Fault Tolerant Shared-Object Management System with Dynamic Replication Control Strategy

This paper is based on a dynamic replication control strategy for minimizing communications costs. In dynamic environments where the access pattern to share resources can not be predicted statically, it is required to monitor such parameter during the whole lifetime of the system so as to adapt it to new requirements. The shared-object management system is implemented in a centralized manner in which a master processor deals with the serialization of invocations. On one hand, we attempt to provide fault tolerance as a way to adjust the system parameters to work only with a set of correct processors to enhance system functionality. On the other hand, we attempt to furnish availability by masking the failure of the master processor. A new master processor is elected that resumes the master processor processing. Our shared-object management system modularity is realized through a Meta level implementation

GAP/D: VLSI Hardware for Parallel and Adaptive Distributed Genetic Algorithms

This paper presents GAP/D, a VLSI implementation of a dynamic adaptation scheme for the frequency of interdeme migration in distributed genetic algorithms (GA). Distributed GA, or multi-deme-based GA, uses multiple populations which evolve concurrently. The purpose of dynamic adaptation is to improve convergence performance so as to obtain better solutions. Through simulation experiments, we proved that our scheme achieves better performance than fixed frequency migration schemes

協調探索における通信戦略の研究

1 Introduction 2 Communication in Distributed Problem Solving 3 Communication Strategies for Cooperative Search 4 Evaluation and Discussion 5 Separate Description of Communication Strategies 6 ConclusionMade available in DSpace on 2012-09-05T02:23:39Z (GMT). No. of bitstreams: 2 narazaki1.pdf: 12521841 bytes, checksum: 6924ea648ea057390717a4f871e4f23a (MD5) narazaki2.pdf: 12275795 bytes, checksum: 73fc3bb6300f260c11d7ebd5159623c3 (MD5) Previous issue date: 1996-03-19主1-参1システム情報_情報工学（？

Studies on Communication Strategies in Cooperative Search

1 Introduction 2 Communication in Distributed Problem Solving 3 Communication Strategies for Cooperative Search 4 Evaluation and Discussion 5 Separate Description of Communication Strategies 6 Conclusion主1-参1システム情報_情報工学（？