The architecture of the Remos system

Remos provides resource information to distributed applications. Its design goals of scalability, flexibility, and portability are achieved through an architecture that allows components to be positioned across the network, each collecting information about its local network. To collect information from different types of networks and from hosts on those networks, Remos provides several collectors that use different technologies, such as SNMP or benchmarking. By matching the appropriate collector to each particular network environment and by providing an architecture for distributing the output of these collectors across all querying environments, Remos collects appropriately detailed information at each site and distributes this information where needed in a scalable manner. Prediction services are integrated at the user-level, allowing history-based data collected across the network to be used to generate the predictions needed by a particular user. Remos has been implemented and tested in a variety of networks and is in use in a number of different environments.

1 Introduction

The Remos system was designed to provide resource information to distributed applications. While designing Re-mos, we considered the needs of many different applications and the capabilities of a range of networking and computing environments. In this paper, we present the architecture of the Remos system and describe how it addresses these problems. The ability of Remos to support resource measurement in a variety of environments and for a variety of applications makes it an appropriate measurement tool for Grid environments.