on linux, you can look at /proc/self/status and search allowed_cpus_list or you can use the sched_getaffinity system call
note that in some (hopefully rare)cases, this will return different results than hwloc On Sunday, September 13, 2015, Saliya Ekanayake <esal...@gmail.com> wrote: > Thank you, I'll try this. Also, is there a way to know which core a > process is bound to within the program other than executing something like > taskset <PID> from program? > > On Sun, Sep 13, 2015 at 10:05 AM, Ralph Castain <r...@open-mpi.org > <javascript:_e(%7B%7D,'cvml','r...@open-mpi.org');>> wrote: > >> Actually, the error was correct - it was me that was incorrect. The >> correct set of options would be: >> >> —map-by ppr:12_node —bind-to core —cpu-set=0,2,4,… >> >> Sorry about the confusion >> >> >> On Sep 13, 2015, at 2:43 AM, Ralph Castain <r...@open-mpi.org >> <javascript:_e(%7B%7D,'cvml','r...@open-mpi.org');>> wrote: >> >> The rankfile will certainly do it, but that error is a bug and I’ll have >> to fix it. >> >> >> On Sep 13, 2015, at 1:10 AM, Saliya Ekanayake <esal...@gmail.com >> <javascript:_e(%7B%7D,'cvml','esal...@gmail.com');>> wrote: >> >> I could get it working by manually generating a rankfile all the ranks >> and not using any --map-by options. >> >> I'll try the --map-by core as well >> >> On Sun, Sep 13, 2015 at 3:59 AM, Tobias Kloeffel <tobias.kloef...@fau.de >> <javascript:_e(%7B%7D,'cvml','tobias.kloef...@fau.de');>> wrote: >> >>> Hi, >>> use: --map-by core >>> >>> regards, >>> Tobias >>> >>> >>> On 09/13/2015 09:41 AM, Saliya Ekanayake wrote: >>> >>> I tried, >>> >>> --map-by ppr:12:node --slot-list 0,2,4,6,8,10,12,14,16,18,20,22 >>> --bind-to core -np 12 >>> >>> but it complains, >>> >>> "Conflicting directives for binding policy are causing the policy >>> to be redefined: >>> >>> New policy: socket >>> Prior policy: CORE >>> >>> Please check that only one policy is defined. >>> " >>> >>> On Sun, Sep 13, 2015 at 2:57 AM, Ralph Castain <r...@open-mpi.org >>> <javascript:_e(%7B%7D,'cvml','r...@open-mpi.org');>> wrote: >>> >>>> Try something like this instead: >>>> >>>> —map-by ppr:12:node —bind-to core —slot-list=0,2,4,6,8,… >>>> >>>> You’ll have to play a bit with the core numbers in the slot-list to get >>>> the numbering right as I don’t know how your machine numbers them, and I >>>> can’t guarantee it will work - but it’s worth a shot. If it doesn’t, then I >>>> may have to add an option for such purposes >>>> >>>> Ralph >>>> >>>> On Sep 12, 2015, at 7:39 PM, Saliya Ekanayake <esal...@gmail.com >>>> <javascript:_e(%7B%7D,'cvml','esal...@gmail.com');>> wrote: >>>> >>>> Hi, >>>> >>>> We've a machine as in the following picture. I'd like to run 12 MPI >>>> procs per node each bound to 1 core, but like shown in blue dots in the >>>> pictures. I can use the following command to run 12 procs per node, but >>>> PE=1 makes all the 12 processes will run in just 1 socket. PE=2 will make a >>>> process bind to 2 cores, which is not what I want. >>>> >>>> --map-by ppr:12:node:PE=1,SPAN >>>> >>>> Thank you, >>>> Saliya >>>> >>>> <image.png> >>>> >>>> -- >>>> Saliya Ekanayake >>>> Ph.D. Candidate | Research Assistant >>>> School of Informatics and Computing | Digital Science Center >>>> Indiana University, Bloomington >>>> Cell 812-391-4914 >>>> <http://saliya.org/>http://saliya.org >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org <javascript:_e(%7B%7D,'cvml','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/2015/09/27558.php >>>> >>>> >>>> >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org <javascript:_e(%7B%7D,'cvml','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/2015/09/27559.php >>>> >>> >>> >>> >>> -- >>> Saliya Ekanayake >>> Ph.D. Candidate | Research Assistant >>> School of Informatics and Computing | Digital Science Center >>> Indiana University, Bloomington >>> Cell 812-391-4914 >>> http://saliya.org >>> >>> >>> _______________________________________________ >>> users mailing listus...@open-mpi.org >>> <javascript:_e(%7B%7D,'cvml','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/2015/09/27560.php >>> >>> >>> -- >>> M.Sc. Tobias Klöffel >>> ======================================================= >>> Interdisciplinary Center for Molecular Materials (ICMM) >>> and Computer-Chemistry-Center (CCC) >>> Department Chemie und Pharmazie >>> Friedrich-Alexander-Universität Erlangen-Nürnberg >>> Nägelsbachstr. 25 >>> D-91052 Erlangen, Germany >>> >>> Room: 2.307 >>> Phone: +49 (0) 9131 / 85 - 20421 >>> Fax: +49 (0) 9131 / 85 - 26565 >>> >>> ======================================================= >>> >>> >>> E-mail: tobias.kloef...@fau.de >>> <javascript:_e(%7B%7D,'cvml','tobias.kloef...@fau.de');> >>> >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org <javascript:_e(%7B%7D,'cvml','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/2015/09/27561.php >>> >> >> >> >> -- >> Saliya Ekanayake >> Ph.D. Candidate | Research Assistant >> School of Informatics and Computing | Digital Science Center >> Indiana University, Bloomington >> Cell 812-391-4914 >> http://saliya.org >> _______________________________________________ >> users mailing list >> us...@open-mpi.org <javascript:_e(%7B%7D,'cvml','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/2015/09/27562.php >> >> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org <javascript:_e(%7B%7D,'cvml','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/2015/09/27564.php >> > > > > -- > Saliya Ekanayake > Ph.D. Candidate | Research Assistant > School of Informatics and Computing | Digital Science Center > Indiana University, Bloomington > Cell 812-391-4914 > http://saliya.org >
