Memory Components White Papers
Cache Filtering Techniques to Reduce the Negative Impact of Useless Speculative Memory References on Processor Performance
Overview High-performance processors employ aggressive speculation and prefetching techniques to increase performance. Speculative memory references caused by these techniques sometimes bring data into the caches that are not needed by correct execution. This paper proposes the use of the first-level caches as filters that predict the usefulness of speculative memory references. With the proposed technique, speculative memory references bring data only into the first-level caches rather than all levels in the cache hierarchy. The processor monitors the use of the cache blocks in the first-level caches and decides which blocks to keep in the cache hierarchy based on the usefulness of cache blocks.
| Publisher | University of Texas | File Format | |
|---|---|---|---|
| Date Published | May 2007 | Downloads | 1 |
| Format | White Papers | ||
| Topics | |||
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