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* pass `self.mask_additive`

* clang-format

* removing THCState

* Add fused mixed precision lamb optimizer.

* Fix device usage in constructor.

* Fix sending param_group tensor state to device.

* Remove unneeded device set.

IFU-2021-10-15 (+ remove redundant defines + C10_CUDA_CHECK)

Changes include
- THC headers removal
- TH macros replacement
- fix some typo in comment
 Conflicts:
	apex/contrib/csrc/multihead_attn/additive_masked_softmax_dropout_cuda.cu
	apex/contrib/csrc/multihead_attn/encdec_multihead_attn_cuda.cu
	apex/contrib/csrc/multihead_attn/encdec_multihead_attn_norm_add_cuda.cu
	apex/contrib/csrc/multihead_attn/masked_softmax_dropout_cuda.cu
	apex/contrib/csrc/multihead_attn/self_multihead_attn_bias_additive_mask_cuda.cu
	apex/contrib/csrc/multihead_attn/self_multihead_attn_bias_cuda.cu
	apex/contrib/csrc/multihead_attn/self_multihead_attn_cuda.cu
	apex/contrib/csrc/multihead_attn/self_multihead_attn_norm_add_cuda.cu
	apex/contrib/csrc/multihead_attn/strided_batched_gemm.h

* Use --cuda_ext flag to build all supported extensions

* Don't remove --cuda_ext since it'll be needed to build other extensions

* Need to clear all cmdline args so setup.py doesn't complain

Add more unit tests for both distributed and extensions

Change python3.6 to python

* minimal bert pipeline parallel test

* fix global and cleanup

* use get_forward_backward_func

* cleanup and fix some tests

Co-authored-by: Sangkug Lym <slym@nvidia.com>
Co-authored-by: Sangkug Lym <slym@nvidia.com>

* init logging use

* fix

* clean up

* fp32 p2p comm

* init

* Dynamic global batch size with `MegatronPretrainingSampler`

I couldn't make this script work with `MegatronPretrainingRandomSampler` because the random sampler seems to have some requirement for
global batch size, total number of samples, local minibatch size, etc. which I'm not familiar with for now

* revive original pipeline parallel test

* update MULTIGPU_TEST: add dynamic batchsize test

* run MegatronPretrainingRandomSampler

* fix comment

* fix

* update

* cosmetic

* add note

* Apply 2 suggestion(s) to 2 file(s)

* change following https://github.com/NVIDIA/apex/pull/1210

* fix

Enable multihead atten

Co-authored-by: Jeff Daily <jeff.daily@amd.com>

Fix rocblas_gemmex namespace

Fix namespace

Clean up comments

Enable HIP floa to hald conversion

Fix some spacing

* Persistent LayerNorm: Multi-CTA Rewrite

* autocast support
Co-authored-by: Young-Jun Ko <youngjun.ko@gmail.com>