NNue variety

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stavros
Posts: 160
Joined: Tue Dec 02, 2014 12:29 am

NNue variety

Post by stavros » Tue Jul 21, 2020 6:04 pm

anyone knowus if the NNue is determistic? like 1 core or adds some variety like multi core?

zullil
Posts: 6442
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: NNue variety

Post by zullil » Tue Jul 21, 2020 6:13 pm

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.

brianr
Posts: 451
Joined: Thu Mar 09, 2006 2:01 pm

Re: NNue variety

Post by brianr » Tue Jul 21, 2020 6:33 pm

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.

stavros
Posts: 160
Joined: Tue Dec 02, 2014 12:29 am

Re: NNue variety

Post by stavros » Tue Jul 21, 2020 6:39 pm

so the multi thread gives some variery like multi core A/B engines?

Raphexon
Posts: 326
Joined: Sun Mar 17, 2019 11:00 am
Full name: Henk Drost

Re: NNue variety

Post by Raphexon » Tue Jul 21, 2020 6:40 pm

Yes, it's exactly the same as regular Stockfish. Except for the eval ofcourse.

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