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Up Topic The Rybka Lounge / Computer Chess / Fritz 12 32-bit version optimally tuned
- - By Capa (***) Date 2010-02-17 14:28

According to Chessbase, the 32-bit version of Fritz 12 has been so optimally tuned that a 64-bit version "would not be any faster."  Is this really true?  I believe Rybka 64 is around 1.6 times faster than the 32-bit version.  How did the Fritz engineers accomplish this?  If this is true, I wonder if Rybka might follow in the same path?
Parent - By Fulcrum2000 (****) Date 2010-02-17 14:55
What they mean is their design does not allow for 64-bit speedup in other words their chessengine does not use bitboard representation internally. If they would switch to bitboard also Fritz would gain from going to 64-bits.
Parent - - By Vempele (Silver) Date 2010-02-17 16:04
It could mean that they are using a non-bitboard board representation that's faster than doing the same thing with 64-bit bitboards.
Parent - - By Fulcrum2000 (****) Date 2010-02-17 17:51
No way, just marketing talk...
Parent - - By Vempele (Silver) Date 2010-02-17 23:28
No, really, it's entirely possible; bitboards are not the holy grail of chess programming.
Parent - - By Capa (***) Date 2010-02-18 14:29
I wonder if Vas would be willing to speak on this matter---he probably would know for sure.
Parent - - By Uly (Gold) Date 2010-02-18 14:32
So, would your opinion change depending on who is topping the rating lists and what methods he used?
Parent - - By Capa (***) Date 2010-02-18 21:29
Vytron, estoy tratando de entender lo que quieres decir con "chess is like football but with dice."  Te refieres al futbol americano o al verdadero futbol y, por que dados?  Para mi, el ajedrez no tiene nada que ver con suerte, y es por eso, precisamente, porque lo juego y no poker.
Parent - By Uly (Gold) Date 2010-02-18 23:17
Es solo una broma que me pareciĆ³ graciosa y por eso la puse en mi firma :)

Bueno, creo que es tiempo de cambiarla.
Parent - - By M ANSARI (*****) Date 2010-02-18 14:47
This is true for non bitboard engines.  They don't get much of a performance boost by switching to 64bit.  On the other hand bitboard engines tend to fly on 64bit.
Parent - - By Capa (***) Date 2010-02-18 20:06
Ansari, if this is true, are non-bitboard engines naturally faster than bitboard ones that are 32bit?  Would anyone else know the answer to this?
Parent - By Vempele (Silver) Date 2010-02-18 20:59
The 32-bit mailbox version of a pre-alpha Glaurung 2 was significantly faster than the 32-bit bitboard version. But the 64-bit bitboard version was significantly faster than even that, so Tord went with bitboards.

For about 30% values of significant, IIRC.
- By hsnksc77 (**) Date 2010-02-17 14:34
I think they can not do 64-bit engines.
- By mikal (**) Date 2010-02-17 18:17
Sounds like another chessbase crap if you ask me. Since fritz 9 nothing interesting has come out in both engine and gui side. And the article tends to avoid factual elo gains and focuses on irrelevant features some already very obvious. It does not even state how strong it is compared to free programs like stockfish, so we would know if it is really worth buying. And who cares if it supports 16 cores that's like less than 1% of the chess population and some programs already did years ago. Maybe Deep Fritz 13 will support 2012 cores, wow such a massive innovation *sarcasm*.

And let's not also forget the usual advertisement (now boring) of chessbase engines: "Fritz continues to fascinate the chess world. It has beaten a reigning World Champion in the battle of man vs machine", IMO chess engines goal now is how to play errorless chess as much as possible, man-machine chess battle already ended years ago and many free programs can easily beat the best humans.
Up Topic The Rybka Lounge / Computer Chess / Fritz 12 32-bit version optimally tuned

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