On Mar 2, 2012, at 11:52 AM, Paul Kapinos wrote:
> Hello Ralph,
> I've some questions on placement and -cpus-per-rank.
>
>> First, use the --cpus-per-rank option to separate the ranks from each other.
>> In other words, instead of --bind-to-socket -bysocket, you do:
>> -bind-to-core -cpus-per-r
Hello Ralph,
I've some questions on placement and -cpus-per-rank.
First, use the --cpus-per-rank option to separate the ranks from each other.
In other words, instead of --bind-to-socket -bysocket, you do:
-bind-to-core -cpus-per-rank N
This will take each rank and bind it to a unique set of
It sounds like you are running into an issue with the Linux scheduler. I have
an item to add an API "bind-this-thread-to-", but that won't be
available until sometime in the future.
Couple of things you could try in the meantime. First, use the --cpus-per-rank
option to separate the ranks from
Dear Open-MPI users,
Our code is currently running Open-MPI (1.5.4) with SLURM on a NUMA
machine (2 sockets by nodes and 4 cores by socket) with basically two
levels of implementation for Open-MPI:
- at lower level n "Master" MPI-processes (one by socket) are
simultaneously runned by dividing c
