Author: Ricardo Gibert
Date: 05:25:51 09/10/03
Go up one level in this thread
On September 09, 2003 at 23:47:20, Christophe Theron wrote: >On September 09, 2003 at 09:01:57, Arshad Syed wrote: > >>I read in a post here that tweaking NPS a bit here and there wouldn't really >>matter since the node depth wouldn't increase with a marginal increase in NPS. >>The NPS would have to drastically increase in order to increase the depth by a >>level, at depths > 6. >> >>Please give me your opinion on this, since I don't want to be tweaking code >>unnecessarily, especially if it is not going to make a difference. >> >>Thanks, >>Arshad > > > >Doubling the NPS without changing the rest of the program typically means a 60 >to 70 elo points improvement (70 was the average for SSDF hardware from a few >years ago, but I tend to believe that with faster hardware the gain is less - >that remains to be seen). > >So 100% faster -> +65 elo points > 50% faster -> +33 elo points (half of 65) > 25% faster -> +16 elo points >...and so on. This should be: 100% faster -> +65 elo points 50% faster -> +38 elo points (*not* half of 65) 25% faster -> +21 elo points See Martin's post. > >You do not need to think in term of ply increase from NPS increase: it does not >make much sense for small NPS gains. > >But you can think in term of elo gain, even for the smallest speed improvements. >This tells you more than the gain in ply depth in my opinion. > > > > Christophe
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