[RLlib] Multi-GPU for tf-DQN/PG/A2C. #13393
Merged
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Currently, RLlib only supports multi-GPU training for tf-PPO and tf-IMPALA.
This PR adds tf-DQN, tf-A2C, and tf-PG multi-GPU support.
Adding multi-GPU support for torch and tf-eager is planned for the near future as well.
Why are these changes needed?
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