Satoshi Sekiguchi

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The world-wide computing infrastructure on the growing computer network technology is a leading technology to make a variety of information services accessible through the Internet for every users from the high performance computing users through many of personal computing users. The important feature of such services is location transparency; information(More)
GridRPC, which is an RPC mechanism tailored for the Grid, is an attractive programming model for Grid computing. This paper reports on the design and implementation of a GridRPC programming system called Ninf-G. Ninf-G is a reference implementation of the GridRPC API which has been proposed for standardization at the Global Grid Forum. In this paper, we(More)
我々は,ネットワークオーバレイのアルゴリズム研究基盤として,オーバレイ構築ツールキット Overlay Weaver を開発・配布している.これを用いることで,計算機 1 台上で繰り返し動作試験を 行いながら,少ないコード量で structured オーバレイのアルゴリズムを実装できる.また,アルゴ リズムの差し替え,および,計算機 1台上での数千ノード規模のエミュレーションが可能であるため, アルゴリズム間の公正な比較を行うことができる.同時に,こうして実装したアルゴリズムはそのま ま実ネットワーク上で動作するため,アルゴリズム研究の成果が直接アプリケーションに結び付く. 本ツールキットでは,アルゴリズムの実装を容易なものとするために,各アルゴリズムに共通する(More)
Ninf is an ongoing global network-wide computing infrastructure project which allows users to access computational resources including hardware, software and scientific data distributed across a wide area network. Ninf is intended not only to exploit high performance in network parallel computing, but also to provide high quality numerical computation(More)
The Grid Datafarm (Gfarm) architecture is designed for global petascale data-intensive computing. It provides a global parallel filesystem with online petascale storage, scalable I/O bandwidth, and scalable parallel processing, and it can exploit local I/O in a grid of clusters with tens of thousands of nodes. Gfarm parallel I/O APIs and commands provide a(More)
Omni remote procedure call facility, OmniRPC, is a threadsafe grid RPC facility for cluster and global computing environments. The remote libraries are implemented as executable programs in each remote computer, and OmniRPC automatically allocates remote library calls dynamically on appropriate remote computers to facilitate location transparency. We(More)
Grid Datafarm architecture is designed for facilitating reliable file sharing and high-performance distributed and parallel data computing in a Grid across administrative domains by providing a global virtual file system. Gfarm v2 is an attempt to implement a global virtual file system that supports a complete set of standard POSIX APIs, while still(More)
The lack of a small-animal model has hampered the analysis of hepatitis C virus (HCV) pathogenesis. The tupaia (Tupaia belangeri), a tree shrew, has shown susceptibility to HCV infection and has been considered a possible candidate for a small experimental model of HCV infection. However, a longitudinal analysis of HCV-infected tupaias has yet to be(More)
Nin et is a Java-based global computing system that builds on our experiences with the Ninf system which facilitated RPC-based computing of numerical tasks in a wide-area network. The goal of Nin et is to become a new generation of concurrent object-oriented system which harness abundant idle computing powers, and also seamlessly integrate global as well as(More)