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Admin merging for pure-doc PR that does not trigger build.

Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* fix log(0) & 1/log(1) bugs

* simplify
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>
Co-authored-by: Reza Yazdani <44502768+RezaYazdaniAminabadi@users.noreply.github.com>
Co-authored-by: Cheng Li <pistasable@gmail.com>

* Control ZeRO wall clock timers

* Disable more ZeRO3 debug prints
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* add optimizers and schedules to rtd

* update ds website and fix links

* add optimizers and schedules to rtd

* update ds website and fix links

* add flops profiler to rtd

* fix
Co-authored-by: Shaden Smith <Shaden.Smith@microsoft.com>

Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* Squash stage3 v1 (#146)
Co-authored-by: Samyam <samyamr@microsoft.com>
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>
Co-authored-by: Samyam Rajbhandari <samyamr@microsoft.com>
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
Co-authored-by: Shaden Smith <Shaden.Smith@microsoft.com>
Co-authored-by: Shaden Smith <ShadenTSmith@gmail.com>
Co-authored-by: eltonzheng <eltonz@microsoft.com>

* Fix correctness bug (#147)

* formatting fix (#150)

* stage3 bugfix (API) update and simplified FP16 Z3 tests (#151)

* fp16 Z3 API update and bugfix

* revert debug change

* ZeRO-3 detach and race condition bugfixes (#149)

* trying out ZeRO-3 race condition fix

* CUDA sync instead of stream

* reduction stream sync

* remove commented code

* Fix optimizer state_dict KeyError (#148)
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* fix for smaller SGS sizes, ensures each grad is backed by unique tensors (#152)

* Simplifying the logic for getting averaged gradients (#153)

* skip for now

* Z3 Docs redux (#154)

* removing some TODOs and commented code (#155)

* New Z3 defaults (#156)
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* formatting

* megatron external params
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
Co-authored-by: Shaden Smith <Shaden.Smith@microsoft.com>
Co-authored-by: Shaden Smith <ShadenTSmith@gmail.com>
Co-authored-by: eltonzheng <eltonz@microsoft.com>

* fixing buffers in transformer kernel when gelu-checkpoint is enabled

* fixing the test issue for other memory optimization flags

* fixing a bug for when attn_dropout_checkpoint is enabled

hi, i take a look at the code of column_sum_reduce, i have 2 questions:
   1. the goal of column_sum_reduce is to get the column sum of inp matrix with shape[rows, width] and the result shape should be [width],right ? It seems that the judgment condition of pos is not suitable
   2. the implementation of cuda kernel based on the asumption that, the thread with same threadIdx.y will group into a thread_block_tile, the blockDim is (32,32), i read the nvidia document https://on-demand.gputechconf.com/gtc/2017/presentation/s7622-Kyrylo-perelygin-robust-and-scalable-cuda.pdf

, THREAD BLOCK TILE is a subset of threads of a thread block, divided into tiles in row-major order. doesn't it mean thread with the same threadIdx.x will group into a thread_block_tile ?
thanks !!!!
Co-authored-by: Reza Yazdani <44502768+RezaYazdaniAminabadi@users.noreply.github.com>

Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* fix the bias-add precision and indexing and also adding the layer-norm-eps as a configurable parameter for transformer

* add ACC_HALF config

* use defined to check if ACC_Half is defined

Invalid param name

Thanks.

Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* Fix docstring

* Make screenshots clickable for easier viewing

* Navigation menu in alphabetical order; More clicable screenshots

* Rename 1Cycle doc

* Tweak naming

* check none tensors when splitting buckets

* Activation checkpoint support for non tensor input/output

* Format fixes

* Address PR comments; Add ordering edge case tests

* add -e/--examples flag to checkout submodules

* bump DSE commit

Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* Use log dist function instead of print

* Expose ranks
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>

* 1-bit adam doc fix

* 1-bit adam doc fix

* 1-bit adam doc fix
Co-authored-by: Jeff Rasley <jerasley@microsoft.com>