Author: Robert Hyatt
Date: 11:42:44 02/15/04
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On February 15, 2004 at 10:31:31, Michel Langeveld wrote: >Hello All, > >Just wanted to share some compiler-experience: > >The Intel Compiler 7.1 produces 6% faster executable then MSVC .NET 2002 >I was happy with this cheapo gain and could not wait to try Intel Compiler 8.0. > >Intel 7.1 compiled for pentium1: time=122.89 >Intel 7.1 compiled for pentiumpro with ext: time=123.77 >Intel 7.1 compiled for pentium4: time=124.50 >Intel 7.1 compiled for pentiumpro: time=126.47 > >Intel 8.0 compiled for pentium3 with generic extensions: time=127.61 >Intel 8.0 compiled for pentium3 with specialized p3 ext: time=127.94 >Intel 8.0 compiled for pentium3: time=128.72 >Intel 8.0 compiled for pentium1: time=128.95 >Intel 8.0 compiled for pentium4: time=130.00 > >So the Intel 8.0 output is slower You probably should "twiddle" more. I am using 8.0 and it is a bit faster than 7.0/7.1 for me. Compile options can be important, as is the PGO stuff... You can look at my Makefile from a recent version to see my ICC 8.0 options... > >MSVC .NET 2002 for pentium pro: 130.94 >MSVC .NET 2002 for pentium: 134.02 > >The MSVC .NET 2002 is even more slower. > >Is the Intel Compiler 8.0 then the previous version or also for other processors >like P4, ATHLON, Opteron, etc. What experience did you have with this? > >Here is my favourite compiler list (based on my P3): > >Intel 7.1 >Intel 8.0 >MSVC 6.0 SP5 and MSVC 2002 (they are pretty close) >GCC > >The size goes as follows (from biggest to smallest): > >Intel 8.0 >GCC >Intel 7.1 >MSVC 6.0 SP5 and MSVC 2002 (they are pretty close) > >Best regards, > >Michel
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