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SUMMARY:Enabling Runtime Monitoring on Multicores for Performance and Reli
 ability - Vijayanand Nagarajan
DTSTART:20100609T153000Z
DTEND:20100609T163000Z
UID:TALK25143@talks.cam.ac.uk
CONTACT:Prof Simon Moore
DESCRIPTION:With the advent of multicores\, there is demand for monitoring
  parallel\nprograms for a wide range of applications including those relat
 ed to\nimprovement of performance and reliability. Debugging tools such as
 \ndata race detection\, tools such as DIFT (dynamic information flow\ntrac
 king) for detecting software attacks\, techniques such as\nspeculative par
 allelisation that strive to expose parallelism and\nimprove performance\, 
 are examples of applications that require a\nparallel program to be monito
 red during runtime. While each of the\nabove monitoring applications are q
 uite different in their purpose and\nimplementation\, they all share a com
 mon requirement in the context of\nmonitoring a parallel program -- the ne
 ed to detect and react to\ninterprocessor shared memory dependences (ISMDs
 ).\n\nIn this talk\, we propose a simple architectural extension in the fo
 rm\nof ECMon: support for exposing cache events to the software\, in\neffe
 ct\, efficiently exposing the ISMDs to software. We demonstrate how\na wid
 e variety of monitoring applications\, including those for\nsecurity attac
 k detection\, those that allow speculation past barrier\nsynchronisations\
 , and those for ensuring sequential consistency in a\nmachine with a relax
 ed memory model\, can be implemented efficiently\nusing this support.\n\nB
 io: Vijay Nagarajan recently joined the University of Edinburgh as a\nlect
 urer. He obtained his PhD in Computer Science from the University\nof Cali
 fornia\, Riverside and Masters in Computer Science from\nUniversity of Ari
 zona. His research interests span the areas of\ncomputer architecture\, co
 mpilers\, and software engineering and has\npublished in some of the premi
 er conferences and journals in these\nareas. More information about his re
 search can be found at\nhttp://homepages.inf.ed.ac.uk/vnagaraj/
LOCATION:SS03\, Computer Laboratory\, William Gates Building
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