General Category > Hardware

Dual Epyc 9654 experience?

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hrvojezg00:
Hi, Is anyone here running a dual Epyc Genoa system, preferably 9654 or 9754`s? I wonder if the scale is better than with EPYC 7702`s 1 CPU vs. 2 CPU systems.

andrew1988:
dual cpu system is not optimized with corona 10 and above so far
maybe windows process group is the culprit  i am not sure


--- Quote from: hrvojezg00 on 2024-01-16, 10:03:52 ---Hi, Is anyone here running a dual Epyc Genoa system, preferably 9654 or 9754`s? I wonder if the scale is better than with EPYC 7702`s 1 CPU vs. 2 CPU systems.

--- End quote ---

webuilddreams:
Hi, we have a single processor AMD epyc 9754 with a supermicro mobo and 384 GB memory DDR5, it is fast as hell BUT the geometry fase is 10x slower than my old pc (dual intel xeon E5-2699V4 arround 8 years old!!), we are still trying to figure out why, and we render a lot of animation so this phase comes back in every frame, we loose between 60 and 120 seconds per frame!

Nejc Kilar:

--- Quote from: webuilddreams on 2024-03-11, 11:49:43 ---Hi, we have a single processor AMD epyc 9754 with a supermicro mobo and 384 GB memory DDR5, it is fast as hell BUT the geometry fase is 10x slower than my old pc (dual intel xeon E5-2699V4 arround 8 years old!!), we are still trying to figure out why, and we render a lot of animation so this phase comes back in every frame, we loose between 60 and 120 seconds per frame!

--- End quote ---

Hmm that really shouldn't be the case imho - yes the 2699v4 has a 500mhz higher boost clock but the IPC has come a long way in the 10 years since it was released.

Could you please double check what frequency is being reported (and core utilization) during scene parsing? Not all the cores should be busy but you should be close to at least 3ghz and that would indicate it is not the hardware at fault.

webuilddreams:
Hi Nejc Kilar, we checked it and in de screenshot that was taking during the geomtery phase u see that the core speed is arround 3 GHz and it utilizes 70% of the cores plus the next time we render the same it gets worse, from 0:39 min first time to a stunning 3:05 seconds (after 5 renders same cam) only for the geometry phase!

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