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Forum: Hardware

April 6, 2018, 10:14

Replies: 8

Abysmal performance of 64 cores opteron based workstation for CFD

Views: 2,666

Posted By flotus1

I just realized that I (we) overlooked something:...

I just realized that I (we) overlooked something:

Memory population is off. Each node should have 32GB of RAM for optimal performance.
Open the case and re-seat your DIMMs according to the...

Forum: Hardware

April 5, 2018, 17:20

Replies: 8

Abysmal performance of 64 cores opteron based workstation for CFD

Views: 2,666

Posted By flotus1

Ok it is worse than I thought. Those segmented...

Ok it is worse than I thought. Those segmented caches mess things up even more. I did not expect 8 NUMA nodes on this system.

But to get some grip on the problem, I think you should first...

Forum: Hardware

April 5, 2018, 09:23

Replies: 8

Abysmal performance of 64 cores opteron based workstation for CFD

Views: 2,666

Posted By flotus1

I never had the chance to play with this...

I never had the chance to play with this architecture, so I might not be of much help here.
But my 2 cents are: enabling node interleaving for a NUMA-aware application (like OpenFOAM) is...

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