feat: RGS for wanda++ #2537
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feat: RGS for wanda++ #2537
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/ao/2537
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- Since WandaPlusPlusSparsifier is still in prototype stage, we move it to the prototype directory.
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- Since WandaPlusPlusSparsifier is still in prototype stage, we move it to the prototype directory. update annotations and remove rebudnat error handler update indexing logics for Wanda++ using Wanda - Since both paper uses same index logics (extraction, sorting, and updating), Wanda++ can use the same logic as Wanda. - For using it, `_apply_sparsity_pattern` is moduled to be used in both Wanda and Wanda++. remove hardware-specific test case - This test case is not fully implemented in `wanda_pp.py`
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This update introduces one of the main concepts of Wanda++ (arXiv), Regional Gradient Score (RGS).
Algorithm : RGS
RGS uses block-level gradients instead of magnitude (Wanda):
G_ij: Regional gradient||X_j||_2: Activation norm (same in Wanda)|W_ij|: Weight magnitude (same in Wanda)α: Regional gradient weight (default: 100 from paper)Algorithm : Wanda++