Article View: comp.arch
Article #20986Re: CDC 205 et al
From: John McCalpin
Date: Tue, 02 May 1989 11:06
Date: Tue, 02 May 1989 11:06
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1478 bytes
In article <568309@vaxa.uwa.oz> g_ahrendt@vaxa.uwa.oz writes:
>... the following gives a more accurate picture,
>based on machines actually available, and not scheduled for production.
^^^^^^^^^^^^^^^^^^
>1. ETA US 10-G 10.3 Billion Instructions per Second
Not quite. The above figure is for an 8-cpu ETA-10G, and there exists
no such machine. The only ETA-10G in the world is the 4-cpu machine at
Florida State University. The 10.3 GFLOPS is also a ridiculously optimistic
estimate. The peak performance on our 4-cpu machine is about 4.5 GFLOPS.
To get that number up to 5.15 GFLOPS requires an extremely implausible
workload in the scalar processor operating concurrently with the vector
units and never accessing main memory....
--
---------------------- John D. McCalpin ------------------------
Dept of Oceanography & Supercomputer Computations Research Institute
mccalpin@masig1.ocean.fsu.edu mccalpin@nu.cs.fsu.edu
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!gatech!prism!loligo!mccalpin From: mccalpin@loligo.cc.fsu.edu (John McCalpin) Newsgroups: comp.arch Subject: Re: CDC 205 et al Message-ID: <657@loligo.cc.fsu.edu> Date: 2 May 89 11:06:31 GMT References: <568309@vaxa.uwa.oz> Reply-To: mccalpin@loligo.cc.fsu.edu (John McCalpin) Organization: Supercomputer Computations Research Institute Lines: 18