A distributed system based on web services for computational science simulations

Abstract

In this paper, we describe the ASP system, a testbed based on Web Services for coupled multi-physics simulations. The system is organized as a collection of geographically-distributed software components in which each component provides a Web Service and uses standard SOAP-based Web Service protocols to interact with other components. There are a number of advantages to organizing a system in this way, which we discuss. We have analyzed the performance of our system for a typical application and for a number of problem sizes, and have found that the overhead for using SOAPbased Web Services is small and tends to decrease as the problem size increases. Our results suggest that potential performance bottlenecks identified in the literature may not be major issues in practice, and that a standards-compliant implementation like ours can delivery excellent scalable performance even on coupled problems, provided Web Services are used judiciously.

Wrapper Generator using Java Native Interface

“…Examples of the wrapping approach include a Java interface to MPI [3] and openSSL [5]. The Janet [2] (JAva Native ExTensions) project makes use of Java language extensions and a preprocessing tool to develop Java interfaces to native code by automatically generating JNI code.…”