On 9/12/2014 9:22 AM, JR Cary wrote:
On 9/12/14, 7:27 AM, Tim Prince wrote:
On 9/12/2014 6:14 AM, JR Cary wrote:
This must be a very old topic.
I would like to run mpi with one process per node, e.g., using
-cpus-per-rank=1. Then I want to use openmp inside of that.
But other times I will
Hmmm...well, the info is there. There is an envar OMPI_COMM_WORLD_LOCAL_SIZE
which tells you how many procs are on this node. If you tell your proc how many
cores (or hwthreads) to use, it would be a simple division to get what you want.
You could also detect the number of cores or hwthreads via
On 9/12/14, 7:27 AM, Tim Prince wrote:
On 9/12/2014 6:14 AM, JR Cary wrote:
This must be a very old topic.
I would like to run mpi with one process per node, e.g., using
-cpus-per-rank=1. Then I want to use openmp inside of that.
But other times I will run with a rank on each physical core.
On 9/12/2014 6:14 AM, JR Cary wrote:
This must be a very old topic.
I would like to run mpi with one process per node, e.g., using
-cpus-per-rank=1. Then I want to use openmp inside of that.
But other times I will run with a rank on each physical core.
Inside my code I would like to detect wh
This must be a very old topic.
I would like to run mpi with one process per node, e.g., using
-cpus-per-rank=1. Then I want to use openmp inside of that.
But other times I will run with a rank on each physical core.
Inside my code I would like to detect which situation I am in.
Is there an open
