your MPI processes can use the full core, not
just a single hardware thread.
*From:* users on behalf of Luis
Cebamanos via users
*Sent:* Friday, September 8, 2023 7:10 AM
*To:* Ralph Castain via users
*Cc:* Luis Cebam
them in the BIOS, and then each of your MPI processes can use
the full core, not just a single hardware thread.From: users
on behalf of Luis
Cebamanos via users Sent: Friday, September 8, 2023
7:10 AM To: Ralph Castain via users Cc: Luis Cebamanos
Subject: [OMPI users]
ers
*Cc:* Luis Cebamanos
*Subject:* [OMPI users] Binding to thread 0
Hello,
Up to now, I have been using numerous ways of binding with wrappers
(numactl, taskset) whenever I wanted to play with core placing.
Another way I have been using is via -rankfile, however I notice that
some ranks ju
hread.
*From:* users on behalf of Luis
Cebamanos via users
*Sent:* Friday, September 8, 2023 7:10 AM
*To:* Ralph Castain via users
*Cc:* Luis Cebamanos
*Subject:* [OMPI users] Binding to thread 0
Hello,
Up to now, I have been using numerous ways of bi
lf of Luis Cebamanos via
users
Sent: Friday, September 8, 2023 7:10 AM
To: Ralph Castain via users
Cc: Luis Cebamanos
Subject: [OMPI users] Binding to thread 0
Hello,
Up to now, I have been using numerous ways of binding with wrappers (numactl,
taskset) whenever I wanted to play with core pl
Luis,
you can pass the --bind-to hwthread option in order to bind on the first
thread of each core
Cheers,
Gilles
On Fri, Sep 8, 2023 at 8:30 PM Luis Cebamanos via users <
users@lists.open-mpi.org> wrote:
> Hello,
>
> Up to now, I have been using numerous ways of binding with wrappers
> (numa
Hello,
Up to now, I have been using numerous ways of binding with wrappers
(numactl, taskset) whenever I wanted to play with core placing. Another way
I have been using is via -rankfile, however I notice that some ranks jump
from thread 0 to thread 1 on SMT chips. I can control this with numactl f
