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Defect tolerance on the Teramac custom computer

Published: 16 April 1997 Publication History

Abstract

Teramac is a large custom computer which works correctly despite the fact that three quarters of its FPGAs contain defects. This is accomplished through unprecedented use of defect tolerance, which substantially reduces Teramac's cost and permits it to have an unusually complex interconnection network. Teramac tolerates defective resources, like gates and wires, that are introduced during the manufacture of its FPGAs and other components, and during assembly of the system. We have developed methods to precisely locate defects. User designs are mapped onto the system by a completely automated process that avoids the defects and hides the defect tolerance from the user. Defective components are not physically removed from the system.

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  1. Defect tolerance on the Teramac custom computer

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    Published In

    cover image Guide Proceedings
    FCCM '97: Proceedings of the 5th IEEE Symposium on FPGA-Based Custom Computing Machines
    April 1997
    ISBN:0818681594

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    IEEE Computer Society

    United States

    Publication History

    Published: 16 April 1997

    Author Tags

    1. FPGAs
    2. Teramac custom computer
    3. completely automated process
    4. complex interconnection network
    5. defect tolerance
    6. field programmable gate arrays
    7. large custom computer

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