Stockfish 4

[styx]

I know it's a bit early for final conclusions, but so far stockfish is doing very well in the IPON tournament. even in this early stage, SF looks significantly stronger.

great work from the stockfish team!

I am really looking forward to the nTCEC season 2 with longer time controls

[mcostalba]

Eelco, Thanks for the short answer, so for Windows exe the compiler is not MSVC but is it gcc (over MinGW), the Intel compiler or still something else?

I would guess the compiler producing the fastest exe is (still) the Intel compiler, so it would be normal to use this one provided the team has access to it (it's not free on Windows).

No the fastest compile is gcc even under Windows (mingw). Under Linux the fastest is clang. Anyhow all the compiles at http://abrok.eu/stockfish/ have been done with gcc/mingw.

[mcostalba]

Larry has done some testing of Stockfish 4 and he is extremely impressed - especially with it's performance at long time controls but even at shorter time controls it's a massive improvement!! Very well done Marco and team!

Thanks !

The last months have been really something...new

[Don]

Eelco, Thanks for the short answer, so for Windows exe the compiler is not MSVC but is it gcc (over MinGW), the Intel compiler or still something else?

I would guess the compiler producing the fastest exe is (still) the Intel compiler, so it would be normal to use this one provided the team has access to it (it's not free on Windows).

No the fastest compile is gcc even under Windows (mingw). Under Linux the fastest is clang. Anyhow all the compiles at http://abrok.eu/stockfish/ have been done with gcc/mingw.

Clang is significantly slower for me - it's crazy how different programs respond. I have not tried this in a while though - so maybe I give it another chance.

Is the difference more than trivial between clang and gcc?

[mcostalba]

Clang is significantly slower for me - it's crazy how different programs respond. I have not tried this in a while though - so maybe I give it another chance.

Is the difference more than trivial between clang and gcc?

On my notebook is about 5%, I have an old Intel Core 2 Duo 32 bit under Ubuntu

[melajara]

Eelco, Thanks for the short answer, so for Windows exe the compiler is not MSVC but is it gcc (over MinGW), the Intel compiler or still something else?

I would guess the compiler producing the fastest exe is (still) the Intel compiler, so it would be normal to use this one provided the team has access to it (it's not free on Windows).

No the fastest compile is gcc even under Windows (mingw). Under Linux the fastest is clang. Anyhow all the compiles at http://abrok.eu/stockfish/ have been done with gcc/mingw.

Thank you for this clarification, one more example that open source software rocks

[Modern Times]

Thank you for this clarification, one more example that open source software rocks

Yes, it does rock !

[IGarcia]

Clang is significantly slower for me - it's crazy how different programs respond. I have not tried this in a while though - so maybe I give it another chance.

Is the difference more than trivial between clang and gcc?

On my notebook is about 5%, I have an old Intel Core 2 Duo 32 bit under Ubuntu

Thanks all Stockfish team for this great engine!

[lucasart]

Clang is significantly slower for me - it's crazy how different programs respond. I have not tried this in a while though - so maybe I give it another chance.

Is the difference more than trivial between clang and gcc?

On my notebook is about 5%, I have an old Intel Core 2 Duo 32 bit under Ubuntu

On my machine (i7), GCC produces a faster executable than Clang for the same Stockfish code. I think it not only depends on the code, but also on the CPU.

[zullil]

I've been compiling Stockfish for a long time on various Macs. I haven't used the Intel (icc) compiler, but I've used many versions of gcc and several versions of clang. The fastest binaries I get come from gcc-4.6. Those from clang tend to be much slower.