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Multistage interconnection networks are a popular class of interconnection architecture for constructing scalable parallel computers (SPCs). The focus of this paper is on wormhole routed multistage networks supporting turnaround routing. Existing machines characterized by such a system model include the IBM SP-1, TMC CM-5, and Meiko CS-2.Efficient… (More)
Multistage interconnection networks (MINs) are a popular class of switch-based network architectures for constructing scalable parallel computers. Four wormhole MINs built from k ¥ k switches, where k = 2 j for some j, are considered in this paper: traditional MINs (TMINs), dilated MINs (DMINs), MINs with virtual channels (VMINs), and bidirectional MINs… (More)
The nearest goal of ShanghaiGrid is to going to connect all supercomputers in this metropolis together to form a sharing environment for massive storage and grid computing. The first stage projects of ShanghaiGrid comprise four sub-projects, including 1) research on environment, protocols and standards of information gird infrastructure; 2) development of… (More)
The goal of ShanghaiGrid is providing information services to the people. It aims at constructing a metropolitan-area information service infrastructure and establishing an open standard for widespread upper-layer applications from both communities and the government. A typical application named as Traffic Information Grid is discussed in detail.
The Kerberos is applied widely in OS and grid computing environment. The Kerberos system isn’t secure enough for symmetrical encryption. The paper describes a method that transform symmetrical key into asymmetric encryption on the basis of keeping symmetrical key of one side changeless. The algorithm strengthens the security of Kerberos protocol through… (More)
Computational grid nowadays has become a hotspot in high performance computing environments because it can solve larger scale computing problems. The present load balance strategy in computing grid such as the Globus tools is static. This paper mainly focuses on dynamic load balance in the computational grid. We put forward a new model that solves the… (More)
The goal of the ShanghaiGrid is to provide information services to the people. It aims to construct a metropolitan-area information service infrastructure and establish an open standard for widespread upper-layer applications from both communities and the government. This paper introduces the Information Service Grid Toolkit in detail.
Kerberos is a network authentication protocol & is designed to provide strong authentication for client/server applications by using secret-key cryptography. Our research was aimed at enhancing the security of transactions over a network. In this paper, we used Kerberos Encryption Technique for authentication and transaction security in the network.… (More)