EXCEEDS logo
Exceeds
ywang103-amd

PROFILE

Ywang103-amd

Yunfei Wang contributed to ROCm/rocprofiler-compute and ROCm/rocm-systems by developing and refining profiling and analysis tools for GPU workloads. Over ten months, Yunfei built features such as spatial multiplexing analysis, cross-version metric reliability, and multi-kernel PC sampling, using Python, C++, and HIP. He improved test infrastructure, enhanced error handling, and modernized build systems with CMake, focusing on stability and compatibility across hardware generations. His work included refactoring YAML configurations for SDK alignment, strengthening CI/CD pipelines, and ensuring robust subprocess management. These efforts resulted in more accurate performance analysis, reliable profiling workflows, and maintainable codebases for ROCm developers.

Overall Statistics

Feature vs Bugs

53%Features

Repository Contributions

33Total
Bugs
9
Commits
33
Features
10
Lines of code
9,436
Activity Months10

Your Network

1940 people

Work History

December 2025

1 Commits

Dec 1, 2025

December 2025 monthly summary for ROCm/rocm-systems focused on stabilizing ROC Profiler attach/detach flow by implementing robust error handling and guaranteed subprocess cleanup, reducing test flakiness and improving reliability of profiling workflows. Delivered a targeted fix and cleanup improvements that enhance stability for developers and CI pipelines.

November 2025

1 Commits

Nov 1, 2025

November 2025 monthly summary for ROCm/rocm-systems focused on stabilization of PC Sampling JSON processing by rolling back to the previous stable state. This work preserves data integrity, maintains a stable build configuration, and reduces regression risk in critical sampling pipelines.

October 2025

4 Commits • 1 Features

Oct 1, 2025

October 2025 (ROCm/rocm-systems): Delivered multi-kernel PC sampling enhancements, added kernel-trace CSV output, and updated documentation; removed json output to stabilize rocprofv3; fixed crashes in metric generator and improved configuration/templates for profiling reliability. These changes improve profiling accuracy, reduce test fragility, and strengthen toolchain maintainability.

September 2025

5 Commits • 2 Features

Sep 1, 2025

In September 2025, ROCm/rocm-systems delivered substantive enhancements to profiling and visualization that improve both readability and performance analysis for long-running workloads. The work focused on memory-chart presentation and matrix-multiplication profiling, with a strong emphasis on test infrastructure and reliability. These changes lay groundwork for more precise optimization of memory and matrix-heavy workloads across CLI, TUI, and GUI interfaces.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025 — Delivered PC Sampling Unit Tests and Test Infrastructure for ROCm/rocm-systems, focusing on rocprofiler-compute test coverage. Implemented tests for PC sampling including host_trap and stochastic methods, and updated build tooling (CMakeLists.txt and pyproject.toml) to enable running these tests. This accelerates validation, improves reliability of profiling workflows, and reduces production risk.

June 2025

3 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for ROCm/rocprofiler-compute focusing on delivering robust, SDK-aligned counter analysis features and improving test reliability. Key refactor updated the counter accumulation YAML to a structure compatible with the rocprofiler-sdk, accompanied by utilities for counter definition management and general code quality improvements. A robustness fix was implemented for memory chart plotting to ensure plotting only occurs when required data is present, addressing test flakiness related to column presence and --cols options. These changes enhance configurability, reliability, and maintainability, enabling more accurate and scalable performance analysis across ROCm workloads.

April 2025

2 Commits • 1 Features

Apr 1, 2025

April 2025 monthly work summary for ROCm/rocprofiler-compute focused on standardizing and accelerating profiling with rocprofv3.

March 2025

10 Commits • 2 Features

Mar 1, 2025

March 2025 performance summary for ROCm/rocprofiler-compute: Delivered cross-version reliable metrics, stabilized multi-node outputs, and modernized tooling. Key features and bug fixes improved metric accuracy, output organization, and tooling compatibility, driving measurable business value for performance analysis across ROCm versions.

February 2025

4 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for ROCm/rocprofiler-compute focused on delivering accurate, scalable profiling analysis and improving stability and data handling. Key features and bug fixes delivered in this period underpin more reliable performance insights and faster debugging for multiplexed workloads.

January 2025

2 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for ROCm/rocprofiler-compute. Focused on stability and expanded profiling coverage. Delivered a Roofline Inclusion Test Bug Fix to prevent crashes on MI100 and enabled rocprofv3 profiling for older SoCs by updating compatibility lists and removing gfx906 from supported hardware. These changes enhance reliability, broaden hardware support, and unlock more accurate performance analysis for a wider range of ROCm-enabled GPUs.

Activity

Loading activity data...

Quality Metrics

Correctness84.0%
Maintainability85.4%
Architecture78.8%
Performance73.6%
AI Usage22.4%

Skills & Technologies

Programming Languages

C++CMakeHIPMarkdownPythonShellYAMLrst

Technical Skills

Bug FixBuild SystemsC++C++ developmentCI/CDCMakeCode FormattingCode RefactoringCommand Line InterfaceCommand-Line InterfaceCommand-line InterfaceData ParsingData ProcessingData SerializationData Visualization

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

ROCm/rocprofiler-compute

Jan 2025 Jun 2025
5 Months active

Languages Used

PythonShellYAML

Technical Skills

DebuggingPerformance Profiling ToolsSystem Software DevelopmentTestingBug FixCommand-line Interface

ROCm/rocm-systems

Aug 2025 Dec 2025
5 Months active

Languages Used

CMakeHIPPythonC++MarkdownYAMLrst

Technical Skills

CI/CDPerformance AnalysisTestingBuild SystemsC++Code Refactoring