Okay, I can't promise when I'll get to it, but I'll try to have it in time for
OMPI v5.
On Jan 29, 2021, at 1:30 AM, Luis Cebamanos via users mailto:users@lists.open-mpi.org> > wrote:
Hi Ralph,
It would be great to have it for load balancing issues. Ideally one could do
something like --
Hi Ralph,
It would be great to have it for load balancing issues. Ideally one
could do something like --bind-to:N where N is the block size, 4 in this
case.
mpirun -np 40 --map-by ppr:40:node --bind-to core:4
I think it would be interesting to have it. Of course, I can always use
srun but not
Hmmm...well, the proc distribution is easy as you would just --map-by node. The
tricky thing is assigning the ranks in the pattern you desire. We definitely
don't have that pattern in our ranking algo today, though it wouldn't be hard
to add.
However, that wouldn't be available until OMPI v5 wa
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
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 3:0
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. Woul
