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SUMMARY:PARSA seminar: Tagless Directory Coherence and Phantom-BTB
DTSTART:20091030T151500
DTSTAMP:20260929T060933Z
UID:9ef9dc95f7c1a1c5183334504845e94863874aa194955dbc0aca5392
CATEGORIES:Conferences - Seminars
DESCRIPTION:While modern processors are capable of processing data at neve
 r before \nseen speeds\, this capability must be matched with an equally c
 apable \nmemory system. It is for this reason that a large chunk of modern
  \nprocessor chips is devoted to the memory hierarchy. Our work has been \
 nlooking at the design of these memory hierarchies. I will overview two \n
 recent results. The first\, Phantom-BTB\, freeloads on the existing memory
  \nhierarchy to store program metadata. This is information about program 
 \nbehavior that is used at runtime to anticipate performance or other \nde
 grading events and act accordingly to improve system behavior. \nPhantom-B
 TB uses the on-chip memory hierarchy to obtain the performance \npossible 
 with otherwise impractical to build (too large and too slow) \nstructures.
  The second work\, revisits on-chip memory coherence\, that is\, \nhow a p
 rocessor can find where and who has copies of cached memory data. \nCohere
 nce can greatly impact program performance in today's chip \nmultiprocesso
 rs. Taking advantage of the opportunities that on-chip \nintegration offer
 s\, tagless coherence reduces the cost of implementing \ncoherence while m
 aintaining competitive performance.\n\nBIO: Andreas Moshovos is an associa
 te professor at the University of \nToronto. He has taught computer archit
 ecture also at Northwestern \nUniversity\, the Hellenic Open University an
 d the National University of \nAthens\, Greece. He learned about computer 
 architecture first at the \nUniversity of Crete\, Greece\, and then at the
  University of Wisconsin-\nMadison where he worked on memory dependence pr
 ediction\, a technique \nused in many modern processor designs\, until 199
 8. Andreas is interested \nin designing computer systems that take advanta
 ge of program behavior to \nimprove performance\, power and other characte
 ristics. He received the \nNational Science Foundation CAREER award in 200
 0\, a Semiconductor \nResearch Corporation Inventor Recognition Award in 2
 003\, and IBM Faculty \nPartnership Awards in 2008 and 2009.
LOCATION:BC 410 https://plan.epfl.ch/?room==BC%20410
STATUS:CONFIRMED
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