Ralph Castain <rhc.open...@gmail.com> writes: > I confirmed that things are working as intended.
I could have been more explicit saying so before. > If you have 12 cores on a machine, and you do > > mpirun -map-by socket:PE=2 <foo> > > we will execute 6 copies of foo on the node because 12 cores/2pe/core = 6 > procs. For what it's worth, you need to be a bit careful testing. 1.6 works on a single node without --loadbalance. I'm fairly sure what Mark sees will be the result of messing with the SGE internals, possibly combined with SGE core binding/cpuset restrictions. I've always found that confusing, and preferred to let mpirun do the work, but there's no accounting for things in Yorkshire.
