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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: 2010-03-10 10:53:50


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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