Pytorch - Lazy initialization of models (#11471)
* lazy_init_weights
* remove ipdb
* save int
* add necessary code
* remove unnecessary utils
* Update src/transformers/models/t5/modeling_t5.py
* clean
* add tests
* correct
* finish tests
* finish tests
* fix some more tests
* fix xlnet & transfo-xl
* fix more tests
* make sure tests are independent
* fix tests more
* finist tests
* final touches
* Update src/transformers/modeling_utils.py
* Apply suggestions from code review
* Update src/transformers/modeling_utils.py
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>
* Update src/transformers/modeling_utils.py
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>
* clean tests
* give arg positive name
* add more mock weights to xlnet
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>
