From: "Cui, Lili via Libc-alpha" <libc-alpha@sourceware.org>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: Florian Weimer <fweimer@redhat.com>,
Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>,
"H.J. Lu via Libc-alpha" <libc-alpha@sourceware.org>
Subject: RE: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support
Date: Mon, 1 Jun 2020 01:28:14 +0000 [thread overview]
Message-ID: <BYAPR11MB264851F0DBC8039FBC798D7A9E8A0@BYAPR11MB2648.namprd11.prod.outlook.com> (raw)
In-Reply-To: <CAMe9rOr6psuzwx-uNvzUwvf2C2qi1WkfRru+wL18way598psRA@mail.gmail.com>
From: H.J. Lu <hjl.tools@gmail.com>
Sent: Friday, May 29, 2020 7:30 PM
To: Cui, Lili <lili.cui@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>; H.J. Lu via Libc-alpha <libc-alpha@sourceware.org>; Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support
On Fri, May 29, 2020 at 1:48 AM Cui, Lili <lili.cui@intel.com<mailto:lili.cui@intel.com>> wrote:
> -----Original Message-----
> From: H.J. Lu <hjl.tools@gmail.com<mailto:hjl.tools@gmail.com>>
> Sent: Thursday, May 28, 2020 8:32 PM
> To: Florian Weimer <fweimer@redhat.com<mailto:fweimer@redhat.com>>; Cui, Lili <lili.cui@intel.com<mailto:lili.cui@intel.com>>
> Cc: H.J. Lu via Libc-alpha <libc-alpha@sourceware.org<mailto:libc-alpha@sourceware.org>>; Shen-Ta Hsieh
> <ibmibmibm.tw@gmail.com<mailto:ibmibmibm.tw@gmail.com>>
> Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support
>
> On Thu, May 28, 2020 at 5:22 AM Florian Weimer <fweimer@redhat.com<mailto:fweimer@redhat.com>>
> wrote:
> >
> > * H. J. Lu via Libc-alpha:
> >
> > >> Here is a benchmark result on my AMD Ryzen 9 3900X system:
> > >
> > > Since we don't know or may not care SSE4 machines without AVX,
> > > should we make it to AVX only?
> >
> > What about Goldmont/Tremont? Those are current CPUs which do not
> > support AVX, but I think they have sufficient SSE4 support levels for
> > this change.
> >
>
> Good point. Lili, please collect glibc micro benchmark roundeven/roundevenf
> data before and after:
>
> https://sourceware.org/pipermail/libc-alpha/2020-May/113533.html
>
> on Tremont.
>
> --
> H.J.
Hi H.J,
Result is here.
benchmark result before this commit on Tremont
benchmark result after this commit on Tremont
Hi Lili,
The results are empty.
--
H.J.
Hi H.J,
Sorry for that my format has some problems, data is here.
benchmark result before this commit on Tremont
"roundeven": "roundevenf":
"duration": 2.19422e+09, "duration": 2.19402e+09,
"iterations": 1.44514e+08, "iterations": 1.4184e+08,
"max": 43.258, "max": 53.07,
"min": 11.052, "min": 12.052,
"mean": 15.1835 "mean": 15.4683
benchmark result after this commit on Tremont
"roundeven": "roundevenf":
"duration": 2.19144e+09, "duration": 2.19218e+09,
"iterations": 2.17075e+08, "iterations": 1.97982e+08,
"max": 395.428, "max": 34.928,
"min": 10.044, "min": 11.02,
"mean": 10.0953 "mean": 11.0726
Thanks,
Lili.
next prev parent reply other threads:[~2020-06-01 1:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-05 17:23 [PATCH] Add benchtests for roundeven and roundevenf Shen-Ta Hsieh
2020-03-27 23:25 ` Joseph Myers
2020-05-02 15:02 ` [PATCH v4 1/2] math: redirect roundeven function Shen-Ta Hsieh via Libc-alpha
2020-05-02 15:02 ` [PATCH v4 2/2] x86_64: roundeven with sse4.1 support Shen-Ta Hsieh via Libc-alpha
2020-05-28 12:05 ` H.J. Lu via Libc-alpha
2020-05-28 12:22 ` Florian Weimer via Libc-alpha
2020-05-28 12:31 ` H.J. Lu via Libc-alpha
2020-05-29 8:48 ` Cui, Lili via Libc-alpha
2020-05-29 11:29 ` H.J. Lu via Libc-alpha
2020-06-01 1:28 ` Cui, Lili via Libc-alpha [this message]
2020-06-01 2:04 ` H.J. Lu via Libc-alpha
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