Yes, they share L2 and L1i.
Brice
Le 30/08/2017 02:16, Gilles Gouaillardet a écrit :
> Prentice,
>
> could you please run
> lstopo --of=xml
> and post the output ?
>
> a simple workaround could be to bind each task to two consecutive cores
> (assuming two consecutive cores share the same FPU, w
Prentice,
could you please run
lstopo --of=xml
and post the output ?
a simple workaround could be to bind each task to two consecutive cores
(assuming two consecutive cores share the same FPU, will know for sure
after i check the topology)
that can be achieved with
mpirun --map-by socket:span,PE=
I'd like to follow up to my own e-mail...
After playing around with the --bind-to options, it seems there is no
way to do this with AMD CMT processors, since they are actual physical
cores, and not hardware threads that appear as "logical cores" as with
Intel processors with hyperthreading. Wh
OpenMPI Users,
I am using AMD processocers with CMT, where two cores constitute a
module, and there is only one FPU per module, so each pair of cores has
to share a single FPU. I want to use only one core per module so there
is no contention between cores in the same module for the single FPU
