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NNue variety

Posted: Tue Jul 21, 2020 6:04 pm
by stavros
anyone knowus if the NNue is determistic? like 1 core or adds some variety like multi core?

Re: NNue variety

Posted: Tue Jul 21, 2020 6:13 pm
by zullil
stavros wrote:
Tue Jul 21, 2020 6:04 pm
anyone knowus if the NNue is determistic? like 1 core or adds some variety like multi core?
I see no reason why a single-threaded search using a fixed nn.bin should be non-deterministic. More than one thread should be non-deterministic. All that the nn is doing is replacing the evaluation.

Re: NNue variety

Posted: Tue Jul 21, 2020 6:33 pm
by brianr
Even single thread can be somewhat variable if search is based on time.
For fixed nodes (assuming nothing the the hash tables), it should be exactly the same.

Re: NNue variety

Posted: Tue Jul 21, 2020 6:39 pm
by stavros
so the multi thread gives some variery like multi core A/B engines?

Re: NNue variety

Posted: Tue Jul 21, 2020 6:40 pm
by Raphexon
Yes, it's exactly the same as regular Stockfish. Except for the eval ofcourse.