Author: Christophe Theron
Date: 20:47:20 09/09/03
Go up one level in this thread
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.
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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