Eloisa
The general consensus (I heard that as well from TACC staff) is that a KNL node is about as fast as a modern Xeon node. That agrees with what I measured on Cori.
The per-core performance is lower (maybe by a factor of two or three) because the cores are slower, but there are also more cores.
-erik
On Wed, Feb 22, 2017 at 5:53 PM, Haas, Roland rhaas@illinois.edu wrote:
Hello Eloisa,
yup, widely off. David with Erik's help had a try at ET on KNL (stampede) and you can find some information here: https://docs.einsteintoolkit. org/et-docs/2017_MHD_Workshop
Yours, Roland
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From: users-bounces@einsteintoolkit.org [users-bounces@einsteintoolkit.org] on behalf of Eloisa Bentivegna [eloisa.bentivegna@ct.infn.it] Sent: Wednesday, February 22, 2017 16:24 To: Einstein Toolkit Users Subject: [Users] ET on KNL.
Dear all,
I was wondering if anybody is using the ET on the Knights Landing architecture, and what sort of performance one could expect to get. Admittedly without much optimization, I am measuring a performance per core which is almost two orders of magnitude smaller than that of a Broadwell Xeon. Does this sound wildly off?
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