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Re: [PATCH] Don't use SSE4_2 instructions on Intel Silvermont Micro Architecture.
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: OndÅej BÃlka <neleai at seznam dot cz>
- Cc: Dmitrieva Liubov <liubov dot dmitrieva at gmail dot com>, "H.J. Lu" <hjl dot tools at gmail dot com>, GNU C Library <libc-alpha at sourceware dot org>
- Date: Thu, 20 Jun 2013 10:54:34 -0400
- Subject: Re: [PATCH] Don't use SSE4_2 instructions on Intel Silvermont Micro Architecture.
- References: <CAHjhQ93=uegeZg9iTqoJ+PFuUrvn8e2mA8tZ96Jy4CaV6aPbWg at mail dot gmail dot com> <20130617163729 dot GA15981 at domone dot kolej dot mff dot cuni dot cz> <CAHjhQ93zmP525hqW-2RnHBREc_949XLnm7sE-CSv3Nj8PQgUig at mail dot gmail dot com> <CAMe9rOqT31AFq1S3V0Krh2CZnHu=FiyXqhg840fimRtfU4_hXQ at mail dot gmail dot com> <20130618064910 dot GA19972 at domone dot kolej dot mff dot cuni dot cz> <CAHjhQ90Fc0kdZfQrUwLwpKbz2va4X9rzf1EkGD-s-RH-iF7guQ at mail dot gmail dot com> <CAHjhQ92qfjdKZthqAwxCVuCnLqDr2stdEbQpne5rKhzJPeN_cQ at mail dot gmail dot com> <51C23583 dot 1070307 at redhat dot com> <CAHjhQ93vWnCiVVU9MPoGptjQtn2J2PCDT2B7ZfXiKt+Cv_Rh_w at mail dot gmail dot com> <51C307A5 dot 7030608 at redhat dot com> <20130620151711 dot GA4891 at domone dot kolej dot mff dot cuni dot cz>
On 06/20/2013 11:17 AM, OndÅej BÃlka wrote:
> On Thu, Jun 20, 2013 at 09:46:13AM -0400, Carlos O'Donell wrote:
>> On 06/20/2013 09:10 AM, Dmitrieva Liubov wrote:
>>> What benchmarks do you mean? string/test-str** unit tests?
>>
>> I mean the new glibc microbenchmark suite :-)
>>
> What you have is currently nowhere near of state where you can get
> usable results by it. It has five major flaws that i wrote earlier and
> any of them is enough to have paper immidiately rejected.
Please help us make the microbenchmark better.
Until then it's what I'm going to use to determine if Dmitrieva's
patch makes performance objectively faster.
Cheers,
Carlos.