As others have said, there's a million things that could be going on here.
What InfiniBand software stack are you using? Are you using the RPMs
that come with CentOS 7, or are you using the lated version of OFED
downloaded directly from Mellanox. For the past year or so, I've been
hearing tha
Found out what was wrong...
Turned out the hardware was delivered with 15 of the 16 memory slots
populated
No wonder we had performance issues!
Anyway, thanks a a lot, all who answered!
/jon
On 02/29/2016 06:48 PM, Josef Weidendorfer wrote:
Am 28.02.2016 um 16:27 schrieb Jon Tegner:
F
Am 28.02.2016 um 16:27 schrieb Jon Tegner:
> For one of our applications (CFD/OpenFOAM) we have noticed that the
> calculation runs faster using 12 cores on 4 nodes compared to when using
> 24 cores on 4 nodes.
If this is OpenMP within each node...
This may be an effect of first touch going wrong
