Stockfish v2.1 now available

[tmokonen]

What time control are you using?

[Gian-Carlo Pascutto]

I'm using GCC 4.6. The speed gain from LTO is bigger than the last few years of GCC development combined, so it's worth verifying whether Stockfish triggers any bugs there or not.

Is this somehow supposed to be better than "one big compile?" I've always had a bunch of modules, and then for max speed, I have a crafty.c file that just #includes every source file, in what I consider the most cache-friendly order...

No, except for 2 things:

a) if you have an up-to-date binutils, then using -lfto automatically implies the benefits of -fwhole-program because the linker can detect when that is useful. Of course you can use the latter flag in your Makefile, too.

b) LTO can actually parallelize the compile with -flto=x, whereas including everything in a single .c should prevent you from using >1 cpu.

[Dokterchen]

Will a new book also be available?

Torsten

[ernest]

is it just me or is anybody else seeing many losses on time with this release??

In Fritz 11 GUI, I got 2 losses on time (in a match of 300 games) with SF-2.1 64-bit
TC was 2'+1" (no ponder)