NDLI: Execution privatization for scheduler-oblivious concurrent programs

Content Provider	ACM Digital Library
Author	Zhang, Charles Huang, Jeff
Abstract	Making multithreaded execution less non-deterministic is a promising solution to address the difficulty of concurrent programming plagued by the non-deterministic thread scheduling. In fact, a vast category of concurrent programs are scheduler-oblivious: their execution is deterministic, regardless of the scheduling behavior. We present and formally prove a fundamental observation of the privatizability property for scheduler-oblivious programs, that paves the theoretical foundation for privatizing shared data accesses on a path segment. With privatization, the non-deterministic thread interleavings on the privatized accesses are isolated and as the consequence many concurrency problems are alleviated. We further present a path and context sensitive privatization algorithm that safely privatizes the program without introducing any additional program behavior. Our evaluation results show that the privatization opportunity pervasively exists in real world large complex concurrent systems. Through privatization, several real concurrency bugs are fixed and notable performance improvements are also achieved on benchmarks.
Starting Page	737
Ending Page	752
Page Count	16
File Format	PDF
ISSN	03621340 15581160
DOI	10.1145/2398857.2384670
Journal	ACM SIGPLAN Notices (SIGP)
Volume Number	47
Issue Number	10
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1983-05-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Privatization Concurrency Scheduler-oblivious
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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