Performance Evaluation of Hypercube Applications: Using a Global Clock and TimeDilation

摘要

Time dilation provides an accurate method for investigating the performance of anapplication using a variety of physical transport speeds. Measuring sources of communication delay in a global domain reveals performance data that are important in the analysis of loosely-coupled machine applications. Together, time dilation and communication delay measurement provide an environment that offers insight for the development and analysis of concurrent algorithms and architectures. Logical and physical transport latencies indicate whether a poorly performing application needs a new algorithm (less logical delay) or a faster interconnection hardware (less physical delay). Other algorithmic and architectural characteristics are revealed with the performance evaluation measurements. The runtime statistics should be available to programmers so that necessary steps can be taken to improve their programs.