
Xuefei Jiang developed and optimized GPU computing features across major machine learning repositories, including tensorflow/tensorflow and openxla/xla. He engineered dynamic device attribute querying and refined ROCm device detection, improving hardware compatibility and performance planning. Leveraging C++ and CUDA, he implemented ROCm-accelerated scaled dot product support and enhanced autotuning for matrix multiplication, enabling efficient large-scale operations on AMD GPUs. Jiang also stabilized CI pipelines by refining test suites and memory management, reducing flakiness and improving feedback cycles. His work demonstrated depth in low-level programming, system integration, and performance optimization, delivering robust, scalable solutions for ROCm-enabled machine learning workflows.
April 2026 (2026-04) performance-focused month for openxla/xla. Key accomplishment: test suite performance optimization by removing the 'long' timeout flag in ROCm-enabled tests after hipblaslt update, leading to faster test execution and more reliable CI. This work reduced overall CI time and improved feedback cycles, enabling faster iteration on GPU backends.
April 2026 (2026-04) performance-focused month for openxla/xla. Key accomplishment: test suite performance optimization by removing the 'long' timeout flag in ROCm-enabled tests after hipblaslt update, leading to faster test execution and more reliable CI. This work reduced overall CI time and improved feedback cycles, enabling faster iteration on GPU backends.
March 2026: Delivered ROCm-accelerated scaled dot product support via hipBLASLt for two major backends (Intel-tensorflow/tensorflow and openxla/xla). Implemented end-to-end path from fusion to a custom hipBLASLt matmul call, enhanced autotuner to recognize kScaledDot, and extended GEMM configuration with ScaleMode to manage scale attributes across data types. Built infrastructure for custom calls and thunk emission, and added comprehensive tests. This work unlocks scalable, efficient matrix multiplications on ROCm hardware and lays the groundwork for FP8-scaled dot performance improvements, delivering tangible performance and usability gains for ML workloads.
March 2026: Delivered ROCm-accelerated scaled dot product support via hipBLASLt for two major backends (Intel-tensorflow/tensorflow and openxla/xla). Implemented end-to-end path from fusion to a custom hipBLASLt matmul call, enhanced autotuner to recognize kScaledDot, and extended GEMM configuration with ScaleMode to manage scale attributes across data types. Built infrastructure for custom calls and thunk emission, and added comprehensive tests. This work unlocks scalable, efficient matrix multiplications on ROCm hardware and lays the groundwork for FP8-scaled dot performance improvements, delivering tangible performance and usability gains for ML workloads.
December 2025 (jax-ml/jax): Delivered ROCm platform support for the scaled matrix multiplication lowering path, enabling ROCm-based acceleration for the scaled dot product workflow. Implemented ROCm registration in the block_scaled_dot lowering path and completed accompanying updates to the scaling workflow, laying groundwork for AMD GPU performance improvements and broader hardware parity.
December 2025 (jax-ml/jax): Delivered ROCm platform support for the scaled matrix multiplication lowering path, enabling ROCm-based acceleration for the scaled dot product workflow. Implemented ROCm registration in the block_scaled_dot lowering path and completed accompanying updates to the scaling workflow, laying groundwork for AMD GPU performance improvements and broader hardware parity.
Month 2025-10: Delivered dynamic ROCm device attribute querying in the TensorFlow integration to replace hardcoded device attributes with runtime queries, improving accuracy of device descriptions and configurations across ROCm platforms. This work (PR #31386, commit b91355e4fd4288870a7a0cb775a5375ccca3a040) fixes hardcoded properties for ROCm and enhances hardware compatibility and scalability within TensorFlow.
Month 2025-10: Delivered dynamic ROCm device attribute querying in the TensorFlow integration to replace hardcoded device attributes with runtime queries, improving accuracy of device descriptions and configurations across ROCm platforms. This work (PR #31386, commit b91355e4fd4288870a7a0cb775a5375ccca3a040) fixes hardcoded properties for ROCm and enhances hardware compatibility and scalability within TensorFlow.
September 2025 monthly summary for tensorflow/tensorflow focused on ROCm platform improvements. Deliveries centered on memory reporting reliability and multi-GPU scalability for ROCm, with upstream contributions and targeted testing to support robust ROCm deployments.
September 2025 monthly summary for tensorflow/tensorflow focused on ROCm platform improvements. Deliveries centered on memory reporting reliability and multi-GPU scalability for ROCm, with upstream contributions and targeted testing to support robust ROCm deployments.
August 2025 monthly summary focusing on stabilizing the TensorFlow test suite for single-GPU workflows by excluding multi-GPU tagged tests, delivering faster, more reliable CI feedback and reducing flaky test outcomes. This work improves CI efficiency, resource utilization, and supports more stable ROCm-enabled releases.
August 2025 monthly summary focusing on stabilizing the TensorFlow test suite for single-GPU workflows by excluding multi-GPU tagged tests, delivering faster, more reliable CI feedback and reducing flaky test outcomes. This work improves CI efficiency, resource utilization, and supports more stable ROCm-enabled releases.
Month: 2025-07 | TensorFlow (tensorflow/tensorflow) Scope: ROCm device description and feature detection improvements to improve accuracy and maintainability of ROCm GPU support, enabling safer performance optimization for ML workloads on ROCm devices. Key accomplishments: - Separated ROCm gfx9_mi300 and gfx9_mi350 checks to improve accuracy of device feature detection. - Refined the ROCm device description logic for clarity and maintainability, reducing future regression risk. - Implemented and merged PR #28936 (commit 6ed8d8853e2b121288633058d7f0e681247f756b): clean device description for rocm, delivering a precise and reliable feature map. - Enhanced reliability of device capability mapping, enabling more consistent performance optimization decisions for TensorFlow on ROCm hardware. Overall impact: - Improved reliability and performance planning for ROCm-based ML workloads; cleaner codebase supports faster onboarding and future enhancements. Technologies/skills demonstrated: - ROCm/HIP integration, GPU feature detection logic, code refactor for maintainability, PR-driven collaboration, and Git-based change management.
Month: 2025-07 | TensorFlow (tensorflow/tensorflow) Scope: ROCm device description and feature detection improvements to improve accuracy and maintainability of ROCm GPU support, enabling safer performance optimization for ML workloads on ROCm devices. Key accomplishments: - Separated ROCm gfx9_mi300 and gfx9_mi350 checks to improve accuracy of device feature detection. - Refined the ROCm device description logic for clarity and maintainability, reducing future regression risk. - Implemented and merged PR #28936 (commit 6ed8d8853e2b121288633058d7f0e681247f756b): clean device description for rocm, delivering a precise and reliable feature map. - Enhanced reliability of device capability mapping, enabling more consistent performance optimization decisions for TensorFlow on ROCm hardware. Overall impact: - Improved reliability and performance planning for ROCm-based ML workloads; cleaner codebase supports faster onboarding and future enhancements. Technologies/skills demonstrated: - ROCm/HIP integration, GPU feature detection logic, code refactor for maintainability, PR-driven collaboration, and Git-based change management.
May 2025 - TensorFlow (tensorflow/tensorflow): Focused on ROCm HIPBLAS LT performance and memory optimization. Delivered GFX942 workspace size optimization to improve performance and memory utilization for gfx942 GPUs. The change, implemented in commit dacaac380a338060d3bc95f5f8d9cf1a7180474e and merged as PR #26762, reduces workspace allocation overhead and stabilizes throughput for HIPBLAS LT workloads. No major bugs observed related to this work; the effort centers on performance uplift and resource efficiency aligning with ML workloads on ROCm-enabled GPUs. Technologies demonstrated include HIP/ROCm, hipblaslt, GPU memory management, and PR-driven development.
May 2025 - TensorFlow (tensorflow/tensorflow): Focused on ROCm HIPBLAS LT performance and memory optimization. Delivered GFX942 workspace size optimization to improve performance and memory utilization for gfx942 GPUs. The change, implemented in commit dacaac380a338060d3bc95f5f8d9cf1a7180474e and merged as PR #26762, reduces workspace allocation overhead and stabilizes throughput for HIPBLAS LT workloads. No major bugs observed related to this work; the effort centers on performance uplift and resource efficiency aligning with ML workloads on ROCm-enabled GPUs. Technologies demonstrated include HIP/ROCm, hipblaslt, GPU memory management, and PR-driven development.
April 2025 Performance Summary: Delivered FP8 readiness and stability improvements across ROCm/xla and ROCm/tensorflow-upstream, with a focus on business value through enhanced throughput, reliable CI, and smoother development cycles.
April 2025 Performance Summary: Delivered FP8 readiness and stability improvements across ROCm/xla and ROCm/tensorflow-upstream, with a focus on business value through enhanced throughput, reliable CI, and smoother development cycles.
January 2025 monthly summary for ROCm/xla focused on expanding hardware support for AMD GPUs and ensuring robust integration with the XLA compiler. The primary deliverable this month was enabling support for gfx1200 and gfx1201 architectures within ROCm's XLA path, including related hipblaslt and FP8 support, and ensuring proper identification and utilization of these new GPUs.
January 2025 monthly summary for ROCm/xla focused on expanding hardware support for AMD GPUs and ensuring robust integration with the XLA compiler. The primary deliverable this month was enabling support for gfx1200 and gfx1201 architectures within ROCm's XLA path, including related hipblaslt and FP8 support, and ensuring proper identification and utilization of these new GPUs.

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