Partial orthogonalization from power iteration accelerates zeroth-order Muon by 1.5x-4x on LLM fine-tuning tasks while maintaining competitive accuracy.
Spectra: Rethinking optimizers for llms under spectral anisotropy.arXiv preprint arXiv:2602.11185
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Accelerating Zeroth-Order Spectral Optimization with Partial Orthogonalization from Power Iteration
Partial orthogonalization from power iteration accelerates zeroth-order Muon by 1.5x-4x on LLM fine-tuning tasks while maintaining competitive accuracy.