An Open64-Based Framework Tool for Analyzing Parallel Applications

We propose an infrastructure based on the Open64 compiler for analyzing, modeling and optimizing MPI and/or OpenMP applications. The framework consists of four main parts: a compiler, microbenchmarks, a user interface and a runtime library. The compiler generates the application signature containing a portable representation of the application structure that may influence program performance. Microbenchmarks are needed to capture the system profile, including MPI latency and OpenMP overhead. The user interface, based on Eclipse, is used to drive code transformation, such as OpenMP code generation. And lastly, our runtime library can be used to balance the MPI workload, thus reducing load imbalance. In this paper we show that our framework can analyze and model MPI and/or OpenMP applications. We also demonstrate that it can be used for program understanding of large scale complex applications.