Return-path: Envelope-to: publicinbox@libre-riscv.org Delivery-date: Fri, 27 Mar 2020 10:36:24 +0000 Received: from localhost ([::1] helo=libre-riscv.org) by libre-riscv.org with esmtp (Exim 4.89) (envelope-from ) id 1jHmLf-0003kD-Tj; Fri, 27 Mar 2020 10:36:23 +0000 Received: from vps2.stafverhaegen.be ([85.10.201.15]) by libre-riscv.org with esmtp (Exim 4.89) (envelope-from ) id 1jHmLd-0003k7-DH for libre-riscv-dev@lists.libre-riscv.org; Fri, 27 Mar 2020 10:36:21 +0000 Received: from hpdc7800 (hpdc7800 [10.0.0.1]) by vps2.stafverhaegen.be (Postfix) with ESMTP id B0B6911C0458 for ; Fri, 27 Mar 2020 11:36:20 +0100 (CET) Message-ID: <9e44930a0332eff507661e617796b9d0674b0e05.camel@fibraservi.eu> From: Staf Verhaegen To: libre-riscv-dev@lists.libre-riscv.org Date: Fri, 27 Mar 2020 11:36:15 +0100 In-Reply-To: References: <29b1a9ecedda151dc9c8da6516c3691dfede62ef.camel@fibraservi.eu> <6fa40cb78b3f8c013ca4953ccb4daa5c23e3b501.camel@fibraservi.eu> <6fbfb2a3258be77f4fce69661b283dc31a683f7b.camel@fibraservi.eu> Organization: FibraServi bvba X-Mailer: Evolution 3.28.5 (3.28.5-5.el7) Mime-Version: 1.0 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 Subject: Re: [libre-riscv-dev] cache SRAM organisation X-BeenThere: libre-riscv-dev@lists.libre-riscv.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Libre-RISCV General Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Libre-RISCV General Development Content-Type: multipart/mixed; boundary="===============8086656049151897504==" Errors-To: libre-riscv-dev-bounces@lists.libre-riscv.org Sender: "libre-riscv-dev" --===============8086656049151897504== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-p7q7BDl/EdOk4+ultaEv" --=-p7q7BDl/EdOk4+ultaEv Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Luke Kenneth Casson Leighton schreef op vr 27-03-2020 om 09:44 [+0000]: > On Fri, Mar 27, 2020 at 9:25 AM Staf Verhaegen wrote= : > > My point is that you will have the same performance for the fixed 5-sta= ge pipeline running @ 800MHz >=20 > no, it won't: it'll be half the clock speed. it won't be double thenumbe= r of computations: it'll be the exact same number ofcomputations. therefor= e, half the speed means half the number ofcomputations because the *through= put* is the same > when you use "cpufreq-set" to change the clock rate, if the clock rateis = halved, the computer is twice as slow. You are right. > yes it's confusing :) Yes and no, it is the basic functionality of a pipeline :( You have the same latency but can have double the number of operations in f= light. greets, Staf. --=-p7q7BDl/EdOk4+ultaEv-- --===============8086656049151897504== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlicmUtcmlz Y3YtZGV2IG1haWxpbmcgbGlzdApsaWJyZS1yaXNjdi1kZXZAbGlzdHMubGlicmUtcmlzY3Yub3Jn Cmh0dHA6Ly9saXN0cy5saWJyZS1yaXNjdi5vcmcvbWFpbG1hbi9saXN0aW5mby9saWJyZS1yaXNj di1kZXYK --===============8086656049151897504==--