What is the Maximum number of threads supported by folding?

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Zarck
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What is the Maximum number of threads supported by folding?

Post by Zarck »

What is the maximum number of threads supported by folding ?

With fah-client_8.1.18_AMD64.exe my pc 88 threads shows only 41 threads? a solution ?

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Re: What is the Maximum number of threads supported by folding?

Post by calxalot »

For v8, the maximum threads is defined by the work unit. Most WU seem to have 32 threads max. I have seen 64 max in the assignment info. But my system is 16c/32t.

41 seems very odd. Large primes are bad.
How many GPUs do you have folding?
Do you have hyperthreading disabled?
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Re: What is the Maximum number of threads supported by folding?

Post by calxalot »

Also, there are a couple extra housekeeping threads in a running core.
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Re: What is the Maximum number of threads supported by folding?

Post by Joe_H »

I do know an earlier version of the CPU folding core based on GROMACS was tested to either 128 or 256 compute threads. But it takes a WU that has a very large number of component atoms to take advantage of that many threads. Most of the current CPU projects are too small to efficiently use more than 16 or 32 threads and are limited to that at assignment time.
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Re: What is the Maximum number of threads supported by folding?

Post by toTOW »

No limitation on Linux as far as I remember ... Windows v7 client (or core ... or both ... I don't remember) had a limit of 32 threads because of the libraries used to build it, but I have no idea about v8 client ...
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Re: What is the Maximum number of threads supported by folding?

Post by calxalot »

V8 is supposed to detect the true available logical cpu count. It might still download old windows cores that were compiled with the old library with a max 32 threads limit.
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Re: What is the Maximum number of threads supported by folding?

Post by Zarck »

For me with Windows 11 64 pro...
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Re: What is the Maximum number of threads supported by folding?

Post by Zarck »

https://youtu.be/2LMlYpEE0lI

96 cores / 192 threads.

:mrgreen:
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Re: What is the Maximum number of threads supported by folding?

Post by bikeaddict »

An absolute *bargain* at only $9,999 for the CPU alone.

You could build 8-10 Ryzen 9 7950X 16-core machines for the price of one Threadripper. But they would use more power and take up a lot more space.
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Re: What is the Maximum number of threads supported by folding?

Post by Zarck »

And 3 x RTX6000 = 18176 cuda cores x 3 = 54288 cuda cores.
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Re: What is the Maximum number of threads supported by folding?

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