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arXiv · 2510.19675

Study of Training Dynamics for Memory-Constrained Fine-Tuning

Aël Quélennec·Nour Hezbri·Pavlo Mozharovskyi·Van-Tam Nguyen·Enzo Tartaglione
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Abstract

Memory-efficient training of deep neural networks has become increasingly important as models grow larger while deployment environments impose strict resource constraints. We propose TraDy, a novel transfer learning scheme leveraging two key insights: layer importance for updates is architecture-dependent and determinable a priori, while dynamic stochastic channel selection provides superior gradient approximation compared to static approaches. We introduce a dynamic channel selection approach that stochastically resamples channels between epochs within preselected layers. Extensive experiments demonstrate TraDy achieves state-of-the-art performance across various downstream tasks and architectures while maintaining strict memory constraints, achieving up to 99% activation sparsity, 95% weight derivative sparsity, and 97% reduction in FLOPs for weight derivative computation.

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Aël Quélennec, Nour Hezbri, Pavlo Mozharovskyi, Van-Tam Nguyen, Enzo Tartaglione. 2026-02-20. Study of Training Dynamics for Memory-Constrained Fine-Tuning. https://arxiv.org/abs/2510.19675

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