From: Sunil Pandey <skpgkp2@gmail.com>
To: Joseph Myers <joseph@codesourcery.com>
Cc: GNU C Library <libc-alpha@sourceware.org>, andrey.kolesov@intel.com
Subject: Re: [PATCH v2 4/6] x86-64: Add vector log/logf to libmvec microbenchmark
Date: Fri, 12 Nov 2021 17:37:52 -0800 [thread overview]
Message-ID: <CAMAf5_dROBXsOzWuE6Gpf-FRhAEOtm6XQimy6-kD5XBTRjOKYw@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.22.394.2111122316510.244254@digraph.polyomino.org.uk>
On Fri, Nov 12, 2021 at 3:18 PM Joseph Myers <joseph@codesourcery.com>
wrote:
> On Fri, 12 Nov 2021, Sunil K Pandey via Libc-alpha wrote:
>
> > +# Random inputs in [a=1.10,b=100.00]
>
> It seems odd not to have any inputs in (0, 1.10), or larger than 100 (in
> the absence of actual evidence that such numbers are rare as arguments to
> log in practice). All positive numbers are reasonable arguments to log.
>
>
On some cpu there may be a slow path around 0 and 1, hence range selected
from
1.10 to avoid slow path which may distort microbenchmark number on some
cpu.
There is no such issue for numbers larger than 100, we have to pick some
number
and choose 100 for microbenchmark.
> --
> Joseph S. Myers
> joseph@codesourcery.com
>
next prev parent reply other threads:[~2021-11-13 1:38 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 3:07 [PATCH 0/6] Implement microbenchmark for libmvec Sunil K Pandey
2021-11-10 3:07 ` [PATCH 1/6] x86-64: Create microbenchmark infrastructure " Sunil K Pandey
2021-11-10 3:53 ` Noah Goldstein
2021-11-11 18:34 ` Sunil Pandey
2021-11-12 19:17 ` [PATCH v2 0/6] Implement microbenchmark " Sunil K Pandey
2021-11-12 19:17 ` [PATCH v2 1/6] x86-64: Create microbenchmark infrastructure " Sunil K Pandey
2021-11-12 21:02 ` Noah Goldstein
2021-11-12 22:49 ` Sunil Pandey
2021-11-13 19:47 ` H.J. Lu
2021-11-14 2:59 ` Sunil Pandey
2021-11-15 21:06 ` [PATCH v3 0/6] Implement microbenchmark " Sunil K Pandey
2021-11-15 21:06 ` [PATCH v3 1/6] x86-64: Create microbenchmark infrastructure " Sunil K Pandey
2021-11-16 17:21 ` H.J. Lu
2021-11-16 18:37 ` [PATCH] " Sunil K Pandey
2021-11-16 18:40 ` H.J. Lu
2021-11-15 21:06 ` [PATCH v3 2/6] x86-64: Add vector cos/cosf to libmvec microbenchmark Sunil K Pandey
2021-11-15 21:06 ` [PATCH v3 3/6] x86-64: Add vector exp/expf " Sunil K Pandey
2021-11-15 21:06 ` [PATCH v3 4/6] x86-64: Add vector log/logf " Sunil K Pandey
2021-11-15 21:06 ` [PATCH v3 5/6] x86-64: Add vector pow/powf " Sunil K Pandey
2021-11-15 21:06 ` [PATCH v3 6/6] x86-64: Add vector sin/sinf " Sunil K Pandey
2021-11-12 19:17 ` [PATCH v2 2/6] x86-64: Add vector cos/cosf " Sunil K Pandey
2021-11-12 19:17 ` [PATCH v2 3/6] x86-64: Add vector exp/expf " Sunil K Pandey
2021-11-12 19:17 ` [PATCH v2 4/6] x86-64: Add vector log/logf " Sunil K Pandey
2021-11-12 23:18 ` Joseph Myers
2021-11-13 1:37 ` Sunil Pandey [this message]
2021-11-13 1:44 ` Joseph Myers
2021-11-13 6:14 ` Sunil Pandey
2021-11-16 0:12 ` Joseph Myers
2021-11-23 17:40 ` [PATCH v4 0/5] Add vector math functions to microbenchmark Sunil K Pandey
2021-11-23 17:40 ` [PATCH v4 1/5] x86-64: Add vector cos/cosf to libmvec microbenchmark Sunil K Pandey
2021-11-24 12:22 ` H.J. Lu
2021-11-23 17:40 ` [PATCH v4 2/5] x86-64: Add vector exp/expf " Sunil K Pandey
2021-11-24 12:24 ` H.J. Lu
2021-11-23 17:40 ` [PATCH v4 3/5] x86-64: Add vector log/logf " Sunil K Pandey
2021-11-24 12:25 ` H.J. Lu
2021-11-23 17:40 ` [PATCH v4 4/5] x86-64: Add vector pow/powf " Sunil K Pandey
2021-11-24 12:26 ` H.J. Lu
2021-11-23 17:40 ` [PATCH v4 5/5] x86-64: Add vector sin/sinf " Sunil K Pandey
2021-11-24 12:30 ` H.J. Lu
2021-11-23 18:30 ` [PATCH v2 4/6] x86-64: Add vector log/logf " Sunil Pandey
2021-11-23 22:13 ` Joseph Myers
2021-11-12 19:17 ` [PATCH v2 5/6] x86-64: Add vector pow/powf " Sunil K Pandey
2021-11-12 19:18 ` [PATCH v2 6/6] x86-64: Add vector sin/sinf " Sunil K Pandey
2021-11-10 3:07 ` [PATCH 2/6] x86-64: Add cos/cosf " Sunil K Pandey
2021-11-10 3:07 ` [PATCH 3/6] x86-64: Add exp/expf " Sunil K Pandey
2021-11-10 3:07 ` [PATCH 4/6] x86-64: Add log/logf " Sunil K Pandey
2021-11-10 3:07 ` [PATCH 5/6] x86-64: Add pow/powf " Sunil K Pandey
2021-11-10 20:27 ` Joseph Myers
2021-11-11 3:31 ` Sunil Pandey
2021-11-11 10:39 ` Szabolcs Nagy
2021-11-11 17:40 ` Sunil Pandey
2021-11-11 18:51 ` Sunil Pandey
2021-11-10 3:07 ` [PATCH 6/6] x86-64: Add sin/sinf " Sunil K Pandey
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