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Why DQN puts predicted q value and target q value on cpu? #213

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yueyang130 opened this issue Feb 15, 2022 · 0 comments
Open

Why DQN puts predicted q value and target q value on cpu? #213

yueyang130 opened this issue Feb 15, 2022 · 0 comments

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@yueyang130
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see

rlpyt/rlpyt/agents/dqn/dqn_agent.py

Line 29 in f04f23d

return q.cpu()

The predicted q value and target q value are calculated on GPU and then be put on cpu. Consequently, the dqn loss is calculated on cpu. I'm confused why not finish all on GPU.
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