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Old 2021-07-09, 10:49   #6
"David Kirkby"
Jan 2021
Althorne, Essex, UK

26·7 Posts

Originally Posted by axn View Post
How much L3 does your CPUs have? The more L3 you have, the less the impact of poor memory bandwidth.

Also, previously, was the memory running at 2400 only or was it faster?

Finally, if truly 12 ram channels are active, you might look at other configurations with more workers.
There's 35.75 MB of L3 cache per CPU. The 2400 MHz is a limitation of the CPU - other CPUs in the Xeon gold or platinum range run the RAM up to 2933 MHz, but they are quite expensive CPUs, whereas these CPUs are quite cheap. I've benchmarked more workers (I tried, 1, 2, 3 .. 52). But 4 workers gives optimal throughput.
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