Dead-block prediction & dead-block correlating prefetchers
نویسندگان
چکیده
منابع مشابه
Dead-block prediction & dead-block correlating prefetchers
Effective data prefetching requires accurate mechanisms to predict both “which” cache blocks to prefetch and “when” to prefetch them. This paper proposes the DeadBlock Predictors (DBPs), trace-based predictors that accurately identify “when” an L1 data cache block becomes evictable or “dead”. Predicting a dead block significantly enhances prefetching lookahead and opportunity, and enables placi...
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Dead block predictors (DBPs) improve cache efficiency by identifying blocks that have exhausted their useful lifetime in the cache and prioritizing them for eviction regardless of how much reuse these blocks have experienced. In doing so, DBPs go beyond insertion policies that target only those blocks that have no cache reuse. But how much value do DBPs add over insertion policies? This work ex...
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The common storage stack as found in most operating systems has remained unchanged for several decades. In this stack, the RAID layer operates under the file system layer, at the block abstraction level. We argue that this arrangement of layers has fatal flaws. In this paper, we highlight its main problems, and present a new storage stack arrangement that solves these problems.
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Although caches for decades have been the backbone of the memory system, the speed gap between CPU and main memory suggests their augmentation with prefetching mechanisms. Recently, sophisticated hardware correlating prefetching mechanisms have been proposed, in some cases coupled with some form of dead-block prediction. In many proposals, however, correlating prefetchers demand a significant i...
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Power-conscious design using hardware and/or software means has become crucial for both mobile and high performance processors. This paper explores integrated software and circuit level technique to reduce the leakage energy in iL1-cache of high performance microprocessors by eliminating the basic blocks from the cache, soon after they become ‘dead’. The impact of eliminating dead blocks on pro...
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ژورنال
عنوان ژورنال: ACM SIGARCH Computer Architecture News
سال: 2001
ISSN: 0163-5964
DOI: 10.1145/384285.379259