| Effectiveness of Arithmetic Code Protection in Dual ALU System |
college |
| topic: |
ECE753 (Fault-Tolerant Computer Systems), Univ. of Wisconsin - Madison |
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A duplicate system has two identical pieces of hardware
which perform the same computation in parallel and then compare the results; if they disagree, an error message is generated. The duplicate system cannot tolerate faults but can only detect them. There is no method of determining which unit
is faulty. However, a duplicate system can mask faults if the voter knows which unit is faulty.
We implemented an AN code protected duplicate ALU system. We injected arbitrary faults and measured the fault detection capability. We found a 90% improvement in our duplex system over the simplex system. |
| formats: |
Adobe PDF (59.8kB), PostScript (347.7kB)
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1998-05-09 |
quality 5 |
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