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Subject: Re: [OMPI users] Using hostfile with default hostfile
From: Eugene Loh (eugene.loh_at_[hidden])
Date: 2010-10-27 11:38:59


jody wrote:

>Where is the option 'default-hostfile' described?
>
>
Try "mpirun --help". Not everything makes it to the man page. Heck,
not everything is documented!

>It does not appear in mpirun's man page (for v. 1.4.2)
>and i couldn't find anything like that with googling.
>
>On Wed, Oct 27, 2010 at 4:02 PM, Ralph Castain <rhc_at_[hidden]> wrote:
>
>
>>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.
>>