How severe does this issue affect your experience of using Ray? High: It blocks me to complete my task. I’ve finished training with a bunch of algorithms using the Tuner() API and air library and they all have their appropriate checkpoint folders and files. However I can’t seem to restore those c…

@james116blue , Please post a complete reproduction script! Algorithm.load_checkpoint() is deprecated. The “correct” way to load checkpoints is with the Algorithm.from_checkpoint() API. You can find multiple examples in the examples folder and our documentation . You can, for example retrieve th…

hi, i think you need to restore from: G:\Repos\ML_CIV6\models(3w2s)-d(2w1s)_default\APEX\APEX_my_env_5ed3c_00000_0_2022-09-27_20-07-42\ if you are using Tuner()

I have tried that, and bunch of other folder path and none of them worked

Can you upgrade to 2.1 and check?

I’ve tried 2.1, same issue persists.

I found loading from checkpoint a little tricky too. This works for me: algo_cls = get_algorithm_class("DQN") algo = algo_cls(config=config) checkpoint_path = "/path_to_folder/checkpoint_000225/rllib_checkpoint.json" algo.restore(checkpoint_path)

Hi, please consider upgrading to 2.2 and use the Algorithm.from_checkpoint API. Other than that: Can you post a reproduction script, please?

Same error for me after successful training config = ( PPOConfig() .rollouts( num_rollout_workers=4, # rollout_fragment_length=512 ) .training( train_batch_size=512, lr=2e-5, gamma=0.99, lamb…

Thank you for your detailed answer. I have found solution thanks to your reply and updated documentation

[image] arturn: Algorithm.from_checkpoint() Algorithm.from_checkpoint() can not load the checkpoints of Tuning in Ray 2.2. Could you please show how we can use it ? if it is possible in Colab.

Hi @AI360 , This is an example from our docs: ray/saving_and_loading_algos_and_policies.py at master · ray-project/ray · GitHub

Unable to restore fully trained checkpoint

RLlib

fardinabbasi October 21, 2023, 4:54am 21

Hi @arturn ,
I used Algorithm.from_checkpoint , but I still encountered the same issue. Would you please take a look at this post.

Topic		Replies	Views
Another tune after restoring a PPO algorithm Checkpointing, Restoring	2	395	December 15, 2023
Tuner cannot restore the checkpoints! Ray Tune	10	1076	November 20, 2023
Restoring RLlib Run Using Tuner.restore RLlib	5	736	February 17, 2024
Policy rollout on Ray Tune 2.0 RLlib	4	390	December 15, 2022
Using Tuner.restore in ray Checkpointing, Restoring	0	540	November 29, 2023

Unable to restore fully trained checkpoint

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