Article View: comp.arch
Article #2709Re: ATTACK OF KILLER MICROS
From: Eugene Brooks
Date: Fri, 20 Oct 1989 02:37
Date: Fri, 20 Oct 1989 02:37
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1395 bytes
>Assuming 8x8 nodes, a 512 node system takes three stages, a 4096 node >system takes 4 stages. Are 4 switch chips cheaper, or equivalent in >cost to a killer micro and 32 meg of memory? Oops! It should be, are 4 switch chips cheaper than 8 killer micros and 256 Meg of memory. The switch is 4 stages deep, but there are 8 micros hung on each switch port. The bottom line is that the switch is probably not more than half the cost of the machine, even given the fact that it is not a commodity part. Of course, a good design for the switch chip and node interface might become a commodity part! Depending on the cache hit rates one might hang more than one micro on each node and further amortize the cost of the switch. brooks@maddog.llnl.gov, brooks@maddog.uucp
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!uwm.edu!lll-winken!vette!brooks From: brooks@vette.llnl.gov (Eugene Brooks) Newsgroups: comp.arch Subject: Re: ATTACK OF KILLER MICROS Message-ID: <36281@lll-winken.LLNL.GOV> Date: 20 Oct 89 02:37:07 GMT References: <35825@lll-winken.LLNL.GOV> <1081@m3.mfci.UUCP> <35896@lll-winken.LLNL.GOV> <33798@ames.arc.nasa.gov> <35977@lll-winken.LLNL.GOV> <220@dg.dg.com> <36249@lll-winken.LLNL.GOV> Sender: usenet@lll-winken.LLNL.GOV Reply-To: brooks@maddog.llnl.gov (Eugene Brooks) Organization: Lawrence Livermore National Laboratory Lines: 14