That's right Ralph!
On 28/01/2021 23:13, Ralph Castain via users wrote:
Trying to wrap my head around this, so let me try a 2-node example. You want
(each rank bound to a single core):
ranks 0-3 to be mapped onto node1
ranks 4-7 to be mapped onto node2
ranks 8-11 to be mapped onto node1
ranks 12-15 to be mapped onto node2
etc.etc.
Correct?
On Jan 28, 2021, at 3:00 PM, Luis Cebamanos via users
<users@lists.open-mpi.org> wrote:
Hello all,
What are the options for binding MPI tasks on a blocks of cores per
node/socket/numa in a round-robin fashion? Say I want to fully populate 40 core
sockets on dual-socket nodes but in a round-robin fashion binding 4 cores on
the first node, then 4 cores on the next, and so on. Would be ``--bind-to
core``?
srun can do this with ``distribution=plane`` so one could do ``srun
--distribution=plane=4``.
cheers
