Tools for Analyzing Parallel I/O

TL;DR

This paper reviews recent advances in tools for monitoring and analyzing parallel I/O performance, emphasizing best practices and practical approaches to improve understanding and tuning of complex hardware-software interactions.

Contribution

It provides an overview of monitoring tools, discusses measurement issues, and offers practical methods for translating analysis into actionable improvements.

Findings

Enhanced understanding of I/O performance factors

Identification of measurement challenges

Practical guidelines for I/O tuning

Abstract

Parallel application I/O performance often does not meet user expectations. Additionally, slight access pattern modifications 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 paper, we highlight advances in monitoring tools to help address this problem. We also describe best practices, identify issues in measurement and analysis, and provide practical approaches to translate parallel I/O analysis into actionable outcomes for users, facility operators, and researchers.