[Bioclusters] error on qsub/mpirun jobs

Rob Hutten rob at hutten.org
Mon Sep 8 12:00:06 EDT 2008

Hi Zhiliang ,

Do you have rsa/dsa authentication in both directions, ie can you ssh
back to the headnodes from the compute nodes?

On Fri, Sep 5, 2008 at 5:55 PM, Zhiliang Hu <zhu at iastate.edu> wrote:
> I have a a mpiblast job that runs well on command line ("mpirun").
> But have errors when "qsub" to run:
> qsub -l nodes=6:ppn=2
>     -e /path/to/locationA
>     -o /path/to/locationA
>     /path/to/program
> ----------------------------------------------------------
> Unable to copy file /var/spool/torque/spool/658.nagrp2..ER to
> hu at hist:/raid/pub/ncbi/blast/www/mpiblast.tmp
>>>> error from copy
> Host key verification failed.
> lost connection
>>>> end error output
> Output retained on that host in: /var/spool/torque/undelivered/658.nagrp2..ER
> ----------------------------------------------------------
> Note: When manually check, the "retained" file is not there:
> "/var/spool/torque/undelivered/658.nagrp2..ER"
> I wonder why "Host key verification failed"?  Could this be the cause?
> (I can ssh to all nodes no problem)
> Any hint to look further is appreciated.
> Zhiliang

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