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Article #10901Re: DEC Alpha AXP System INTEGER Performance
From: Othman Ahmad
Date: Mon, 16 Nov 1992 05:58
Date: Mon, 16 Nov 1992 05:58
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Greg Pavlov (pavlov@niktow.canisius.edu) wrote: : The SPECint92 values seem somewhat low, in terms of processor MHz. Any : known reasons why ? Essentially, our R3000-based systems, at 40 MHz, : have a SPECint92 (measured by DEC) that is apx. 40% of an ALPHA-based : system at 133 MHz. The bus clock for alpha is much lower. If I remember correctly it is only half that or even worse(33Mhz?). With 64 bits, the amount of data and instruction that can be cached is much smaller so the internal cache is not as effective as many people thought, especially in this newsgroup. This is only a very wild guess. How about dhryston performance? It may tell us more about the cache performance. -- Othman bin Ahmad, School of EEE, Nanyang Technological University, Singapore 2263. Internet Email: eoahmad@ntuix.ntu.ac.sg Bitnet Email: eoahmad@ntuvax.bitnet
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Newsgroups: comp.arch Path: arc1-ca.pugleaf.net!sparky!uunet!europa.asd.contel.com!darwin.sura.net!jvnc.net!nuscc!ntuix!eoahmad From: eoahmad@ntuix.ntu.ac.sg (Othman Ahmad) Subject: Re: DEC Alpha AXP System INTEGER Performance Message-ID: <1992Nov16.055833.14566@ntuix.ntu.ac.sg> Organization: Nanyang Technological University - Singapore X-Newsreader: TIN [version 1.1 PL6] References: <1698@niktow.canisius.edu> Date: Mon, 16 Nov 1992 05:58:33 GMT Lines: 19