TY - JOUR AU1 - Foster, Ian AU2 - Geisler, Jonathan AU3 - Nickless, Bill AU4 - Smith, Warren AU5 - Tuecke, Steven AB - High‐speed wide‐area networks are expected to enable innovative applications that integrate geographically distributed, high‐performance computing, database, graphics and networking resources. However, there is as yet little understanding of the higher‐level services required to support these applications, or of the techniques required to implement these services in a scalable, secure manner. We report on a large‐scale prototyping effort that has yielded some insights into these issues. Building on the hardware base provided by the I‐WAY, a national‐scale asynchronous transfer mode (ATM) network, we developed an integrated management and application programming system, called I‐Soft. This system was deployed at most of the 17 I‐WAY sites and used by many of the 60 applications demonstrated on the I‐WAY network. In this paper we describe the I‐Soft design and report on lessons learned from application experiments. We focus on four novel concepts that we believe may have relevance to future, similar systems: point of presence machines as a means of simplifying implementation and management; scheduler proxies to integrate local schedulers to computational resource brokers; authentication proxies to provide a uniform authentication environment across multiple administrative domains; and network‐aware parallel programming tools to hide heterogeneity and improve performance in heterogeneous environments. Lessons learned in building I‐Soft have motivated subsequent research and development efforts in the Globus project. © 1998 John Wiley & Sons, Ltd. TI - Software infrastructure for the I‐WAY metacomputing experiment JF - Concurrency and Computation: Practice & Experience DO - 10.1002/(SICI)1096-9128(199806)10:7<567::AID-CPE366>3.0.CO;2-X DA - 1998-06-01 UR - https://www.deepdyve.com/lp/wiley/software-infrastructure-for-the-i-way-metacomputing-experiment-14D7VrbUvq SP - 567 EP - 581 VL - 10 IS - 7 DP - DeepDyve ER -