From: znmeb@...
Date: 2006-09-17T22:49:21+09:00
Subject: Re: Benchmark for Ruby

Quoting Sylvain Joyeux <sylvain.joyeux@polytechnique.org>:

> For those who are interested, I already measured the effect of GCC
> optimization flags on Ruby speed using the MatrixBenchmark, which was the
> only one I had at the time. Results here:
> http://www.jhaampe.org/software/ruby-gcc

Very interesting ... 22 percent speedup overall. I believe, though I'd need to
go back and check the scripts, that when I ran the original tests, I compiled
with O3 and "march" for my machine, which is my default setting for Gentoo
Linux. But I didn't know about the GCC feature of recompiling after profiling,
so I didn't try that. It's clearly worth doing, and when I get some free time
I'll put it in the benchmark.

While we're on the subject, I haven't forgotten the needs of our Windows
brethren. :) Does anyone here know if either the Visual Studio Express C++ or
MinGW compilers are capable of

a) Tuning code to the architecture a la GCC's "march", and/or
b) Inserting profiling counters and recompiling on the basis of the profiled
runs?
> --
> Sylvain Joyeux
>
>