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The Dirty-Block Index

Today – 4:15PM – Session 3A . The Dirty-Block Index. Vivek Seshadri Abhishek Bhowmick ∙ Onur Mutlu Phillip B. Gibbons ∙ Michael A. Kozuch ∙ Todd C. Mowry. Mismatch: Representation and Query. Sorted by Title. A. B. Get all the books written by author X. C. …. Z.

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The Dirty-Block Index

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  1. Today – 4:15PM – Session 3A The Dirty-Block Index Vivek Seshadri AbhishekBhowmick∙OnurMutlu Phillip B. Gibbons∙Michael A. Kozuch∙ToddC.Mowry

  2. Mismatch: Representation and Query Sorted by Title A B Get all the books written by author X C … Z

  3. Mismatch: Representation and Query Breadth First Search a b c d List all edges adjacent to vertex ‘a’ e

  4. Mismatch: Representation and Query List all dirty blocks of DRAM row R. Cache Tag Store D Tag D Tag D Tag D Tag D Tag D Tag D Tag D Tag Is block X dirty? Dirty Bit

  5. Dirty-Block Index Cache Tag Store List all dirty blocks of DRAM row R. Tag Tag Tag Tag Tag Tag Tag Tag Is block X dirty? DBI

  6. Many Optimizations DRAM-aware writeback Bypassing cache lookups Reducing ECC overhead Efficient cache flushing Load balancing memory accesses Bulk DMA Efficient write scheduling ... DBI

  7. Many Optimizations DRAM-aware writeback Bypassing cache lookups Reducing ECC overhead Efficient cache flushing Load balancing memory accesses Bulk DMA Efficient write scheduling ... DBI 31% performance over baseline 6% over best previous mechanism 8% cache area reduction

  8. Today – 4:15PM – Session 3A The Dirty-Block Index Vivek Seshadri AbhishekBhowmick∙OnurMutlu Phillip B. Gibbons∙Michael A. Kozuch∙ToddC.Mowry

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