Author: Dann Corbit
Date: 00:13:28 01/11/01
Go up one level in this thread
On January 11, 2001 at 01:19:22, Eugene Nalimov wrote: >On January 10, 2001 at 16:25:59, Dann Corbit wrote: > >>On January 10, 2001 at 16:13:06, Robert Hyatt wrote: >> >>>On January 10, 2001 at 15:37:40, Dann Corbit wrote: >>> >>>>Here she be: >>>>ftp://cap.connx.com/pub/chess-engines/new-approach/CRAFTY1.EXE >>>> >>>>SMP Version here: >>>>ftp://cap.connx.com/pub/chess-engines/new-approach/CRAFTYSMP.EXE >>> >>>OK... I give up... what is "new approach"? >>> >>>:) >> >>Not much to it. >> >>I change a few compiler settings, and use the Intel C++ 5.0 compiler do most of >>the work. She's a real honey. >> >>I let the compiler agressively inline and target P6 and above chips. I also >>change the function calling convention and a few other odds and ends (you've >>seen my dirty #include trick, for example). >> >>As far as making a fast binary, the Intel C++ compiler is the best there is. >> >>If someone else wants to try it, you should buy both versions 4.5 and version 5, >>since there are some files that won't compile because it is an incredibly picky >>compiler. I use this procedure: >>Compile with Intel C++ 5.0 >>(for all modules left not compiled): >>Compile with Intel C++ 4.5 >>(for all modules left not compiled): >>Compile with Microsoft C++ 6.0 (with processor pack installed). >> >>Then, for obvious gaffes, I repair them one at a time and repeat the process. >>That way, I have something that runs right off the bat, and eventually, a real >>bolt of lightning. > >So, generally you are saying "Intel compiler does not work". The compiler is usually right when it complains about something (but refusing to create an object is a bit extreme). >AFAIK, main objective for Intel compiler is to produce good results on SPEC >benchmarks. What will happen with real-world code does not matter. The binaries it creates are usually quite a bit faster than Microsoft. And I can set the optimization to the most aggressive levels and it still runs. I am satisfied with the quality of the Intel compilers. However, their technical support is unfathomably lame, doubly so considering what you pay for it.
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