From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1EF24f-0006rJ-Ci for garchives@archives.gentoo.org; Tue, 13 Sep 2005 04:07:13 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j8D40nvF014711; Tue, 13 Sep 2005 04:00:49 GMT Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.193]) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j8D3unwh001681 for <gentoo-user@lists.gentoo.org>; Tue, 13 Sep 2005 03:56:51 GMT Received: by wproxy.gmail.com with SMTP id i5so2690565wra for <gentoo-user@lists.gentoo.org>; Mon, 12 Sep 2005 21:01:19 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=mPM+vgZmsuztfdcJ4pqtIIuD9cO6D0rXXlswnub6yOEAlUiaea6/Ct8Qp7B0MJKYdsfLbZ1+BMBzg/b8B90beZFSu/9Y7Hi6L6Fiu+S73oUsJ2f+Lts95MPw/qN9fn0h5CcN8RGZskx6xf9rNhSRMccHSE03VhXpSldJda6urL4= Received: by 10.54.6.52 with SMTP id 52mr198403wrf; Mon, 12 Sep 2005 21:01:19 -0700 (PDT) Received: by 10.54.109.6 with HTTP; Mon, 12 Sep 2005 21:01:18 -0700 (PDT) Message-ID: <d9a0a6da0509122101eebebf8@mail.gmail.com> Date: Mon, 12 Sep 2005 23:01:18 -0500 From: Denis <denis.che@gmail.com> To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] hardware advice for dual-processor set-up on gentoo In-Reply-To: <20050912200733.3da4cc99@chi.speakeasy.net> Precedence: bulk List-Post: <mailto:gentoo-user@lists.gentoo.org> List-Help: <mailto:gentoo-user+help@gentoo.org> List-Unsubscribe: <mailto:gentoo-user+unsubscribe@gentoo.org> List-Subscribe: <mailto:gentoo-user+subscribe@gentoo.org> List-Id: Gentoo Linux mail <gentoo-user.gentoo.org> X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline References: <d9a0a6da050912134040cde233@mail.gmail.com> <20050912200733.3da4cc99@chi.speakeasy.net> Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by robin.gentoo.org id j8D3unwh001681 X-Archives-Salt: 94e29c82-1d5f-4a0d-870e-32d9e5472134 X-Archives-Hash: 0c05456f554860992cb8a0141a9829b2 Bob, Thanks for that detailed write-up. I don't pretend to have any understanding of the architecture of the new dual-core Opterons, but I did want to clarify a couple things... I was under the impression that the Opterons didn't have the same type of a NorthBridge bottleneck that Intel processors experience and were thus quite a bit more efficient in the way they integrate with RAM and themselves!... In fact, from reading the numbers posted on the AMD website comparing FSB and memory bandwidth, the numbers for the Opteron were much superior to those for Intel. Reading what you wrote would make me think that the numbers AMD published were some kind of a marketing ploy?? The numbers I am referring to are in this PDF: http://multicore2.amd.com/Products/CompetitiveComparisons/2P_Server_Comparison.pdf Also, I read on more than one occasion that the DDR2-400 and DDR2-533 suffer from latency issues and perform more sluggishly than their DDR1 counterparts as of right now...... I mean, out of most benchmarks I've read, it looked like an Opteron comes out on top compared to the Irwindale Xeons (even with their 2MB L2 cache) including floating-point arithmetic, only with the exception of matrix multiplication... Also, it appears that the dual-core Opterons have true multithreading as opposed to Intel's seemingly superficial Hyperthreading? I've been using Intel-only products so far in my computer experiences, and this is the first time I am considering buying a non-Intel system, so I want to make sure I understand enough about both processors to make an educated decision. You mentioned compilers... Do you HAVE to use those instead of the standard GCC stuff? I've never used anything but GCC before for compiling things. Thanks! -- gentoo-user@gentoo.org mailing list