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Performance and power evaluation of clustered VLIW processors with wide functional units

機(jī)譯:具有寬功能單元的集群VLIW處理器的性能和功耗評估

摘要

Architectural resources and program recurrences are themain limitations to the amount of Instruction-Level Parallelism (ILP) exploitable from loops. To increase the number of operations per second, current designs use high degrees of resource replication for memory ports and functional units. But the high costs in terms of power and cycle time of this technique limit the degree of replication.udClustering is a technique aimed at decentralizing the design of future wide issue cores and enable them to meet the technology constraints in terms of cycle time, area and power. Another way to reduce the complexity of recent cores is using wide functional units. This technique only requires minor modifications to the underlying hardware, but also imposes a penalty on the exploitable parallelism.udIn this paper we evaluate a broad range of VLIW configurations that make use of these two techniques. From this study we conclude that applying both techniques yields configurations with very good power-performance efficiency.
機(jī)譯:架構(gòu)資源和程序重復(fù)性是可從循環(huán)利用的指令級并行性(ILP)數(shù)量的主要限制。為了增加每秒的操作數(shù)量,當(dāng)前的設(shè)計(jì)對存儲器端口和功能單元使用高度的資源復(fù)制。但是,此技術(shù)在功率和循環(huán)時(shí)間方面的高成本限制了復(fù)制的程度。 udClustering是一種旨在分散未來廣泛發(fā)行的核的設(shè)計(jì)并使其能夠滿足循環(huán)時(shí)間,面積方面的技術(shù)約束的技術(shù)和力量。減少最新內(nèi)核復(fù)雜性的另一種方法是使用寬功能單元。該技術(shù)只需要對基礎(chǔ)硬件進(jìn)行少量修改,還對可利用的并行性施加了懲罰。 ud在本文中,我們評估了利用這兩種技術(shù)的各種VLIW配置。根據(jù)這項(xiàng)研究,我們得出結(jié)論,同時(shí)使用這兩種技術(shù)可產(chǎn)生具有非常好的電源性能效率的配置。

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