
Worked on ROCm/rocprofiler-systems and ROCm/rocm-systems, delivering features and fixes that improved profiling reliability, build stability, and validation accuracy for GPU workloads. Developed C++ and Python tooling for metrics collection, runtime instrumentation, and automated API testing, integrating CMake for build and test orchestration. Enhanced privacy and data quality by refining metrics defaults and parsing logic, and improved profiling accuracy by excluding internal libraries from instrumentation. Addressed compatibility with FFmpeg and multi-Python environments, and introduced configurable thread limits to prevent segmentation faults. Expanded documentation and validation logic, ensuring robust, maintainable profiling workflows across diverse hardware and software environments.
Month: 2026-03 | Repository: ROCm/rocm-systems. This period delivered two core features that strengthen test coverage, runtime instrumentation, and hardware-aware validation, with clear business and technical value. Key features delivered include enabling dynamic runtime instrumentation tests and enhancing validation accuracy against AMD-SMI metrics.
Month: 2026-03 | Repository: ROCm/rocm-systems. This period delivered two core features that strengthen test coverage, runtime instrumentation, and hardware-aware validation, with clear business and technical value. Key features delivered include enabling dynamic runtime instrumentation tests and enhancing validation accuracy against AMD-SMI metrics.
February 2026 for ROCm/rocm-systems: Delivered a focused bug fix to Rocprofiler instrumentation to enhance profiling accuracy and performance by excluding specific internal libraries from dynamic instrumentation. The change prevents distortion from internal libraries, reduces instrumentation overhead, and improves profiling reliability for developers and performance teams. In addition, refactored internal library handling by renaming _omni_libs to _rocprof_sys_libs to better reflect the scope and updated CHANGELOGs for visibility. Commit 8d7afa53c3a98511e549072d9d9ace3d2efef075 includes the changes and was co-authored by David Galiffi.
February 2026 for ROCm/rocm-systems: Delivered a focused bug fix to Rocprofiler instrumentation to enhance profiling accuracy and performance by excluding specific internal libraries from dynamic instrumentation. The change prevents distortion from internal libraries, reduces instrumentation overhead, and improves profiling reliability for developers and performance teams. In addition, refactored internal library handling by renaming _omni_libs to _rocprof_sys_libs to better reflect the scope and updated CHANGELOGs for visibility. Commit 8d7afa53c3a98511e549072d9d9ace3d2efef075 includes the changes and was co-authored by David Galiffi.
January 2026 monthly work summary for ROCm/rocm-systems focusing on reliability, scalability, and developer experience. Delivered a configurable thread limit for ROCm Systems Profiler to prevent segmentation faults at high thread counts, and reinforced build stability across environments by aligning submodule dependencies to resolve libunwind-related issues. Expanded validation and documentation to ensure long-term maintainability and ease of use for profiling at scale.
January 2026 monthly work summary for ROCm/rocm-systems focusing on reliability, scalability, and developer experience. Delivered a configurable thread limit for ROCm Systems Profiler to prevent segmentation faults at high thread counts, and reinforced build stability across environments by aligning submodule dependencies to resolve libunwind-related issues. Expanded validation and documentation to ensure long-term maintainability and ease of use for profiling at scale.
Performance Review - Monthly Summary for 2025-11 This month delivered a focused set of documentation and compatibility improvements for ROCm-Systems, with an emphasis on cross-version PythonBUILD support and FFmpeg API changes.
Performance Review - Monthly Summary for 2025-11 This month delivered a focused set of documentation and compatibility improvements for ROCm-Systems, with an emphasis on cross-version PythonBUILD support and FFmpeg API changes.
June 2025 monthly summary for ROCm/rocprofiler-systems focusing on structure and validation of Roctx API usage within the build/test system. Delivered a C++ Roctx sample and a test harness, plus associated CMake configurations and a test directory to validate Roctx API usage within the existing CI/build flow. Established a baseline for API call verification and regression testing.
June 2025 monthly summary for ROCm/rocprofiler-systems focusing on structure and validation of Roctx API usage within the build/test system. Delivered a C++ Roctx sample and a test harness, plus associated CMake configurations and a test directory to validate Roctx API usage within the existing CI/build flow. Established a baseline for API call verification and regression testing.
May 2025 monthly summary for ROCm/rocprofiler-systems focused on stabilizing data visibility and initialization flow. Reverted PR-154 RCCL initialization changes to restore correct state management and data visibility, addressing VCN data not appearing in Perfetto traces and preventing potential initialization hangs. These improvements enhance profiling reliability and user experience by ensuring consistent data visibility and robust initialization.
May 2025 monthly summary for ROCm/rocprofiler-systems focused on stabilizing data visibility and initialization flow. Reverted PR-154 RCCL initialization changes to restore correct state management and data visibility, addressing VCN data not appearing in Perfetto traces and preventing potential initialization hangs. These improvements enhance profiling reliability and user experience by ensuring consistent data visibility and robust initialization.
April 2025 — ROCm/rocprofiler-systems: Delivered safety-first metrics collection improvements. Implemented a default 'none' CPU sampling and fixed AMD SMI metrics parsing to prevent default collection and to correctly interpret 'all'/'none' values, enhancing reliability and privacy. These changes improve data quality, reduce noise, and lower risk of exposing sensitive metrics for enterprise workloads. Commits delivering these changes include 807a622b0422a6efc56b50c695413f66b7f2f6b7 and 8d48048bd31358360361fb2680b7deafa30e187f.
April 2025 — ROCm/rocprofiler-systems: Delivered safety-first metrics collection improvements. Implemented a default 'none' CPU sampling and fixed AMD SMI metrics parsing to prevent default collection and to correctly interpret 'all'/'none' values, enhancing reliability and privacy. These changes improve data quality, reduce noise, and lower risk of exposing sensitive metrics for enterprise workloads. Commits delivering these changes include 807a622b0422a6efc56b50c695413f66b7f2f6b7 and 8d48048bd31358360361fb2680b7deafa30e187f.

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