An interesting point. Do you think that when testing at fast time controls that caches should be reduced so as to work approximately the same as at normal time control? Do you do this in your testing?michiguel wrote:Then again, at fast pace when HT replacement is not critical.
Stockfish 1.7.1 update available
Moderator: Ras
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Re: Stockfish 1.7.1 update available
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Re: Stockfish 1.7.1 update available
I think I may not be a huge deal, but it is a detail that is worth paying attention to. I use 8 MB of hash tables in my own testing if I remember correctly (I have the data at home).Dirt wrote:An interesting point. Do you think that when testing at fast time controls that caches should be reduced so as to work approximately the same as at normal time control? Do you do this in your testing?michiguel wrote:Then again, at fast pace when HT replacement is not critical.
Miguel
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Re: Stockfish 1.7.1 update available
I have tried both 1.7 and 1.7.1 in few closed midgame positions.Dann Corbit wrote:The new stockfish is really excellent against closed and semi-closed positions. It's very nice to have another option to analyze these positions.
Almost all the time, evaluation value was bigger than what Rybka
or Naum or Shredder or other engine reports. And it changes very
rapidly. Suggested moves were also different.
No DC x64 version this time?
Best,
hi, merhaba, hallo HT
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Re: Stockfish 1.7.1 update available
I would have to study the code for a while, because a lot has changed.beachknight wrote:I have tried both 1.7 and 1.7.1 in few closed midgame positions.Dann Corbit wrote:The new stockfish is really excellent against closed and semi-closed positions. It's very nice to have another option to analyze these positions.
Almost all the time, evaluation value was bigger than what Rybka
or Naum or Shredder or other engine reports. And it changes very
rapidly. Suggested moves were also different.
No DC x64 version this time?
Best,
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Re: Stockfish 1.7.1 update available
Well then you know what to do..this can be a new number one engine 

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Re: Stockfish 1.7.1 update available
Yes, we did a major rewrite for search.Dann Corbit wrote: I would have to study the code for a while, because a lot has changed.
We will be waiting for your improvements

Joona Kiiski
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Re: Stockfish 1.7.1 update available
Actually the eval is the same. The new thing (new for Stockfish) is to evaluate the position at every node and not only at the leaves as has been done until now.Ralph Stoesser wrote:From 1.6 to 1.7 we have seen a new search approach.
I wonder what comes next. A totally new eval?
This is great piece oft software. It plays already very strong. On the other hand there seem to be much potiential for further improvements. From reading the sources and the comments within the sources, I get the impression of a rough diamant here and there. Also it's eval output is a little tipsy some times. All in all to me it's still mysterious why it plays so strong???
This is new for Stockfish but it is a very known and old idea, for instance Glaurung 1 had the same concept and a lot of engines evaluate at each node. Normally this is slower, but in the new SF 1.7 it gives only a very little impact on ELO and allows to open the door for an whole new set of pruning techniques that rely on this...so at the end it ended up to be faster.
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Re: Stockfish 1.7.1 update available
Here something for the next release!
http://sites.google.com/site/dshawul/home
Scorpio 2.5 Cluster beta!!
Time to make Stockfish 1.8 Cluster
Can be usefull information.
http://sites.google.com/site/dshawul/home
Scorpio 2.5 Cluster beta!!
Time to make Stockfish 1.8 Cluster

Can be usefull information.
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Re: Stockfish 1.7.1 update available
10 seconds per move. 1 CPU. O/P from STS Stat 2.5
http://sites.google.com/site/strategict ... st-results
Stockfish 1.7.1 replaced Critter as new #1 with 796/1000.
Code: Select all
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
| STS1 | STS2 | STS3 | STS4 | STS5 | STS6 | STS7 | STS8 | STS9 | STS10 |
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
Stockfish-171-32-ja | 82 | 80 | 80 | 88 | 79 | 81 | 77 | 66 | 73 | 90 |
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Grade | A+ | A+ | A+ | S | A | A+ | A | B+ | A- | S |
Score / 1000 | 875 | 826 | 885 | 927 | 843 | 913 | 840 | 766 | 823 | 919 |
Grade | S | A+ | S | S | A+ | S | A+ | A | A+ | S |
Best Move : 796 / 1000 79.6 % Grade : A
Total : 8617 / 10000 86.17 % Grade : S
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
Stockfish 1.7.1 replaced Critter as new #1 with 796/1000.
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Re: Stockfish 1.7.1 update available
Just completed the first 1.7.1 version that will -probably, unless there are objections from Dann- have smooth nullmove as well as the "hijacked" Stockfish search. But if to be released then only after Rybka 4 I thinkDann Corbit wrote:I would have to study the code for a while, because a lot has changed.beachknight wrote:I have tried both 1.7 and 1.7.1 in few closed midgame positions.Dann Corbit wrote:The new stockfish is really excellent against closed and semi-closed positions. It's very nice to have another option to analyze these positions.
Almost all the time, evaluation value was bigger than what Rybka
or Naum or Shredder or other engine reports. And it changes very
rapidly. Suggested moves were also different.
No DC x64 version this time?
Best,


The smooth reduction is not working yet in Rainbow Serpent, but the UCI options for it are already integrated in the Stockfish search and the engine is running, mostly with the Stockfish search still intact


Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan