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- W4230054938 abstract "The ever-increasing computational power of contemporary microprocessors reduces the execution time spent on arithmetic computations (i.e., the computations not involving slow memory operations such as cache misses) significantly. Therefore, for memory intensive workloads, it becomes more important to overlap multiple cache misses than to overlap slow memory operations with other computations. In this paper, we propose a novel technique to parallelize sequential cache misses, thereby increasing memory-level parallelism (MLP). Our idea is based on the value prediction, which was proposed originally as an instruction-level-parallelism (ILP) optimization to break true data dependencies. In this paper, we advocate value prediction in its capability to enhance MLP instead of ILP. We propose to use value prediction and value speculative execution only for prefetching so that the complex prediction validation and misprediction recovery mechanisms are avoided and only minor changes in the microarchitecture are needed. The same hardware modifications also enable aggressive memory disambiguation for prefetching. The experimental results show that our technique enhances MLP effectively and achieves significant speedups even with a simple stride value predictor." @default.
- W4230054938 created "2022-05-11" @default.
- W4230054938 creator A5072755725 @default.
- W4230054938 creator A5091080889 @default.
- W4230054938 date "2003-01-01" @default.
- W4230054938 modified "2023-09-28" @default.
- W4230054938 title "Enhancing memory level parallelism via recovery-free value prediction" @default.
- W4230054938 doi "https://doi.org/10.1145/782856.782859" @default.
- W4230054938 hasPublicationYear "2003" @default.
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