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Sepehr Sameni

PROFILE

Sepehr Sameni

During March 2026, Sameni enhanced distributed training for knowledge distillation in the NVIDIA-NeMo/Automodel repository. Leveraging Python and PyTorch, Sameni implemented tensor-parallel and pipeline-parallel support for KDLoss, introducing distributed softmax and T² scaling to improve gradient stability across devices. The work included new methods for building teacher models and calculating losses within pipeline-parallel workflows, ensuring seamless integration with existing training pipelines. Sameni expanded unit tests to validate parity between tensor-parallel and pipeline-parallel paths, addressing edge cases and maintaining robustness. This engineering effort laid a solid foundation for scalable, multi-device knowledge distillation and improved experiment throughput in distributed systems.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

2Total
Bugs
0
Commits
2
Features
1
Lines of code
1,270
Activity Months1

Work History

March 2026

2 Commits • 1 Features

Mar 1, 2026

March 2026: NVIDIA-NeMo/Automodel delivered distributed training enhancements for knowledge distillation, enabling scalable KD across tensor-parallel and pipeline-parallel setups. Implemented TP-aware KDLoss with distributed softmax and T² scaling, and added pipeline parallelism for knowledge distillation to improve training throughput. Introduced new methods and wiring to build teacher models and calculate losses within pipeline-parallel KD workflows, ensuring compatibility with existing training pipelines. Expanded unit tests to validate the new functionality and maintain parity with non-TP paths. Laid groundwork for robust, multi-device KD training and improved experiment throughput across device topologies.

Activity

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Quality Metrics

Correctness90.0%
Maintainability80.0%
Architecture90.0%
Performance80.0%
AI Usage50.0%

Skills & Technologies

Programming Languages

Python

Technical Skills

Deep LearningDistributed ComputingDistributed SystemsMachine LearningModel TrainingPyTorch

Repositories Contributed To

1 repo

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

NVIDIA-NeMo/Automodel

Mar 2026 Mar 2026
1 Month active

Languages Used

Python

Technical Skills

Deep LearningDistributed ComputingDistributed SystemsMachine LearningModel TrainingPyTorch