NDLI: An Efficient Algorithm to Determine Equivalence of Pipelined Dependency Graphs for Their Simplification

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An Efficient Algorithm to Determine Equivalence of Pipelined Dependency Graphs for Their Simplification

Content Provider	Semantic Scholar
Author	Kagotani, Hiroto Sugiyama, Yuji Okamoto, Takuji
Copyright Year	2017
Abstract	あらまし依存性グラフに基づいた非同期式パイプライン制御回路の設計方法が提案されている.この設計法の最終段階においては,依存性グラフと縮小した依存性グラフの等価性を何度も繰返し判定することにより,簡単化した依存性グラフが得られる.しかし,この判定には多数の状態をもつオートマトンを扱うため,その計算量は極めて大きい.本論文では,この等価性判定のための新たな効率的なアルゴリズムを提案する.まず,基本操作の実行順序の半順序をコンパクトに表現するために,基本操作直結因果関係グラフ Ȯ を定義する.次に,分岐系列ごとに Ȯ の高々二つの部分グラフが一致するとき,かつそのときに限り,二つの依存性グラフが等価であることを証明する.更に,等価性の判定に必要な分岐系列のサイズと数が有限であることを証明する.最後に, 上述の原理を用いたアルゴリズムの計算量が従来法に比べて大幅に小さいことを示す. キーワード非同期式制御回路,パイプライン,簡単化,因果関係
Starting Page	616
Ending Page	626
Page Count	11
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://ousar.lib.okayama-u.ac.jp/files/public/5/55178/2017060211130126645/j100-d_6_616.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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