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Old 2021-03-05, 20:36   #166
kriesel
 
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prime95 on Windows 10 gave mostly 2 cores/worker optimal, until reaching large exponents (~300M). But latency can be long compared to assignment expiration. See second attachment of https://www.mersenneforum.org/showpo...4&postcount=11 for prime95/win10 exhaustive benchmark, for comparison to any ubuntu/mprime results to follow.

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Old 2021-03-05, 21:27   #167
ewmayer
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Quote:
Originally Posted by kriesel View Post
prime95 on Windows 10 gave mostly 2 cores/worker optimal, until reaching large exponents (~300M). But latency can be long compared to assignment expiration. See second attachment of https://www.mersenneforum.org/showpo...4&postcount=11 for prime95/win10 exhaustive benchmark, for comparison to any ubuntu/mprime results to follow.
Thanks, though as usual I needed reading glasses. :)

My own rule of thumb for manycore-system runs is to go with whichever combo has the fewest #workers and yields at least 95% of the maximum total throughput, to keep completion times reasonable.
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