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Mateusz Krzemieniewski

PROFILE

Mateusz Krzemieniewski

Worked on performance optimization and model stability for deep learning frameworks, focusing on HabanaAI/optimum-habana-fork and vllm-project/vllm-gaudi repositories. Delivered a Stable Diffusion XL measurement data update, refreshing .npz datasets with tuned quantization parameters and performance metrics to improve benchmarking accuracy on Habana hardware. In vllm-gaudi, implemented robust tensor parallelism partitioning and enhanced dequantization logic for the GPT-oss model, addressing mis-sizing issues and ensuring compatibility with evolving vLLM checkpoints. Leveraged Python, PyTorch, and quantization techniques to enable reproducible evaluation workflows and reliable large-model deployment, demonstrating a methodical approach to model optimization and hardware-aligned performance engineering.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

2Total
Bugs
0
Commits
2
Features
2
Lines of code
69,883
Activity Months2

Work History

May 2026

1 Commits • 1 Features

May 1, 2026

May 2026: Delivered stability and compatibility enhancements for the GPT-oss model in vllm-gaudi. Implemented robust tensor parallelism partitioning, improved dequantization for intermediate dimensions, and standardized quant_method naming to align with newer vLLM versions. These changes reduce mis-sizing, enhance reliability for large models, and ease upgrades.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 performance summary for HabanaAI/optimum-habana-fork. Key feature delivered: Stable Diffusion XL measurement data update for Habana performance evaluation. The measurement dataset (.npz) was refreshed with adjusted quantization parameters and performance metrics to enable accurate evaluation and optimization on Habana hardware. Major bugs fixed: none reported this month. Overall impact and accomplishments: improved benchmarking accuracy and reproducibility, enabling more reliable optimization cycles on Habana platform and alignment with testing workflows. Technologies/skills demonstrated: Python data handling with .npz files, quantization parameter tuning, performance metrics engineering, and Git-based traceability for reproducible performance evaluation.

Activity

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Quality Metrics

Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage30.0%

Skills & Technologies

Programming Languages

BinaryPython

Technical Skills

Deep LearningDockerMachine LearningModel OptimizationPyTorchQuantizationTensorFlow

Repositories Contributed To

2 repos

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

HabanaAI/optimum-habana-fork

Feb 2025 Feb 2025
1 Month active

Languages Used

Binary

Technical Skills

Machine LearningModel OptimizationQuantization

vllm-project/vllm-gaudi

May 2026 May 2026
1 Month active

Languages Used

Python

Technical Skills

Deep LearningDockerMachine LearningPyTorchTensorFlow