From: Jonathan Wakely via Libc-alpha <libc-alpha@sourceware.org>
To: Noah Goldstein <goldstein.w.n@gmail.com>
Cc: "Richard Earnshaw \(lists\)" <Richard.Earnshaw@arm.com>,
libstdc++ <libstdc++@gcc.gnu.org>,
gcc-patches List <gcc-patches@gcc.gnu.org>,
GNU C Library <libc-alpha@sourceware.org>,
Jason Merrill <jason@redhat.com>
Subject: Re: [PATCH] c++: implement C++17 hardware interference size
Date: Fri, 16 Jul 2021 12:17:23 +0100 [thread overview]
Message-ID: <CACb0b4=_0op+uaKcf-_=q_Mk12cy0MdeUAa=FNHBF3S6zW7Gdw@mail.gmail.com> (raw)
In-Reply-To: <CAFUsyf+eKUg=8rUEL2FfYnfzxCG=U7giPpZiDwBGRFpw+kwmzQ@mail.gmail.com>
On Fri, 16 Jul 2021 at 03:51, Noah Goldstein wrote:
> On intel x86 systems with a private L2 cache the spatial prefetcher
> can cause destructive interference along 128 byte aligned boundaries.
> https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf#page=60
Which is a good example of why these "constants" should never have
been standardized in the first place. Sigh.
next prev parent reply other threads:[~2021-07-16 11:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210716023656.670004-1-jason@redhat.com>
2021-07-16 2:41 ` [PATCH] c++: implement C++17 hardware interference size Jason Merrill via Libc-alpha
2021-07-16 2:48 ` Noah Goldstein via Libc-alpha
2021-07-16 11:17 ` Jonathan Wakely via Libc-alpha [this message]
2021-07-16 13:27 ` Richard Earnshaw via Libc-alpha
2021-07-16 13:26 ` Jonathan Wakely via Libc-alpha
2021-07-16 15:12 ` Matthias Kretz
2021-07-16 15:30 ` Jason Merrill via Libc-alpha
2021-07-16 16:54 ` Jonathan Wakely via Libc-alpha
2021-07-16 18:43 ` Jason Merrill via Libc-alpha
2021-07-16 19:26 ` Matthias Kretz
2021-07-16 19:58 ` Jonathan Wakely via Libc-alpha
2021-07-17 8:14 ` Matthias Kretz
2021-07-17 13:32 ` Jonathan Wakely via Libc-alpha
2021-07-17 13:54 ` Matthias Kretz
2021-07-17 21:37 ` Jason Merrill via Libc-alpha
2021-07-19 9:41 ` Richard Earnshaw via Libc-alpha
2021-07-20 16:43 ` Jason Merrill via Libc-alpha
2021-07-20 18:05 ` Thomas Rodgers
2021-07-16 17:20 ` Noah Goldstein via Libc-alpha
2021-07-16 19:37 ` Matthias Kretz
2021-07-16 21:23 ` Noah Goldstein via Libc-alpha
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/libc/involved.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CACb0b4=_0op+uaKcf-_=q_Mk12cy0MdeUAa=FNHBF3S6zW7Gdw@mail.gmail.com' \
--to=libc-alpha@sourceware.org \
--cc=Richard.Earnshaw@arm.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=goldstein.w.n@gmail.com \
--cc=jason@redhat.com \
--cc=jwakely@redhat.com \
--cc=libstdc++@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).