Unraveling Transformer Optimization: A Hessian-Based Explanation for Adam’s Superiority over SGD

Unraveling Transformer Optimization: A Hessian-Based Explanation for Adam’s Superiority over SGD


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AI Solutions

Practical Solutions and Value of Unraveling Transformer Optimization

Challenges in Transformer Training

Understanding the performance gap between Adam and SGD optimizers in training Transformers is crucial for efficiency.

Research Insights

The study delves into the concept of “block heterogeneity” in Transformer models affecting optimizer performance.

Experimental Approach

Utilizing Stochastic Lanczos Quadrature (SLQ) method to analyze Hessian spectra for large-scale neural networks.

Key Findings

Transformer models exhibit block heterogeneity, impacting SGD’s performance compared to Adam.

Implications for Optimization

Insights from the study pave the way for more efficient training algorithms for Transformers and heterogeneous models.

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