Evaluation and Test for Scalability of Numerical Parallel Computation

In this paper, the existing problems of the current scalability models are analyzed, and aiming at the requirements of the practical evaluations and tests, a practical scalability metric based on iso-average-computation-load is proposed to provide a quantitative measurement of the scalability. In this metric, the definitions of scalable speedup and scalability are different from the current metrics. By using this metric, a practical method can be obtained to test scalable speedup and scalability, and combined with curve fitting or parallel computing time model, the scalabilities of parallel systems can be predicted.