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Posted by Tekime on 2006-02-20 06:00:19
We have been benchmarking performance of SPEC CPU2000 tasks on various platforms, using the so-called profile-guided optimizations during compilation of test tasks for quite a long time (probably since Intel C++/Fortran Compilers 7.0). We have been using it by default, that is we assume that it will inevitably lead to higher-performance machine code. Nevertheless, it will do no harm to make sure at least once that it's really true. Take also into account that Intel compilers are initially intended for maximum code performance only on processors from the cognominal manufacturer (it would have been strange otherwise), while we use these tasks for testing competing processors as well  . In this respect, our today's contenders will include two more or less top single core processors from the leading competing manufacturers =97 Intel Pentium 4 660 and AMD Athlon 64 4000+. And now I'll give a brief account of the optimization method, which is called Profile-guided optimization.
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