On Thu, Dec 10, 2015 at 5:25 PM, mohammed shambakey <[email protected]> wrote: > Hi > > when running pw.x on a multi-node cluster using OpenMP+MPI, is it possible > to record each thread id, running on which core, in which node?
not without using special settings and special libraries. both MPI ranks and OpenMP thread-ids are by default 100% hardware agnostic and are assigned to individual cores based on the kernel scheduling algorithms, thus those can change quite rapidly. many MPI and OpenMP implementations allow to use OS-specific APIs to assign "affinity" of an MPI rank or a thread to specific cores (or rather provide an assignment pattern). axel. > > Regards > > -- > Mohammed > > _______________________________________________ > Pw_forum mailing list > [email protected] > http://pwscf.org/mailman/listinfo/pw_forum -- Dr. Axel Kohlmeyer [email protected] http://goo.gl/1wk0 College of Science & Technology, Temple University, Philadelphia PA, USA International Centre for Theoretical Physics, Trieste. Italy. _______________________________________________ Pw_forum mailing list [email protected] http://pwscf.org/mailman/listinfo/pw_forum
