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Qidong Su

PROFILE

Qidong Su

Worked on stabilizing long-sequence processing in the NVIDIA-NeMo/RL repository, focusing on DeepScaler’s memory management and numerical stability. Addressed critical Out-Of-Memory issues for sequence lengths up to 16,000 and 24,000 tokens by optimizing memory usage, including explicit deletion of intermediate tensors after use. Improved numerical stability and memory efficiency by casting logits to float32 before log-probability calculations. These changes enhanced production reliability for long-context inference and laid the foundation for future scalability improvements. The work leveraged deep learning and model optimization skills, utilizing Python and YAML to deliver measurable technical improvements and support more robust production workloads.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
20
Activity Months1

Work History

August 2025

1 Commits

Aug 1, 2025

Month 2025-08 summary focusing on delivering measurable business value and technical improvements for NVIDIA-NeMo/RL. Key focus was stabilizing long-sequence processing in DeepScaler by addressing memory management and numerical stability issues to reduce OOM risks and enable more robust production workloads.

Activity

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Quality Metrics

Correctness80.0%
Maintainability80.0%
Architecture60.0%
Performance80.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

PythonYAML

Technical Skills

Deep LearningLarge Language ModelsMemory ManagementModel Optimization

Repositories Contributed To

1 repo

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

NVIDIA-NeMo/RL

Aug 2025 Aug 2025
1 Month active

Languages Used

PythonYAML

Technical Skills

Deep LearningLarge Language ModelsMemory ManagementModel Optimization