1997 Fiscal Year Annual Research Report

一般的ネットワーク構造を持つ異機種分散型システムにおける最適負荷分散の研究

Research Project

Project/Area Number	08458061
Research Institution	UNIVERSITY OF TSUKUBA
Principal Investigator	李頡筑波大学, 電子・情報工学系, 助教授 (50251046)
Co-Investigator(Kenkyū-buntansha)	亀田壽夫筑波大学, 電子・情報工学系, 教授 (10011660)
Keywords	分散コンピュータシステム / 負荷分散 / システムの性能 / 一般的ネットワーク構造 / 最適化 / アルゴリズム
Research Abstract	分散コンピュータシステムの中で、負荷を分散して、システムの資源(CPU、メモリ、ネットワーク、I/O装置など)の効率的な利用をはかることは、分散コンピュータシステムの一つ重要な問題です。システムの性能(ジョブの平均応答時間、システムのスループットなど)を向上させ、分散システムの資源を最大限に利用するのが最適負荷分散です。本研究では、まず、一般的ネットワーク構造を持つ異機種分散システムにおける最適負荷分散問題を、ジョブの平均応答時間を最小化する非線形最適問題として定式化しました。また、その問題の解の満足すべき必要十分条件を導きました。さらに、その解の構造に基づき、一般的なネットワーク構造を持つ分散システムにおける最適負荷分散問題が、各ノードをセントラルノードとし、その隣のノードを、衛星ノードとする簡単なスター型分散システムにおける最適負荷分散問題に分解できることを解明しました。そして、一つの分解アルゴリズムを新しく提案しました。提案したアルゴリズムは二つのよい特徴を持っています。一つの特徴は分散で負荷分散を行なうことです。つまり、全体の複雑なネットワークをノードごとに簡単なスター型ネットワークに分解して負荷分散を行なうので、分解されたスター型ネットワークのセントラルノードとその隣のノードの情報の交換しか必要ありません。もう一つの特徴は、構造的に簡単であることです。提案したアルゴリズムの有効性を解明するため、われわれは、他のアルゴリズムとメモリ需要量と計算時間需要量に対して比較し、計算実験によって提案したアルゴリズムが優れた性能を持つことを解明しました。また、分散システムにおける動的負荷分散方式を検討し、ある種の実験を行ないました。さらに、その研究の応用として、最近話題となっている移動通信網での負荷分散法を用いた最適なセルの割り当て問題についても研究を行ないました。

Research Products
(17 results)

All Other

All Publications (17 results)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Simulation Studies on Concurrency Control in Parallel Transaction Processing Systems" Parallel Computing. 23・6. 755-775 (1997)
[Publications] Jie Li, Hisao Kameda, and Hideo Itoh: "Optimal Assignment of Cells in PCN Networks" Springer-Verlag Personal Technologies. 1. 127-134 (1997)
[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Modeling of Declustered-Parity RAID Considering Uncorrectable Bit Errors" IEICE Trans.on Fundamentals of Electronics,Communications and Computer Sciences. E80-A・8. 1508-1515 (1997)
[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Modeling of Disk Array Organizations by Considering Uncorrectable Bit Errors" IEICE Trans.on Information and Systems. E81-D・1. 73-80 (1998)
[Publications] Jie Li and H, Kameda: "Load Balancing Problems for Multi-class Jobs in Distributed/Parallel Computer Systems" IEEE Trans.on Computers(To appear in March issue,1998).
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Distributed Concurrency Control with Local Wait-Depth Control Policy" accepted for publication in IEICE Trans.on Information and Systems.
[Publications] Jie Li, Hisao Kameda, and Hideto Itoh: "Balanced Assignment of Cells in PCS Networks" Proc.of 12th ACM Symposium on Applied Computing(SAC'97),USA. 297-301 (1997)
[Publications] Keqin Li, and Jie Li: "On Stochastic Load Balancing inHeterogeneous Distributed Systems" Proc.of 3rd International Conference on Computer Science and Informatics,USA. 231-234 (1997)
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Parallel Transaction Processing Based on Wait-Depth Priority over an Interconnection Networking Environment" Proc.of the 13th International Conference on Advanced Science and Technology(ICAST97),USA. 249-255 (1997)
[Publications] Jie Li, Jiahong Wang, Hisao Kameda and Keqin Li: "An Effective Scheduling Algorithm for Parallel Transaction Processing Systems" Proc.IEEE National Aerospace & Electronics Conference(NAECON'97)(最優秀論文賞(The Best Paper Award)受賞),USA. 181-188 (1997)
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "High Performance Parallel Transaction Processing" Proc.of International Conference on Parallel and Distributed Computing and Networks,Singapore. 27-30 (1997)
[Publications] Hisao Kameda, Takayuki Kozawa, and Jie Li: "Anomalous Relations among Various Performance Objectives in Distributed Computer Systems" Proc.of 1st World Congress on Systems Simulation(WCSS'97),Singapore. 283-297 (1997)
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Performance of Dynamic Locking with No-waiting Policy in Parallel Transaction Processing Systems" Proc.of 2nd International Conference on Parallel Processing and Applied Mathematics(PPAM'97),Poland. 176-184 (1997)
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Scheduling Algorithms for Parallel Transaction Processing Systems" Proc.of International Conference on Parallel Computing Technologies(PaCT-97) LNCS series(Springer Verlag). 283-297 (1997)
[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Analysis of Disk Array Organizations by Considering Uncorrectable Bit Errors" Proc.of 16th IEEE Symposium on Reliable Distributed Systems,USA. 2-9 (1997)
[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Performance Study of Shared-Nothing Parallel Transaction Processing Systems" Proc.of International Conference on the Performance and Management of Complex Communication Networks(PMCCN'97),Japan. 161-180 (1997)
[Publications] 亀田壽夫、紀一誠、李頡: "性能評価の基礎と応用" 共立出版(To appear),

1997 Fiscal Year Annual Research Report

一般的ネットワーク構造を持つ異機種分散型システムにおける最適負荷分散の研究

Principal Investigator

李 頡 筑波大学, 電子・情報工学系, 助教授 (50251046)

Research Products

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Simulation Studies on Concurrency Control in Parallel Transaction Processing Systems" Parallel Computing. 23・6. 755-775 (1997)

[Publications] Jie Li, Hisao Kameda, and Hideo Itoh: "Optimal Assignment of Cells in PCN Networks" Springer-Verlag Personal Technologies. 1. 127-134 (1997)

[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Modeling of Declustered-Parity RAID Considering Uncorrectable Bit Errors" IEICE Trans.on Fundamentals of Electronics,Communications and Computer Sciences. E80-A・8. 1508-1515 (1997)

[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Modeling of Disk Array Organizations by Considering Uncorrectable Bit Errors" IEICE Trans.on Information and Systems. E81-D・1. 73-80 (1998)

[Publications] Jie Li and H, Kameda: "Load Balancing Problems for Multi-class Jobs in Distributed/Parallel Computer Systems" IEEE Trans.on Computers(To appear in March issue,1998).

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Distributed Concurrency Control with Local Wait-Depth Control Policy" accepted for publication in IEICE Trans.on Information and Systems.

[Publications] Jie Li, Hisao Kameda, and Hideto Itoh: "Balanced Assignment of Cells in PCS Networks" Proc.of 12th ACM Symposium on Applied Computing(SAC'97),USA. 297-301 (1997)

[Publications] Keqin Li, and Jie Li: "On Stochastic Load Balancing inHeterogeneous Distributed Systems" Proc.of 3rd International Conference on Computer Science and Informatics,USA. 231-234 (1997)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Parallel Transaction Processing Based on Wait-Depth Priority over an Interconnection Networking Environment" Proc.of the 13th International Conference on Advanced Science and Technology(ICAST97),USA. 249-255 (1997)

[Publications] Jie Li, Jiahong Wang, Hisao Kameda and Keqin Li: "An Effective Scheduling Algorithm for Parallel Transaction Processing Systems" Proc.IEEE National Aerospace & Electronics Conference(NAECON'97)(最優秀論文賞(The Best Paper Award)受賞),USA. 181-188 (1997)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "High Performance Parallel Transaction Processing" Proc.of International Conference on Parallel and Distributed Computing and Networks,Singapore. 27-30 (1997)

[Publications] Hisao Kameda, Takayuki Kozawa, and Jie Li: "Anomalous Relations among Various Performance Objectives in Distributed Computer Systems" Proc.of 1st World Congress on Systems Simulation(WCSS'97),Singapore. 283-297 (1997)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Performance of Dynamic Locking with No-waiting Policy in Parallel Transaction Processing Systems" Proc.of 2nd International Conference on Parallel Processing and Applied Mathematics(PPAM'97),Poland. 176-184 (1997)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Scheduling Algorithms for Parallel Transaction Processing Systems" Proc.of International Conference on Parallel Computing Technologies(PaCT-97) LNCS series(Springer Verlag). 283-297 (1997)

[Publications] Xuefeng Wu, Jie Li, and Hisao Kameda: "Reliability Analysis of Disk Array Organizations by Considering Uncorrectable Bit Errors" Proc.of 16th IEEE Symposium on Reliable Distributed Systems,USA. 2-9 (1997)

[Publications] Jiahong Wang, Jie Li, and Hisao Kameda: "Performance Study of Shared-Nothing Parallel Transaction Processing Systems" Proc.of International Conference on the Performance and Management of Complex Communication Networks(PMCCN'97),Japan. 161-180 (1997)

[Publications] 亀田 壽夫、紀 一誠、李 頡: "性能評価の基礎と応用" 共立出版(To appear),

李頡筑波大学, 電子・情報工学系, 助教授 (50251046)

[Publications] 亀田壽夫、紀一誠、李頡: "性能評価の基礎と応用" 共立出版(To appear),