linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Ralf Baechle <ralf@conectiva.com.br>
To: "Holzrichter, Bruce" <bruce.holzrichter@monster.com>
Cc: "'Rik van Riel'" <riel@conectiva.com.br>,
	Rob Landley <landley@webofficenow.com>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Matt Nelson <mnelson@dynatec.com>,
	linux-kernel@vger.kernel.org
Subject: Re: Any limitations on bigmem usage?
Date: Wed, 13 Jun 2001 12:39:01 +0200	[thread overview]
Message-ID: <20010613123901.A31221@bacchus.dhis.org> (raw)
In-Reply-To: <3AB544CBBBE7BF428DA7DBEA1B85C79C9B6AE1@nocmail.ma.tmpw.net>
In-Reply-To: <3AB544CBBBE7BF428DA7DBEA1B85C79C9B6AE1@nocmail.ma.tmpw.net>; from bruce.holzrichter@monster.com on Tue, Jun 12, 2001 at 02:34:40PM -0400

On Tue, Jun 12, 2001 at 02:34:40PM -0400, Holzrichter, Bruce wrote:

> > Brilliant.  You need what, a 6x larger cache just to break even with
> > the amount of time you're running in-cache? 
> 
> This may be the wrong platform for this question, but after reading Rob
> Landley's note on performance on Itanium and architecture concerns, I am
> interested in Kernel hackers who have had to write code for Itanium's
> comments on the same, if you are not bound by NDA's.  Correct me if I am
> wrong, but I thought I saw the announcement that Itanium is shipping.  Have
> you tested Itanium performance?  We have an preproduction unit with quad
> Itanium's.  I have not had time to benchmark against other units, I am
> interested in performance items.  Feel free to drop me a line off list if
> you can.

A number of Specbench numbers of Itanium systems is now available.  Itanium
performs relativly bad for the integer numbers compared to the entire
competition but is a true fp killer.  As a developer I hate that compiling
code for Itanium due to the extra complexity of optimization and code
generation is way slower than for others CPUs.  So all in all Itanium is
a two edged sword.

  Ralf

  reply	other threads:[~2001-06-13 11:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-12 18:34 Any limitations on bigmem usage? Holzrichter, Bruce
2001-06-13 10:39 ` Ralf Baechle [this message]
  -- strict thread matches above, loose matches on Subject: below --
2001-06-12  0:18 Matt Nelson
2001-06-12  0:31 ` Doug McNaught
2001-06-12  0:38   ` Doug McNaught
2001-06-12 14:03 ` Matt Nelson
2001-06-12 16:29 ` Alan Cox
2001-06-12 12:46   ` Rob Landley
2001-06-12 18:16     ` Rik van Riel

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=20010613123901.A31221@bacchus.dhis.org \
    --to=ralf@conectiva.com.br \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=bruce.holzrichter@monster.com \
    --cc=landley@webofficenow.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mnelson@dynatec.com \
    --cc=riel@conectiva.com.br \
    /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).