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Re: Benchmarks gcc 3.0.4 (soon 3.1) vs. Intel C++ 6.0
On Thursday 09 May 2002 06:03, Jan Hubicka wrote:
> > Hello, all,
> > I've posted a set of benchmarks comparing the performance of code
> > generated by gcc 3.0.4 against that generated by Intel C++ 6.0 for Linux:
> > http://www.coyotegulch.com/reviews/intel_comp/intel_gcc_bench2.html
> Interesting comparison..
> Would you please try how does
> -funroll-loops/-funroll-all-loops/-fomit-frame-pointer/-ffast-math change
> the picture? Also you may grab the 3.1.0 prerelease available already and
> use it for benchmarking.
If you have any float code, you should try the sse options in gcc-3.1.
They often out-perform the Intel compiler, in those cases where the Intel
compiler doesn't vectorize.