Parallel simulation of parallel file systems and I/O programs
Rajive L. Bagrodia, Stephen Docy, Andy Kahn · 1997
Efficient I/O implementations can have a significant impact on the performance of parallel applications. This paper describes the design and implementation of PIOSIM, a parallel simulation library for MPI-IO programs. The simulator can be used to predict the performance of existing MPI-IO programs as a function of architectural characteristics, caching algorithms, and alternative implementations of collective I/O operations. This paper describes the simulator and presents the results of a number of performance studies to evaluate the impact of the preceding factors on a set of MPI-IO benchmarks, including programs from the NAS benchmark suite.