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- From: knut@uni-paderborn.de (Knut Menzel)
- Subject: Correction: Re: World's Most Powerful Computing Sites
- Message-ID: <1993Jan27.123815.9356@hubcap.clemson.edu>
- Sender: fpst@hubcap.clemson.edu (Steve Stevenson)
- Nntp-Posting-Host: ruhr.uni-paderborn.de
- Reply-To: knut@uni-paderborn.de
- Organization: University of Paderborn
- References: <1993Jan20.163946.1607@hubcap.clemson.edu> <1993Jan20.211032.11929@hubcap.clemson.edu>
- Date: 27 Jan 1993 09:21:47 GMT
- Approved: parallel@hubcap.clemson.edu
- Lines: 34
-
- In article <1993Jan20.211032.11929@hubcap.clemson.edu>, richard@meiko.com (Richard Cownie) writes:
- |> knut@uni-paderborn.de (Knut Menzel) writes:
- |> :
- |> : 4.4 Gflops - (1992)
- |> : Paderborn Center for Parallel Computing
- |> : pcpc@uni-paderborn.de
- |> : 1) Parsytec SuperCluster, 320 Inmos T800, 900 Mflops
- |> : 2) Parsytec GC Giga Cube, 1024 Inmos T805, 4.4 Gflops
- ^^^^
- It's new
- |> : -- Knut Menzel
- |>
- |> This seems to imply a figure of over 4MFLOPS per T800. Last time
- |> I programmed one, it was a real struggle to achieve over 1MFLOPS
- |> even for inner loops of vector routines. Not that 4MFLOPS is
- |> necessarily a lie, you might manage it if you're adding two 32-bit
- |> zeros (and never storing the result). But it's certainly stretching
- |> the truth a long way: there are lies, damned lies, and statistics.
-
- Sorry, it is the T805 (30 MHz) and the given peak (!) performance is
- about 4.4 MFlops. However, I assume everybody knows about peak performance
- and its real value. In addition my opinion is that most of the given
- performance values in the presented list are peak values.
-
- -- Knut Menzel
- --------------------------------------------------------------------------
- Knut Menzel University of Paderborn
- email: knut@uni-paderborn.de Department of Computer Science FB17
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