[chore]0.4.1 release (#803)

* [chore]0.4.1 release

* put more details in one change log

CHANGELOG.md

@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## NEXT - TBD
 ### Fixed
+
+### Added
+
+## [0.4.1] - 2021-09-17
+### Fixed
 - FSDP: We don't attach post backward hooks for params that don't require grad. However in the hook
         triggered after the post backward hook, we assert on the POST_BACKWARD state which can only
         be set in the post backward hook. Modified the assert to account for the fact that the root
@@ -34,6 +39,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - activation checkpoint: Added a context manager to disable checkpoint in case the same wrapped module
                          needs to be checkpointed and not checkpointed in different parts of
                          the module forward pass. [#772]
+- FSDP: Added a toggle with an environment variable ENABLE_NCCL_BASE_COLLECTIVES=[0,1] to allow users
+        enable/disable using new nccl base collecectives. By default, using new nccl base collectives
+        is enabled. [#801]
 
 ## [0.4.0] - 2021-07-31
 ### Fixed

docs/source/conf.py

@@ -29,7 +29,7 @@ copyright = "2020-2021, Facebook AI Research"
 author = "Facebook AI Research"
 
 # The full version, including alpha/beta/rc tags
-release = "0.4.0"
+release = "0.4.1"
 
 
 # -- General configuration ---------------------------------------------------

fairscale/__init__.py

@@ -4,7 +4,7 @@
 # LICENSE file in the root directory of this source tree.
 
 # Please update the doc version in docs/source/conf.py as well.
-__version__ = "0.4.0"
+__version__ = "0.4.1"
 
 ################################################################################
 # Import most common subpackages