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Subject: Re: [OMPI users] Using hostfile with default hostfile
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-10-27 10:02:29


Specify your hostfile as the default one:

mpirun --default-hostfile ./Cluster.hosts

Otherwise, we take the default hostfile and then apply the hostfile as a filter to select hosts from within it. Sounds strange, I suppose, but the idea is that the default hostfile can contain configuration info (#sockets, #cores/socket, etc.) that you might not want to have to put in every hostfile.

On Oct 27, 2010, at 7:51 AM, Stefan Kuhne wrote:

> Hello,
>
> my Cluster has a configured default hostfile.
>
> When i use another hostfile for one job i get:
>
> cluster-admin_at_Head:~/Cluster/hello$ mpirun --hostfile ../Cluster.hosts
> ./hello
> --------------------------------------------------------------------------
> There are no allocated resources for the application
> ./hello
> that match the requested mapping:
> ../Cluster.hosts
>
> Verify that you have mapped the allocated resources properly using the
> --host or --hostfile specification.
>
> ...
>
> Any ideas for it?
>
> Regards,
> Stefan Kuhne
>
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