Update the fast training with profiling tool (#757)

* draft for profiling

Signed-off-by: Yuchen Xu <yuchenx@nvidia.com>

* fixed coding style errors

* ready for discussion

* checkpoint missing nsys figures

* ready for review

* addressed Nic's comments

* fixed typo

* removed output files

* intermediate commit with experiments included

* ready for review

* various updates; ready for review

* addressed style comments

Co-authored-by: Yuchen Xu <yuchenx@nvidia.com>

Author: yuchen-xu

.gitignore

@@ -150,3 +150,4 @@ deployment/bentoml/mednist_classifier_bentoml.py
 deployment/ray/mednist_classifier_start.py
 *.nii.gz
 3d_segmentation/out
+*.nsys-rep