eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9826
Location: almost Mile High in the USA
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 Posted: Sat Sep 14, 2024 8:06 am Post subject: running core limited kernel on machine with lots of cores... |
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I might need to experiment with this but not sure what happens:
I've a quad core SMT machine (well, two ancient i7's) so they do 8 threads. So I built kernels with 8 threads max.
Now I have a 10 core SMT capable CPU, so it supports 20 threads.
If I use the 8-thread kernel, will it use 8 physical cores of the 10-core CPU or could it nondeterministically choose 8 threads that could be cores or SMT cores?
I suspect this is the same problem as my 4-core kernels (for my Core2Quads) running on my 8-thread processor but I never tried it... I would hope it would choose to run cores without using SMT but I'm not sure how this works... But it's not the same problem as 1-core kernels of course...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching? |
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Kernel & Hardware
