save unnecessary matmul #30
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Signed-off-by: Hao Wu <skyw@nvidia.com>
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/ok to test e3bf176 |
| # (i.e. the approximated eigenvectors diagonalize the kronecker factor) | ||
| approx_eigenvalue_matrix = eigenbasis.T @ kronecker_factor @ eigenbasis | ||
| # Update eigenbasis when necessary. Update is skipped only when adaptive update criteria is met. | ||
| if _adaptive_criteria_met( |
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_adaptive_criteria_met also extracts the diagonal and computes diagonal norm, in addition to matrix frobenius norm. So I think this will need the full approx_eigenvalue_matrix diagonal for diagonal norm and the kronecker factor for frobenius norm, separately.
Signed-off-by: Hao Wu <skyw@nvidia.com>
Signed-off-by: Hao Wu <skyw@nvidia.com>
Signed-off-by: Hao Wu <skyw@nvidia.com>
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/ok to test 7265ff4 |
mkhona-nvidia
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Oct 3, 2025
* save unnecessary matmul Signed-off-by: Hao Wu <skyw@nvidia.com> * simplify criteria logic Signed-off-by: Hao Wu <skyw@nvidia.com> * remove max precondition dim Signed-off-by: Hao Wu <skyw@nvidia.com> Signed-off-by: mikail <mkhona@nvidia.com>
mkhona-nvidia
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Oct 3, 2025
* save unnecessary matmul Signed-off-by: Hao Wu <skyw@nvidia.com> * simplify criteria logic Signed-off-by: Hao Wu <skyw@nvidia.com> * remove max precondition dim Signed-off-by: Hao Wu <skyw@nvidia.com> Signed-off-by: mikail <mkhona@nvidia.com>
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Only diagonal of approx_eigenvalue_matrix is needed for _orthogonal_iteration, added logic to skip the last matrix multiply.
Frobenius norm is unitarily invariant, that is for any orthogonal matrix Q and square matrix A ,$||Q^T A Q||_F = ||A||_F$ . So we can calculate norm on kronecker_factor instead of approx_eigenvalue_matrix.