possibilities for Asynchronous (RL online rollout) evaluation during training

[zcczhang]

🚀 Feature

I am wondering if it is possible to include the asynchronous evaluation during the training process

Motivation

For RL projects (or imitation training + online rollout evaluation), evaluation is really a bottleneck during the training process even the environments are vectorized, especially if we want to evaluate lots of long-horizon episodes. Now the training only can continue after eval is done, but it seems not necessary as the evaluation could be done with weights at that timestep, and does not matter the future training.

Pitch

Option for doing asynchronous evaluation during training

Alternatives

using separate scripts to do this

Additional context

No

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cc @borda @awaelchli @rohitgr7

[rohitgr7]

one solution I suggested on slack is to create checkpoints and run another script that monitors these checkpoints and run validation separately.

[Borda]

I think you can do it with Flow/Work? cc: @lantiga

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This issue has been automatically marked as stale because it hasn't had any recent activity. This issue will be closed in 7 days if no further activity occurs. Thank you for your contributions - the Lightning Team!