Sorry for slow response - was away for awhile. What version of OMPI are you using?
> On Feb 8, 2017, at 1:59 PM, Allan Ma <mahe6...@gmail.com> wrote: > > Hello, > > I'm designing a program on a dual socket system that needs the parent process > and spawned child process to be at least running on (or bound to) the cores > of the same socket in the same node. > > I wonder if anyone knows how to specify the core binding or socket binding > when spawning a single process using MPI_COMM_Spawn. > > Currently I tried using the setting key 'host' in mpiinfo when passing it to > Spawn and it appears to be working, but I don't know how to specify exactly > the logical core number to run on. When I bind processes to sockets when > starting with mpirun, I used the -cpu-set option for setting to the core > number in the desired socket. > > Also, I was just checking the manual here: > > https://www.open-mpi.org/doc/v2.0/man3/MPI_Comm_spawn.3.php#toc7 > <https://www.open-mpi.org/doc/v2.0/man3/MPI_Comm_spawn.3.php#toc7> > > I found there is a "mapper" key in the MPI_INFO that might be useful in my > case: > > mapper char* Mapper to be used for this job > > I wonder if there's any more detailed documentation or any example on how to > use this mapper key. > > Thanks > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/users
_______________________________________________ users mailing list users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/users
