Refactor: eliminate _compute_outer_product_list via _transform_grad_for_outer_product hook#262
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Refactor: eliminate _compute_outer_product_list via _transform_grad_for_outer_product hook#262runame wants to merge 2 commits into
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…rsUnwrapped base class Consolidate duplicated eigendecomposition logic from EigendecomposedShampooKroneckerFactorsUnwrapped and EigenvalueCorrectedShampooKroneckerFactorsUnwrapped into a shared base class. The base class provides _perform_eigendecomposition and _amortized_computation, with subclass behavior controlled via hasattr checks on field presence. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…or_outer_product hook Inline the outer product loop into BaseShampooPreconditionerList._update_factor_matrices and introduce _transform_grad_for_outer_product as the single extension point. The base returns grad unchanged; KL-Shampoo subclasses override it to precondition the gradient. This eliminates _compute_outer_product_list from all three classes that defined it. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
_compute_outer_product_listoverride pattern with a_transform_grad_for_outer_producthook inClassicShampooPreconditionerList.Stack
This PR is part of a stack adding per-factor eigenvalue correction to Distributed Shampoo:
_transform_grad_for_outer_producthook (KL refactor)Test plan
distributed_shampoo/tests/,distributed_shampoo/preconditioner/tests/)make type-check)Generated with Claude Code