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[RLlib] Issue 42396: Fix Algorithm.training_step() default implementation (multi-agent ALL_MODULES key causing error). #43316

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sven1977
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@sven1977 sven1977 commented Feb 21, 2024

Issue 42396: Fix Algorithm.training_step() default implementation (multi-agent ALL_MODULES key causing error).

Why are these changes needed?

Closes #42396

Related issue number

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  • I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
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  • I've included any doc changes needed for https://docs.ray.io/en/master/.
    • I've added any new APIs to the API Reference. For example, if I added a
      method in Tune, I've added it in doc/source/tune/api/ under the
      corresponding .rst file.
  • I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
  • Testing Strategy
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    • This PR is not tested :(

Signed-off-by: sven1977 <svenmika1977@gmail.com>
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@garymm garymm left a comment

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Thanks for the fix.
Would be nice for users if you tested this path too!

self.workers.sync_weights(
from_worker_or_learner_group=from_worker_or_trainer,
policies=list(train_results.keys()),
policies=set(train_results.keys()) - {ALL_MODULES},
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Crying out for a comment at least.

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Great catch @sven1977 !

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@simonsays1980 simonsays1980 left a comment

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LGTM

self.workers.sync_weights(
from_worker_or_learner_group=from_worker_or_trainer,
policies=list(train_results.keys()),
policies=set(train_results.keys()) - {ALL_MODULES},
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Great catch @sven1977 !

@sven1977 sven1977 merged commit 34876d8 into ray-project:master Feb 22, 2024
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@sven1977 sven1977 deleted the issue_42396_fix_algo_default_training_step_method branch October 25, 2024 21:45
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[RLlib] Algorithm.training_step fails after episode termination because "__all__" is considered a module name
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