Revisiting Strelka/Rybka

[jury_osipov]

And also:

My full name if Yury Ivanovich Osipov.
President of Science Academy is Yury Sergeevich Osipov.

[Chris Whittington]

And also:

My full name if Yury Ivanovich Osipov.
President of Science Academy is Yury Sergeevich Osipov.

Jury, are you descended from these great Russians?

http://film.comparethemeerkat.com/courageousness/

http://film.comparethemeerkat.com/fearlessness/

http://film.comparethemeerkat.com/ambitiousness/

[BB+]

Sergey Markov - russian chess programmer, author of Smarthink.
Sergey Markov - russian political scientist and journalist.

There's also http://en.wikipedia.org/wiki/Sergey_Markov

Russian army general and one of the founders of the Volunteer Army counterrevolutionary force of the White movement in the southern Russia during Russian Civil War.

[jury_osipov]

For point (a), I don't think 2x is a ridiculous expectation, especially if you compare to 64-bit. I suspect what Osipov says is simply an over-statement (perhaps just rounding up, when it is really something like ~70% faster).

It depends on computer. For example, my latest version of Strelka (based on the code of Rybka 3) show the following speed:

Core Duo E6750: 75% faster than Rybka 3
Core I7 920: only ~50% faster than Rybka 3

(both 32-bit and 1-cpu versions).

[Sentinel]

It depends on computer. For example, my latest version of Strelka (based on the code of Rybka 3) show the following speed:

Core Duo E6750: 75% faster than Rybka 3
Core I7 920: only ~50% faster than Rybka 3

(both 32-bit and 1-cpu versions).

Is it possible that popcnt implementation in Rybka 3 is such a crap???

[jury_osipov]

It depends on computer. For example, my latest version of Strelka (based on the code of Rybka 3) show the following speed:

Core Duo E6750: 75% faster than Rybka 3
Core I7 920: only ~50% faster than Rybka 3

(both 32-bit and 1-cpu versions).

Is it possible that popcnt implementation in Rybka 3 is such a crap???

No, it is without popcnt implementation.

[kingliveson]

For point (a), I don't think 2x is a ridiculous expectation, especially if you compare to 64-bit. I suspect what Osipov says is simply an over-statement (perhaps just rounding up, when it is really something like ~70% faster).

It depends on computer. For example, my latest version of Strelka (based on the code of Rybka 3) show the following speed:

Core Duo E6750: 75% faster than Rybka 3
Core I7 920: only ~50% faster than Rybka 3

(both 32-bit and 1-cpu versions).

Where can I get the source code?

[jury_osipov]

Where can I get the source code?

This is private version. I'm not going to release it.
It is called the Strelka 3P, mostly based on code of Rybka 3, but with significant improvements, and exists only in the 1CPU 32 bit version.
I can only report on recent test results:

Code: Select all

Blitz 5"+1"

Strelka 3P - Rybka 3 1-cpu w32:          +190 =238  -72
Strelka 3P - Rybka 4 (32 bit 1cpu):      +107 =246 -147
Strelka 3P - Stockfish-191-32-ja:        +174 =200 -126
Strelka 3P - Ivanhoe 999947c 32x:        +108 =248 -144
Strelka 3P - Fire 1.31 w32 KLO:          +124 =246 -112
Strelka 3P - Houdini-w32-1cpu (1.03a):    +71 =234 -195
Strelka 3P - Houdini 1.5a (32 bit 1cpu):  +68 =185 -247

[kingliveson]

Where can I get the source code?

This is private version. I'm not going to release it.
It is called the Strelka 3P, mostly based on code of Rybka 3, but with significant improvements, and exists only in the 1CPU 32 bit version.
I can only report on recent test results:

Code: Select all

Blitz 5"+1"

Strelka 3P - Rybka 3 1-cpu w32:          +190 =238  -72
Strelka 3P - Rybka 4 (32 bit 1cpu):      +107 =246 -147
Strelka 3P - Stockfish-191-32-ja:        +174 =200 -126
Strelka 3P - Ivanhoe 999947c 32x:        +108 =248 -144
Strelka 3P - Fire 1.31 w32 KLO:          +124 =246 -112
Strelka 3P - Houdini-w32-1cpu (1.03a):    +71 =234 -195
Strelka 3P - Houdini 1.5a (32 bit 1cpu):  +68 =185 -247

I promise not to share.

Edit: You can ask Norm. He sent me FireBird/Fire source code for months which I had and not a single soul saw it until he himself decided to publish it.