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Reproducing bugs is hard. Deterministic replay systems address this problem by providing a high-fidelity replica of an original program run that can be repeatedly executed to zero-in on bugs. Unfortunately, existing replay systems for multiprocessor programs fall short. These systems either incur high overheads, rely on non-standard multiprocessor hardware, or fail to reliably reproduce executions. Their primary stumbling block is data races -- a source of nondeterminism that must be captured if executions are to be faithfully reproduced.
Altekar et al. (Sun,) studied this question.
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