Date: Tue, 01 Jul 1997 19:00:26 +0200 From: Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> To: "Marc G. Fournier" <scrappy@hub.org> Cc: questions@FreeBSD.ORG Subject: Re: Benchmarks/comparisions between PC->Sparc Message-ID: <19970701190026.07877@gil.physik.rwth-aachen.de> In-Reply-To: <Pine.NEB.3.95.970701121533.20086D-100000@hub.org>; from Marc G. Fournier on Tue, Jul 01, 1997 at 12:16:27PM -0400 References: <Pine.NEB.3.95.970701121533.20086D-100000@hub.org>
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On Tue, Jul 01, 1997 at 12:16:27PM -0400, Marc G. Fournier wrote: > > Hi... > > Does anyone know of URLs for comparisons between the two? Stuff > like SPECint and anything else that would be pertinent to a discussion of > the merits of either/or? > > Thanks... > > Marc G. Fournier scrappy@hub.org > Systems Administrator @ hub.org scrappy@freebsd.org > I don't have an URL but appended is a saved mail from the questions list on this issue: -- Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de > From owner-freebsd-questions@freefall.freebsd.org Wed Feb 12 20:38:19 1997 > Received: from bsd.fs.bauing.th-darmstadt.de (bsd.fs.bauing.th-darmstadt.de [130.83.63.241]) by gilberto.physik.rwth-aachen.de (8.8.4/8.6.9) with ESMTP id UAA13274 for <kuku@gilberto.physik.RWTH-Aachen.DE>; Wed, 12 Feb 1997 20:38:18 +0100 (MET) > Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.18]) by bsd.fs.bauing.th-darmstadt.de (8.8.2/8.8.2) with ESMTP id UAA20775; Wed, 12 Feb 1997 20:32:24 +0100 (MET) > Received: from localhost (daemon@localhost) > by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id LAA20992; > Wed, 12 Feb 1997 11:18:09 -0800 (PST) > Received: (from root@localhost) > by freefall.freebsd.org (8.8.5/8.8.5) id LAA20981 > for questions-outgoing; Wed, 12 Feb 1997 11:18:07 -0800 (PST) > Received: from fusion.gage.com (brimstone.gage.com [205.217.2.10]) > by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id LAA20974 > for <questions@freebsd.org>; Wed, 12 Feb 1997 11:18:03 -0800 (PST) > Received: (from mail@localhost) > by fusion.gage.com (8.8.3/8.8.4) > id NAA08873; Wed, 12 Feb 1997 13:17:54 -0600 (CST) > Received: from octopus.gage.com(158.60.57.50) by fusion.gage.com via smap (V2.0beta) > id xma008869; Wed, 12 Feb 97 13:17:51 -0600 > Received: from squid.gage.com (squid [158.60.57.101]) by octopus.gage.com (8.7.5/8.7.3) with SMTP id NAA21969; Wed, 12 Feb 1997 13:17:51 -0600 (CST) > Received: from schemer by squid.gage.com (NX5.67e/NX3.0S) > id AA22714; Wed, 12 Feb 97 13:17:50 -0600 > Message-Id: <9702121917.AA22714@squid.gage.com> > Received: by schemer.gage.com (NX5.67g/NX3.0X) > id AA01171; Wed, 12 Feb 97 13:17:49 -0600 > Content-Type: text/plain > Mime-Version: 1.0 (NeXT Mail 4.0 v146.2) > In-Reply-To: <199702121833.KAA18506@freefall.freebsd.org> > X-Nextstep-Mailer: Mail 3.3 (Enhance 1.3) > Received: by NeXT.Mailer (1.146.2) > From: Ben Black <black@gage.com> > Date: Wed, 12 Feb 97 13:17:48 -0600 > To: "Jonathan M. Bresler" <jmb@freefall.freebsd.org> > Subject: Re: UltraSPARC and MicroSPARC vs Pentium Pro ? > Cc: mcwong@hotmail.com (M.C Wong), questions@FreeBSD.ORG > References: <199702121833.KAA18506@freefall.freebsd.org> > Sender: owner-questions@FreeBSD.ORG > X-Loop: FreeBSD.org > Precedence: bulk > Status: RO > > >quick dirty answer: > > Integer: the intel boxes kill the snot out of *all* suns > > Float: the ultras outperform intel boxes. > > see numbers below which indicate that a P6-200 slightly outperforms a 200MHz > UltraSPARC in integer, while the UltraSPARC actually does "kill the snot" > out of the P6 in floating point. > > >long answer: > > the sparc architecture is limited in its ability to perform > > integer operations. my suspicion is that the memory bandwidth > > is not up to the task. (surely, its not the cpu itself, but > > rather feeding data and instructions to the cpu that is the > > limiting factor.) > > thank you, mr. wizard. unfortunately, completely wrong. the UltraSPARC > machines all use the UPA crossbar switch which gives a bandwidth of over > 1GB/s. compare that to a typical PC bus which is usually around 400MB/s (and > is not switched, as the UPA is). quite simply, current mass produced Intel > boards just can't compete for I/O bandwidth. > > if memory bandwidth *were* the problem, you'd expect it to show up in the > floating point benchmarks. > > as for "killing the snot out of Sun" in integer performance, the SPECint95 > numbers just don't show it: > > SPECint95 SPECfp95 > Intel Alder 200MHz P6 8.09 6.75 > Sun Ultra 2 1200 200MHz 7.72 11.1 > > if i get a chance, i will run the HiNT benchmarks on an UltraSPARC and a P6 > here. i doubt i will see any snot flying from the Sun. > > benchmarks, of course, can always say what you want them to. > > > b3n >
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