Exploiting Application-Level Correctness for Low-Cost Fault Tolerance

  title={Exploiting Application-Level Correctness for Low-Cost Fault Tolerance},
  author={Xuanhua Li and Donald Yeung},
  journal={J. Instruction-Level Parallelism},
Traditionally, fault tolerance researchers have required architectural state to be numerically perfect for program execution to be correct. However, in many programs, even if execution is not 100% numerically correct, the program can still appear to execute correctly from the user’s perspective. Hence, whether a fault is unacceptable or benign may depend on the level of abstraction at which correctness is evaluated, with more faults being benign at higher levels of abstraction, i.e. at the user… CONTINUE READING
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