From: Paul Mackerras <paulus@samba.org>
To: linux@horizon.com
Cc: davem@davemloft.net, git@vger.kernel.org
Subject: Re: Revised PPC assembly implementation
Date: Wed, 27 Apr 2005 13:39:02 +1000 [thread overview]
Message-ID: <17007.2390.258823.189255@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20050427014712.13552.qmail@science.horizon.com>
linux@horizon.com writes:
> Here's a massively revised version, scheduled very close to optimally for
> the G4. (The main remaining limitation is the loading of the k value
> in %r5, which could be split up more.)
>
> My hope is that the G5 will do decently on it as well.
Nice... your new version takes 4.413 seconds on my G5 for 1000MB,
compared to 4.606 for your old version, i.e. it's about 4.4% faster.
Unfortunately it gives the wrong answer, though.
On my powerbook, which has a 1.5GHz G4 (7447A), the same test takes
4.68 seconds with my version, 4.72 seconds with your old version, but
only 3.90 seconds with your new version.
Care to check the code and find out why it's giving the wrong answer?
Regards,
Paul.
next prev parent reply other threads:[~2005-04-27 3:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-23 12:42 [PATCH] PPC assembly implementation of SHA1 linux
2005-04-23 13:03 ` linux
2005-04-24 2:49 ` Benjamin Herrenschmidt
2005-04-24 4:40 ` Paul Mackerras
2005-04-24 12:04 ` Wayne Scott
2005-04-25 0:16 ` linux
2005-04-25 3:13 ` Revised PPC assembly implementation linux
2005-04-25 9:40 ` Paul Mackerras
2005-04-25 17:34 ` linux
2005-04-25 23:00 ` Paul Mackerras
2005-04-25 23:17 ` David S. Miller
2005-04-26 1:22 ` Paul Mackerras
2005-04-27 1:47 ` linux
2005-04-27 3:39 ` Paul Mackerras [this message]
2005-04-27 16:01 ` linux
2005-04-26 2:14 ` linux
2005-04-26 2:35 ` linux
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=17007.2390.258823.189255@cargo.ozlabs.ibm.com \
--to=paulus@samba.org \
--cc=davem@davemloft.net \
--cc=git@vger.kernel.org \
--cc=linux@horizon.com \
/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 NNTP newsgroup(s).