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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 13:57:00


Dear Shao-Ching,

oops, I see what you mean. Sorry, I got sloppy and in a hurry. I should
have the slots= flag in that file.

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

On Fri, Oct 11, 2013 at 1:54 PM, Kelly Black <kjblack_at_[hidden]> wrote:

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