You can also specify per-machine usernames in $HOME/.ssh/config. See ssh_config(5).
> On Apr 13, 2015, at 9:19 PM, Ralph Castain <r...@open-mpi.org> wrote: > > >> On Apr 13, 2015, at 5:47 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote: >> >> Thanks for all who joined the discussion. >> Yes, I meant to run the job under both accounts at the same time. >> >> Hi, Ralph, >> >> I have searched about specifying username in hostfile and got no related >> page. Could you give a sample of specifying username in hostfile, please? > > you just provide the host name as “username@host” > >> Another problem is do you also specify password in hostfile? > > > Good heavens, no! It has to be password-less ssh. Frankly, I doubt this will > work as I suspect ssh isn’t going to let you do it. > > >> >> On Tue, Apr 14, 2015 at 12:05 AM, Ralph Castain <r...@open-mpi.org> wrote: >> >>> On Apr 13, 2015, at 6:56 AM, Maxime Boissonneault >>> <maxime.boissonnea...@calculquebec.ca> wrote: >>> >>> Le 2015-04-13 09:54, Ralph Castain a écrit : >>>>> On Apr 13, 2015, at 6:52 AM, Maxime Boissonneault >>>>> <maxime.boissonnea...@calculquebec.ca> wrote: >>>>> >>>>> Just out of curiosity... how will OpenMPI start processes under different >>>>> accounts ? Through SSH while specifying different user names ? >>>>> I am assuming that no resource manager or scheduler will allow this. >>>> I’m assuming he just plans to run the entire job as the other user. >>>> Essentially, it would be the same as if his friend ran the job for him. >>> From this comment : >>> >>> My problem is that my account is limited to use 4 machines (I need more >>> machines to process data). I can borrow my friend's account and thus have >>> access to another 4 machines but I am not sure whether it works. >>> >>> I assumed that he wants to run the job under _both_ accounts at the same >>> time. >> >> I honestly don’t know if that would work. We do provide a way in the >> hostfile for someone to specify the username for a remote host, but you’d >> have to get the ssh system to accept it. Assuming the other username also >> has your host in its authorized keys, then I suppose it might work - I’ve >> never tried it myself. >> >> >>> >>> >>>>> My recommendation would be to contact your sysadmin and ask for an >>>>> exception instead of going through with this insanity (forgive the >>>>> judgement here). >>>> Agreed! >>>> >>>>> Maxime >>>>> >>>>> Le 2015-04-13 09:47, Ralph Castain a écrit : >>>>>> Let’s hope you sys admin doesn’t find out about it - they tend to take a >>>>>> dim view of sharing accounts! >>>>>> >>>>>> So long as the path and library path are set correctly, we won’t care. >>>>>> >>>>>> >>>>>>> On Apr 12, 2015, at 10:33 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote: >>>>>>> >>>>>>> Hi all, >>>>>>> >>>>>>> I am wondering if it is possible that MPI programs can be run on >>>>>>> machines with different account? >>>>>>> >>>>>>> I am doing experiments with some MPI programs on a cluster. My problem >>>>>>> is that my account is limited to use 4 machines (I need more machines >>>>>>> to process data). I can borrow my friend's account and thus have access >>>>>>> to another 4 machines but I am not sure whether it works. >>>>>>> >>>>>>> -- >>>>>>> Best Regards. >>>>>>> --- >>>>>>> Xing FENG >>>>>>> PhD Candidate >>>>>>> Database Research Group >>>>>>> >>>>>>> School of Computer Science and Engineering >>>>>>> University of New South Wales >>>>>>> NSW 2052, Sydney >>>>>>> >>>>>>> Phone: (+61) 413 857 288 >>>>>>> _______________________________________________ >>>>>>> users mailing list >>>>>>> us...@open-mpi.org >>>>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>>>>>> Link to this post: >>>>>>> http://www.open-mpi.org/community/lists/users/2015/04/26687.php >>>>>> _______________________________________________ >>>>>> users mailing list >>>>>> us...@open-mpi.org >>>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>>>>> Link to this post: >>>>>> http://www.open-mpi.org/community/lists/users/2015/04/26690.php >>>>> >>>>> -- >>>>> --------------------------------- >>>>> Maxime Boissonneault >>>>> Analyste de calcul - Calcul Québec, Université Laval >>>>> Ph. D. en physique >>>>> >>>>> _______________________________________________ >>>>> users mailing list >>>>> us...@open-mpi.org >>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>>>> Link to this post: >>>>> http://www.open-mpi.org/community/lists/users/2015/04/26691.php >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org >>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/users/2015/04/26692.php >>> >>> >>> -- >>> --------------------------------- >>> Maxime Boissonneault >>> Analyste de calcul - Calcul Québec, Université Laval >>> Ph. D. en physique >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>> Link to this post: >>> http://www.open-mpi.org/community/lists/users/2015/04/26693.php >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >> Link to this post: >> http://www.open-mpi.org/community/lists/users/2015/04/26694.php >> >> >> >> -- >> Best Regards. >> --- >> Xing FENG >> PhD Candidate >> Database Research Group >> >> School of Computer Science and Engineering >> University of New South Wales >> NSW 2052, Sydney >> >> Phone: (+61) 413 857 288 >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >> Link to this post: >> http://www.open-mpi.org/community/lists/users/2015/04/26707.php > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/04/26708.php -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
