add a configure flag: --disable-cxx11-abi (#354)

support launch with python multiprocess (#343)

* support launch with python multiprocess

* torch example

Co-authored-by: Luo Mai <luo.mai.cs@gmail.com>

update NCCL binding (#341)

* to_nccl_op

* NCCLController::InitOnce

* broadcast with user stream

add more description

submission checkpoint

check in experiment code (#289)

* fix flags

* add log

* log

* sync step

* log

* _sync_state_op

version='0.2.2' (#267)

KungFu Jan 2020 release version 0.2.1

bump version to 0.2.0 (#212)

0.1.0 release. (#179)