About This Document

This document provides Ascend developers with systematic performance tuning methods and toolchain guidelines. It implements closed-loop management of the entire process through performance issue identification, location and analysis, tool usage, and typical case studies.

**Table 1** Closed-loop management of performance issues
Phase	Objective
Overview	Develop an overall understanding of the performance issues on the Ascend platform.
Performance Troubleshooting Process	Establish a systematic process for performance issues on the Ascend platform.
How to Use Performance Tools?	Master the toolchain for profile data collection and analysis.
Solutions for the Top N Performance Issues	Propose actionable optimization solutions for common performance bottlenecks.