nofib regressions in HEAD since 7.6.2 release
Nicolas Frisby
nicolas.frisby at gmail.com
Tue Feb 12 14:50:10 CET 2013
I'm using the bindists for some versions, and the ~simonmar/fp/ installs
(which I've assumed are bindist) for the ones that already existed there
(ie 7.0.1 to 7.4.1, excepting 7.0.4).
$ md5sum ghc*bz2
0fc26b4c1d10ff9dc8b0cbe9453d48d3 ghc-7.0.4-x86_64-unknown-linux.tar.bz2
de67ecfe619b0126d8a8b93d26f34555 ghc-7.4.2-x86_64-unknown-linux.tar.bz2
23da3285c5f8fe6716e2795d149c6b96 ghc-7.6.1-x86_64-unknown-linux.tar.bz2
230270a985c522af939d9c71aa76343f ghc-7.6.2-x86_64-unknown-linux.tar.bz2
On Tue, Feb 12, 2013 at 11:09 AM, Simon Marlow <marlowsd at gmail.com> wrote:
> On 12/02/13 03:17, Johan Tibell wrote:
>
>> Hi Nicolas!
>>
>> I tried to reproduce the difference between 7.0.4 and 7.6.2 on the
>> exp3_8, wheel-sieve1, and primes and couldn't get the same percent
>> difference as you. We need to reconcile these differences somehow. Lets
>> start with more exact machine specs. I have a:
>>
>> ------------------------------**------------------------------**
>> --------------------
>> Program Size Allocs Runtime Elapsed TotalMem
>> ------------------------------**------------------------------**
>> --------------------
>> bernouilli +3.3% +0.2% 0.12 0.13 +0.0%
>> exp3_8 +1.1% +53.7% 0.14 0.14 +300.0%
>> gen_regexps +18.7% +3.9% 0.00 0.00 +0.0%
>> integrate -0.1% +39.0% 0.21 0.23 +0.0%
>> kahan +1.7% +98.6% +9.9% +7.3% +0.0%
>> paraffins +1.3% -1.2% 0.06 0.08 +0.0%
>> primes +1.4% +64.7% 0.04 0.05 +50.0%
>> queens +0.8% -0.5% 0.02 0.02 +0.0%
>> rfib +1.7% +42.8% 0.02 0.02 +0.0%
>> tak +0.9% +12.0% 0.01 0.01 +0.0%
>> wheel-sieve1 +0.8% +66.6% -4.6% -5.8% -12.5%
>> wheel-sieve2 +0.9% +0.0% 0.12 0.13 +0.0%
>> x2n1 +10.3% +87.3% 0.00 0.01 +200.0%
>> ------------------------------**------------------------------**
>> --------------------
>> Min -0.1% -1.2% -4.6% -5.8% -12.5%
>> Max +18.7% +98.6% +9.9% +7.3% +300.0%
>> Geometric Mean +3.2% +31.7% +2.4% +0.5% +23.6%
>>
>
> Some of these benchmarks essentially do no allocation in their inner loops
> (x2nl, rfib, tak), so differences there just indicate changes in the IO
> library or elsewhere, and aren't significant.
>
> Is your 7.6.2 from our binary distributions, or did you build it yourself?
>
> Cheers,
> Simon
>
>
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