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Re: Acovea 4, with Pentium 4 and Opteron results
- From: Andi Kleen <ak at muc dot de>
- To: Scott Robert Ladd <coyote at coyotegulch dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 01 Apr 2004 18:45:15 +0200
- Subject: Re: Acovea 4, with Pentium 4 and Opteron results
- References: <406C30B8.10008@coyotegulch.com>
Scott Robert Ladd <coyote@coyotegulch.com> writes:
>
> For the Opteron, Acovea produced clear results, improving the overall
> execution time of the benchmark suite by around 10% over the same code
> compiled with -O3 -ffast-math.
for amd64:
alma
Strong optimisms: -fschedule-insns -mieee-fp -funsafe-math-optimizations
Strong pessimisms: -ffloat-store -mfpmath=sse
this sounds broken: -mfpmath=sse is the default, so why would the
flag make it worse?
-Andi