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Subject: Re: [OMPI users] OPenMpi: How to specify login name in machinefile passed to mpirun
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-03-11 10:27:54


Yeah, it was a bug in the parser - fix scheduled for 1.4.2 release.

Thanks!
Ralph

On Mar 11, 2010, at 4:32 AM, Olivier Riff wrote:

> Hello Ralph,
>
> Thanks for you quick reply.
> Sorry I did not mention the version : it is the v1.4 (which indeed is not the very last one).
> I will appreciate if you could make a short test.
>
> Thanks and Regards,
>
> Olivier
>
> 2010/3/10 Ralph Castain <rhc_at_[hidden]>
> Probably a bug - I don't recall if/when anyone actually tested that code path. I'll have a look...probably in the hostfile parser.
>
> What version are you using?
>
> On Mar 10, 2010, at 8:26 AM, Olivier Riff wrote:
>
>> Oops sorry I made the test too fast: it still does not work properly with several logins:
>>
>> I start on user1's machine:
>> mpirun -np 2 --machinefile machinefile.txt MyProgram
>>
>> with machinefile:
>> user1_at_machine1 slots=1
>> user2_at_machine2 slots=1
>>
>> and I got :
>> user1_at_machine2 password prompt ?! (there is no user1 account on machine2...)
>>
>> My problem is still open... why is there a connection attempt to machine2 with user1 ...
>> Has somebody an explanation ?
>>
>> Thanks,
>>
>> Olivier
>>
>>
>> 2010/3/10 Olivier Riff <oliriff_at_[hidden]>
>> OK, it works now thanks. I forgot to add the slots information in the machinefile.
>>
>> Cheers,
>>
>> Olivier
>>
>>
>>
>> 2010/3/10 Ralph Castain <rhc_at_[hidden]>
>>
>> It is the exact same syntax inside of the machinefile:
>>
>> user1_at_machine1 slots=4
>> user2_at_machine2 slots=3
>> ....
>>
>>
>> On Mar 10, 2010, at 5:41 AM, Olivier Riff wrote:
>>
>> > Hello,
>> >
>> > I am using openmpi on several machines which have different user accounts and I cannot find a way to specify the login for each machine in the machinefile passed to mpirun.
>> > The only solution I found is to use the -host argument of mpirun, such as:
>> > mpirun -np 2 --host user1_at_machine1,user2_at_machine2 MyProgram
>> > which is very inconvenient with a lot of machines.
>> >
>> > Is there a way to do the same using a machinefile text? :
>> > mpirun -np 2 -machinefile machinefile.txt MyProgram
>> >
>> > I cannot find the appropriate syntax for specifying a user in machinefile.txt...
>> >
>> > Thanks in advance,
>> >
>> > Olivier
>> >
>> > _______________________________________________
>> > users mailing list
>> > users_at_[hidden]
>> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>>
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