* Fix fail to create_shared_mem_array in ddp spawn train #4110
Fix fail to create_shared_mem_array in ddp spawn train #4110
* [Bugfix] Fix fail to create_shared_mem_array in ddp spawn train #4110
[Bugfix] Fix fail to create_shared_mem_array in ddp spawn train #4110
Replace random.seed() to random_ = random.Random()
* Update pytorch.py
Co-authored-by: Quan (Andy) Gan <coin2028@hotmail.com>