Author: Andreas Guettinger
Date: 15:11:39 08/26/05
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On August 26, 2005 at 15:32:08, Robert Hyatt wrote: >On August 26, 2005 at 15:26:27, Andreas Guettinger wrote: > >>On August 26, 2005 at 15:09:29, Robert Hyatt wrote: >> >>>I just released version 20.0. The only new feature beyond 19.20, is that the >>>book files (*.bin) are now portable. That is, you can build a book on a >>>big-endian architecture, and use it on a little-endian architecture. You can >>>build a book on a 32 bit architecture, and use it on a 64 bit architecture. >>>Etc. This was a sore point with me for quite a while... some systems/compilers >>>make structures multiples of 8 bytes, some multiples of 4, some are big-endian, >>>some are little-endian. In the 2004 WCCC blitz tournament, I gave peter a book >>>that was made on my 32 bit systems, which produced some bizarre stuff on the 64 >>>bit opteron. I decided to fix that. >>> >>>20.1 will be out as soon as I get all the bit renumbering done. Nothing new >>>other than a very slight expected speedup due to the removal of the 63 - bit# >>>translation required between the Intel BSF/BSR and the Cray LEADZ bit numbering >>>schemes... >>> >>>20.2 and beyond are a planned complete revision of the Evaluation, but these >>>changes will not be released publicly until after the next WCCC event... >> >>Does this mean we should download a new book.bin file too? >> >>regards >>Andy > > >No. The "standard format" is the x86 book.bin, which is what everyone has >always downloaded from my web site. If you are running on anything other than a >32 bit X86 architecture, you had to build a book.bin for that architecture. You >now need to either download the "standard format" or else build a new one, which >will be in standard format automatically. Strange. If I remember correctly I downloaded the book.bin file from your ftp some time ago and used it all the time with crafty19.19 on my amd64 system. Are you sure its not the x86_64 version? The reason I used your book.bin file is that on my gentoo x86_64 system crafty19.19 crashes at the very end of bookbuilding when using enormous.pgn, although it has no problems with gm2600.pgn. I will try version 20.0 as soon as I have time. regards Andy
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