DescriptionParallel application I/O performance often fails to meet user expectations. In addition, subtle changes in access patterns may lead to significant changes in performance due to complex interactions between hardware and software. These challenges call for sophisticated tools to capture, analyze, understand, and tune application I/O.
In this BoF, we will highlight recent advances in monitoring and characterization tools to help address this problem. We will also encourage community discussion to compare best practices, identify gaps in measurement and analysis, and find ways to translate parallel I/O analysis into actionable outcomes for users, facility operators, and researchers.