branch

• amp_debug
• amp_optim_wrapper_api
• amp_rnn_compat
• amp
• amp-rnn-fixes
• apex_no_distributed
• apex_tutorial
• backend_fix
• checkpoint_fix
• checkpointing
• csarofeen-patch-1
• csarofeen-patch-2
• ctypes_util_test
• debug_patching
• disable_test_legacy
• dist_valid
• docs
• efficient_bucketing
• experimental_mlperf
• fix_param_freezing
• fix_pip
• fused_layer_norm_cuda
• gan_example
• gh-pages
• imagenet_fix
• initialize
• learning_rate
• master
• merged_optimizer_wrapper_amp
• multi_tensor_sgd

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