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2006
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CORD: cost-effective (and nearly overhead-free) order-recording and data race detection

12 years 8 months ago
CORD: cost-effective (and nearly overhead-free) order-recording and data race detection
Chip-multiprocessors are becoming the dominant vehicle for general-purpose processing, and parallel software will be needed to effectively utilize them. This parallel software is notoriously prone to synchronization bugs, which are often difficult to detect and repeat for debugging. While data race detection and order-recording for deterministic replay are useful in debugging such problems, only order-recording schemes are lightweight, whereas data race detection support scales poorly and degrades performance significantly. This paper presents our CORD (Cost-effective Order-Recording and Data race detection) mechanism. It is similar in cost to prior order-recording mechanisms, but costs considerably less then prior schemes for data race detection. CORD also has a negligible performance overhead (0.4% on average) and detects most dynamic manifestations of synchronization problems (77% on average). Overall, CORD is fast enough to run always (even in performance-sensitive production runs...
Milos Prvulovic
Added 01 Dec 2009
Updated 01 Dec 2009
Type Conference
Year 2006
Where HPCA
Authors Milos Prvulovic
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