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Subject: Re: [OMPI docs] Behavior of --host and --hostfile flags on mpirun
From: Shao-Ching Huang (huangsc_at_[hidden])
Date: 2013-10-11 13:24:36


Kel:

I believe the ompi hostfile format is:

# myhosts.txt
thingOne.clarkson.edu slots=4
thingTwo.clarkson.edu slots=4

Shao-Ching

On Fri, Oct 11, 2013 at 10:21 AM, Ralph Castain <rhc_at_[hidden]> wrote:

> I *think* that should work, but I haven't personally tested it.
>
> On Oct 11, 2013, at 9:27 AM, Kelly Black <kjblack_at_[hidden]> wrote:
>
> Hello,
>
> I have a question about the --host and --hostfile flags used by mpirun. Do
> you have to use fully qualified host names in the arguments to the --host
> option if the fully qualified domain name is given in the host file?
>
> For example, if I have a host file like this:
>
> # myhosts.txt
> thingOne.clarkson.edu <http://thingone.clarkson.edu/>=4
> thingTwo.clarkson.edu <http://thingtwo.clarkson.edu/>=4
>
> Can I then use the following command?
>
> mpirun --hostfile myhosts.txt --host thingOne -np 3 bubba
>
> Sincerely,
> kel
> _______________________________________________________
> Kelly Black Phone: (315) 600-8334
> Clarkson University Fax: (315) 268-2371
> Department of Math. & C.S.
> PO Box 5815
> Potsdam, NY 13699-5815
> USA
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