> On May 3, 2015, at 5:54 AM, XingFENG <xingf...@cse.unsw.edu.au> wrote: > > By changing the order of hosts, the program now can run on 6 machines with 2 > accounts. > > But it is very weird. Why the order of hosts would matter? Could any one > refer something about how openmpi work, please? I have searched on the > Internet but nothing related is found.
If you add —mca plm_rsh_no_tree_spawn 1 to your cmd line, you’ll probably be okay. The rsh launch is typically done in a tree topology, and so you get ssh from one backend node to another. If you don’t have password-less ssh from every machine to each other machine, then you can get the behavior you describe. Adding that parameter will cause all the ssh commands to come directly from mpirun. > > > On Sun, May 3, 2015 at 10:03 PM, XingFENG <xingf...@cse.unsw.edu.au > <mailto:xingf...@cse.unsw.edu.au>> wrote: > I got some problems while running MPI programs with different account. > I have done the following things. > > 1. I have set password-less connection between these machines. > 2. I have specified user names in host file. > 3. I have successfully run the program on two machines with two different > accounts. > > But when I tried on other machines with the two accounts, openmpi stuck at > the very beginning. There is no error information. It seems openmpi falls in > some infinite loop. Any help would be greatly appreciated. > > On Wed, Apr 15, 2015 at 6:04 AM, Jeff Squyres (jsquyres) <jsquy...@cisco.com > <mailto:jsquy...@cisco.com>> wrote: > 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 > > <mailto:r...@open-mpi.org>> wrote: > > > > > >> On Apr 13, 2015, at 5:47 PM, XingFENG <xingf...@cse.unsw.edu.au > >> <mailto: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 > >> <mailto:r...@open-mpi.org>> wrote: > >> > >>> On Apr 13, 2015, at 6:56 AM, Maxime Boissonneault > >>> <maxime.boissonnea...@calculquebec.ca > >>> <mailto: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 > >>>>> <mailto: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 > >>>>>>> <mailto: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 <tel:%28%2B61%29%20413%20857%20288> > >>>>>>> _______________________________________________ > >>>>>>> users mailing list > >>>>>>> us...@open-mpi.org <mailto:us...@open-mpi.org> > >>>>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >>>>>>> <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 > >>>>>>> <http://www.open-mpi.org/community/lists/users/2015/04/26687.php> > >>>>>> _______________________________________________ > >>>>>> users mailing list > >>>>>> us...@open-mpi.org <mailto:us...@open-mpi.org> > >>>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >>>>>> <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 > >>>>>> <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 <mailto:us...@open-mpi.org> > >>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >>>>> <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 > >>>>> <http://www.open-mpi.org/community/lists/users/2015/04/26691.php> > >>>> _______________________________________________ > >>>> users mailing list > >>>> us...@open-mpi.org <mailto:us...@open-mpi.org> > >>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >>>> <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 > >>>> <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 <mailto:us...@open-mpi.org> > >>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >>> <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 > >>> <http://www.open-mpi.org/community/lists/users/2015/04/26693.php> > >> > >> > >> _______________________________________________ > >> users mailing list > >> us...@open-mpi.org <mailto:us...@open-mpi.org> > >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >> <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 > >> <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 <tel:%28%2B61%29%20413%20857%20288> > >> _______________________________________________ > >> users mailing list > >> us...@open-mpi.org <mailto:us...@open-mpi.org> > >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > >> <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 > >> <http://www.open-mpi.org/community/lists/users/2015/04/26707.php> > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org <mailto:us...@open-mpi.org> > > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > > <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 > > <http://www.open-mpi.org/community/lists/users/2015/04/26708.php> > > > -- > Jeff Squyres > jsquy...@cisco.com <mailto:jsquy...@cisco.com> > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > <http://www.cisco.com/web/about/doing_business/legal/cri/> > > _______________________________________________ > users mailing list > us...@open-mpi.org <mailto:us...@open-mpi.org> > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > <http://www.open-mpi.org/mailman/listinfo.cgi/users> > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/04/26729.php > <http://www.open-mpi.org/community/lists/users/2015/04/26729.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 <tel:%28%2B61%29%20413%20857%20288> > > > -- > 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 <mailto:us...@open-mpi.org> > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > <http://www.open-mpi.org/mailman/listinfo.cgi/users> > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/05/26831.php > <http://www.open-mpi.org/community/lists/users/2015/05/26831.php>
