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CIS3023: Programming Fundamentals for CIS Majors II Summer 2010

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Lecture 4: Directory Protocols and TM

Lecture 4: Directory Protocols and TM. Topics: corner cases in directory protocols, lazy TM. Handling Reads. When the home receives a read request, it looks up memory (speculative read) and directory in parallel Actions taken for each directory state:

273 views • 27 slides

Lecture 10: Coherence, Transactional Memory

Lecture 10: Coherence, Transactional Memory. Topics: coherence wrap-up, coherence vs. message-passing, lazy TM implementations. Writeback Cases. P1. P2. Fwd. Wback. Rd or Wr. D3 E: P1 ? busy. If someone else has the block in exclusive, D3 moves to busy

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Lecture 9: Directory Protocol, TM

Lecture 9: Directory Protocol, TM. Topics: corner cases in directory protocols, coherence vs. message-passing, TM intro. Handling Write Requests. The home node must invalidate all sharers and all invalidations must be acked (to the requestor), the

214 views • 21 slides