pytorch

f82b2d4a - [PyTorchEdge] Make _load_parameters() handle flatbuffer inputs (#74580)

[PyTorchEdge] Make _load_parameters() handle flatbuffer inputs (#74580) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/74580 Handle Flatbuffer-serialized parameters. Make `_load_parameters()` detect the input data format and use the correct deserializer to load the parameters. Also, rename `BytecodeDeserializer` to `IValueUnpickler` to make it clear that it unpickles an `IValue` and doesn't have anything to do with bytecode. ghstack-source-id: 152487890 Test Plan: New unit test shows a successful round trip from _save_parameters() to _load_parameters() using flatbuffers. ``` $ buck test //xplat/caffe2:test_lite_trainer //xplat/caffe2:test_lite_trainer_pickle_and_flatbuffer Building: finished in 0.5 sec (100%) 346/346 jobs, 0/346 updated Total time: 0.6 sec Testing: finished in 0.5 sec (26 PASS/0 FAIL) BUILD SUCCEEDED RESULTS FOR //xplat/caffe2:test_lite_trainer //xplat/caffe2:test_lite_trainer_pickle_and_flatbuffer PASS <100ms 13 Passed 0 Skipped 0 Failed //xplat/caffe2:test_lite_trainer PASS <100ms 13 Passed 0 Skipped 0 Failed //xplat/caffe2:test_lite_trainer_pickle_and_flatbuffer TESTS PASSED ``` Reviewed By: qihqi Differential Revision: D34488913 fbshipit-source-id: 8d2c0b895699f3b336115d33bf96d49cbf9245d2 (cherry picked from commit 319345deff260826197f8cdf5ac03071b412c72f)