failed: Bad file descriptor (9) [sd = 9]
> [clienteprueba:01993] [[64434,0], 2] routed:binomial: Connection to lifeline [[64434,0],0] lost
>
> However, with clientepruebados and pruebaborja only on my hostfile, it works:
>
> pruebaborja slots=1
> clientepruebados slots=4
> #clienteprueba slots=1
>
> mpiuser_at_pruebaborja:~$ mpirun -np 6 --hostfile .mpi_hostfile ./holamundo
> Hola, mundo, soy pruebaborja: 0 de 6
> Hola, mundo, soy pruebaborja: 5 de 6
> Hola, mundo, soy clientepruebados: 1 de 6
> Hola, mundo, soy clientepruebados: 2 de 6
> Hola, mundo, soy clientepruebados: 3 de 6
> Hola, mundo, soy clientepruebados: 4 de 6
>
> I've checked the OMPI versions on the machines and it's the same. I can't understand why Im getting this error on clienteprueba; i've done the same config on clientepruebados and clienteprueba. Anyone could help me to solve this?
>
> Sorry for my english.
> Thanks in advance
>
>
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> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

-- 
Jeff Squyres
jsquyres_at_[hidden]
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