Abstract

Even though dynamic software updating (DSU) has addressed a variety of problems on software maintenance or evolution, there are a few outcomes in applying it to parallel applications. This paper explores the applicability of dynamic software updating for parallel applications using Message Passing Interface (MPI) which is a standardized message-passing system. As a validation, the proposed updating system dynamically changes an MPI program for matrix multiplication. During code replacement, the updating system can avoid unacceptable service interruption and keep intermediate computation results. The experimental result demonstrates that dynamic updates allow the MPI application to shorten its computation time and to enhance its operational flexibility.

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