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Andrei Ivanov

PROFILE

Andrei Ivanov

Worked on GPU backend infrastructure and autotuning for openxla/xla, Intel-tensorflow/xla, and ROCm/tensorflow-upstream, focusing on test reliability, performance profiling, and cross-vendor compatibility. Developed deterministic autotuner selection, expanded HLO op profiles for new GPU architectures, and unified profiling keys to streamline optimization. Addressed device-specific issues by implementing targeted workarounds and enhancing test coverage, including robust unit testing and CI stabilization. Leveraged C++, CUDA, and Python to improve autotuning, compiler configuration, and validation workflows. Collaborated across repositories to align GPU performance tuning and ensure stable deployment on platforms like Thor and Jetson, supporting both production and open-source environments.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

15Total
Bugs
4
Commits
15
Features
4
Lines of code
1,805
Activity Months5

Work History

May 2026

3 Commits • 1 Features

May 1, 2026

May 2026: Delivered deterministic GPU autotuning and profiling enhancements, added SM103 HLO op profiles for B300/GB300, and unified SM100 profiling keys, accompanied by expanded unit tests. Business value: more reliable performance tuning, improved GPU cost-model accuracy across devices, and streamlined profiling data for faster optimization cycles. Technologies demonstrated: GPU backends, HLO op profiles, profile naming conventions, and test-driven development with upstream PR integrations.

March 2026

5 Commits • 1 Features

Mar 1, 2026

March 2026 highlights: Implemented robust OSS/GPU test infra for Intel-tensorflow/xla, introduced HasTcgen05() for tensor-memory capability detection, and stabilized GPU-related tests and AOT paths to improve CI reliability and public-OSS validation. Delivered targeted fixes to test suite, dependencies, and guards to prevent spurious failures while preserving coverage. These efforts reduce debug time, improve build stability, and enable safer deployment of GPU-accelerated features and Triton integration.

February 2026

1 Commits

Feb 1, 2026

February 2026 — Intel-tensorflow/xla: Implemented a targeted workaround to preserve Thor device functionality in the GPU backend. When the CUDA driver reports mem_clock_khz and mem_bus_width_bits as zero, the code now hardcodes safe defaults to ensure continued operation until the driver fix is available. This prevents training/inference interruptions on Thor (CC 11.0) devices and maintains throughput for mixed GPU workloads. The change was integrated via upstream PR 36970 from openxla/xla and merged through a Copybara-imported patch (commit 1ec3edeb5fbafa0bd4d1a1c7d9eb2e39205949cc).

January 2026

4 Commits • 2 Features

Jan 1, 2026

January 2026: Focused on advancing GPU autotuning capabilities and cross-repo alignment for XLA GPU backends in ROCm/tensorflow-upstream and Intel-tensorflow/xla. Delivered extended autotuning configuration coverage, introduced an experimental Triton-based fusion autotuning flag, and prepared pathways for broader performance evaluation. No major bug fixes reported this month; work centered on capabilities expansion, code quality, and facilitating data-driven performance gains across platforms.

November 2025

2 Commits

Nov 1, 2025

Month 2025-11: Focused on strengthening GPU autotuner test coverage and reliability for XLA GPU backends across Intel-tensorflow/xla and ROCm/tensorflow-upstream. Implemented Blackwell_11 (sm_110) support in autotuner tests for Thor GPUs, and incorporated upstream fixes to stabilize cublas fallback paths. This work reduces test flakiness, accelerates validation cycles, and enhances cross-vendor GPU compatibility, increasing confidence for production deployments on Thor/Jetson platforms.

Activity

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Quality Metrics

Correctness94.6%
Maintainability82.6%
Architecture88.0%
Performance85.4%
AI Usage24.0%

Skills & Technologies

Programming Languages

C++Python

Technical Skills

C++C++ developmentCUDACompiler designContinuous IntegrationGPU ProgrammingGPU programmingPerformance optimizationPerformance profilingPythonSoftware TestingTestingTesting and validationUnit TestingUnit testing

Repositories Contributed To

3 repos

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

Intel-tensorflow/xla

Nov 2025 Mar 2026
4 Months active

Languages Used

C++Python

Technical Skills

C++ developmentGPU programmingtestingCompiler designPerformance optimizationC++

ROCm/tensorflow-upstream

Nov 2025 Jan 2026
2 Months active

Languages Used

C++

Technical Skills

C++ developmentGPU programmingTestingCompiler designPerformance optimization

openxla/xla

May 2026 May 2026
1 Month active

Languages Used

C++

Technical Skills

C++ developmentGPU programmingPerformance optimizationPerformance profilingUnit testing