7 Replies Latest reply on Oct 11, 2019 2:36 PM by andrewj

    The Cray 1A Supercomputer

    clem57

           Browsing the web, a saw this great picture of a famous CRAY 1A built in 1975 by Seymour Cray after four years of design work. It was revolutionary because it used ICs for the first time in a supercomputer even though they were around since the 1960's. Here is a picture of one in the computer museum.

       

      900px-Cray-1_%281%29.jpg

                               Courtesy of https://en.wikipedia.org/wiki/Cray-1



           What was interesting was someone decided to implement this machine on a FPGA. So in the matter of 40 years give or take a few, we have a quantum leap in technology

      and an impressive reduction in cost.

      spartan3_1600.jpg

       

       

      The Hardware

      The actual design was implemented in a Xilinx Spartan-3E 1600 development board.

      This is basically the biggest FPGA you can buy that doesn’t cost thousands of dollars for a devkit.

      The Cray occupies about 75% of the logic resources, and all of the block RAM.

       

      From the website: Homebrew Cray-1A

       

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