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I2PC Seminar Series - Volition: Scalable and Precise Sequential Consistency Violation Detection


Xuehai Qian (University of Illinois)

Date Apr 25, 2013
Time 4:00 pm - 5:00 pm  

Central Time


Siebel Center 2405




Illinois-Intel Parallelism Center


Meg Osfar

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Originating Calendar I2PC Events

Illinois-Intel Parallelism Center (I2PC) Distinguished Speaker Series

Thursday, April 25th, 4-5pm Central Time, Siebel Center 2405


 Volition: Scalable and Precise Sequential Consistency Violation Detection

                                     Xuehai Qian
                                University of Illinois

ABSTRACT: Sequential Consistency (SC) is the most intuitive memory model, and SC Violations (SCVs) produce unintuitive, typically incorrect executions. Most prior SCV detection schemes have used data races as proxies for SCVs, which is highly imprecise. Other schemes that have targeted data-race cycles are either too conservative or are designed only for two-processor cycles and snoopy-based systems. In this talk, I will present Volition, the first hardware scheme that detects Sequential Consistency Violations (SCVs) in a relaxed-consistency machine precisely, in a scalable manner, and for an arbitrary number of processors in the cycle. Volition enhances programmability, while inducing negligible traffic and execution overhead.

BIO: Xuehai Qian is a Ph.D candidate in the Department of Computer Science at the University of Illinois, Urbana-Champaign. His research focuses on multicore and parallel computer architecture, and programming models for parallelism. He received an MS in Computer Science from the Institute of Computing Technology (ICT), Chinese Academy of Sciences (CAS), and a BS in Computer Engineering from Beihang University, Beijing.


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