pytorch

37622db7 - ns for fx - stubs of the three APIs (compare weights, activations, activations with shadow) (#51669)

ns for fx - stubs of the three APIs (compare weights, activations, activations with shadow) (#51669) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/51669 Adds the basic functionality for the three Numeric Suite core APIs to work on FX models: 1. comparing weights 2. comparing activations, with same input fed to both models 3. comparing activations, with nodes of A shadowing nodes of B Note: there are a lot of TODOs in the code, and some/most of the APIs and implementation details may change as we iterate. This is just the first PR. Test Plan: We have unit test coverage for all of the APIs, for now this is with toy models: ``` python test/test_quantization.py TestFXNumericSuiteCoreAPIs ``` Imported from OSS Reviewed By: raghuramank100 Differential Revision: D26403094 fbshipit-source-id: 9752331d4ae0105346d3da309b13c895b593b450