一種用于2維數(shù)據(jù)訪問的緩存管理算法
發(fā)布時間:2019-06-22 20:02
【摘要】:2維數(shù)據(jù)以1維的形式進(jìn)行處理和存儲,2維空間相鄰的節(jié)點被不同的映射算法映射到1維空間的不同位置.不同位置導(dǎo)致了不同的訪問距離和訪問延遲.提出了度量訪問距離的指標(biāo),計算了4種主要映射算法的指標(biāo)值,發(fā)現(xiàn)并分析了不同算法指標(biāo)值之間的差異.通過在緩存中增加用于預(yù)取的空間,利用了Z-ordering和Hilbert映射算法在一定范圍內(nèi)能更好地簇集映射位置的特性,提高了緩存命中率,從而改善了2維數(shù)據(jù)的訪問速度,優(yōu)化了系統(tǒng)性能.
[Abstract]:The two-dimensional data is processed and stored in the form of one dimensional, and the adjacent nodes in the two-dimensional space are mapped to different positions in the one-dimensional space by different mapping algorithms. Different locations lead to different access distances and access delays. In this paper, the index of measuring access distance is proposed, the index values of four main mapping algorithms are calculated, and the differences among the index values of different algorithms are found and analyzed. By adding the space for prefetching in the cache, the Z-ordering and Hilbert mapping algorithms can better cluster mapping location in a certain range, improve the cache hit rate, thus improve the access speed of 2D data and optimize the system performance.
【作者單位】: 廣東金融學(xué)院計算機(jī)科學(xué)與技術(shù)系;
【基金】:廣東省自然科學(xué)基金項目(S2012040007847)
【分類號】:TP333
本文編號:2504912
[Abstract]:The two-dimensional data is processed and stored in the form of one dimensional, and the adjacent nodes in the two-dimensional space are mapped to different positions in the one-dimensional space by different mapping algorithms. Different locations lead to different access distances and access delays. In this paper, the index of measuring access distance is proposed, the index values of four main mapping algorithms are calculated, and the differences among the index values of different algorithms are found and analyzed. By adding the space for prefetching in the cache, the Z-ordering and Hilbert mapping algorithms can better cluster mapping location in a certain range, improve the cache hit rate, thus improve the access speed of 2D data and optimize the system performance.
【作者單位】: 廣東金融學(xué)院計算機(jī)科學(xué)與技術(shù)系;
【基金】:廣東省自然科學(xué)基金項目(S2012040007847)
【分類號】:TP333
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