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Subject: Re: [OMPI docs] Behavior of --host and --hostfile flags on mpirun
From: Kelly Black (kjblack_at_[hidden])
Date: 2013-10-11 13:54:41


Hello,

I thought that the "slots" flag was optional in the host file format where
the slots option gives the max no. of slots?

-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

On Fri, Oct 11, 2013 at 1:24 PM, Shao-Ching Huang <huangsc_at_[hidden]> wrote:

> 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
>> _______________________________________________
>> docs mailing list
>> docs_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/docs
>>
>>
>>
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>
>