[Bug]: Nan Problems for SAC, TQC, for AntBulletEnv-v0, HalfCheetahBulletEnv-v0 #427

ZJEast · 2023-11-28T03:48:59Z

🐛 Bug

Hello. I am trying to reproduce some algorithms or experiments, to record some data. But some expectation happens, nan is generated for some unknown reasons. Any advice to solve?

To Reproduce

python -u ../../rl-baselines3-zoo-master/train.py --algo sac --env AntBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs

python -u ../../rl-baselines3-zoo-master/train.py --algo sac --env HalfCheetahBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs

python -u ../../rl-baselines3-zoo-master/train.py --algo tqc --env AntBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs

python -u ../../rl-baselines3-zoo-master/train.py --algo tqc --env HalfCheetahBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs

Relevant log output / Error message

python -u ../../rl-baselines3-zoo-master/train.py --algo sac --env AntBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs
Traceback (most recent call last):
  File "/share/home/zhangjundong/exp/sac-AntBulletEnv-v0/../../rl-baselines3-zoo-master/train.py", line 4, in <module>
    train()
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/train.py", line 272, in train
    exp_manager.learn(model)
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/exp_manager.py", line 240, in learn
    model.learn(self.n_timesteps, **kwargs)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/sac.py", line 307, in learn
    return super().learn(
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/off_policy_algorithm.py", line 347, in learn
    self.train(batch_size=self.batch_size, gradient_steps=gradient_steps)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/sac.py", line 219, in train
    self.actor.reset_noise()
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/policies.py", line 145, in reset_noise
    self.action_dist.sample_weights(self.log_std, batch_size=batch_size)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/distributions.py", line 508, in sample_weights
    self.weights_dist = Normal(th.zeros_like(std), std)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/normal.py", line 56, in __init__
    super().__init__(batch_shape, validate_args=validate_args)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/distribution.py", line 68, in __init__
    raise ValueError(
ValueError: Expected parameter scale (Tensor of shape (300, 8)) of distribution Normal(loc: torch.Size([300, 8]), scale: torch.Size([300, 8])) to satisfy the constraint GreaterThan(lower_bound=0.0), but found invalid values:
tensor([[nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        ...,
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan]], device='cuda:0',
       grad_fn=<ExpBackward0>)

python -u ../../rl-baselines3-zoo-master/train.py --algo sac --env HalfCheetahBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs
Traceback (most recent call last):
  File "/share/home/zhangjundong/exp/sac-HalfCheetahBulletEnv-v0/../../rl-baselines3-zoo-master/train.py", line 4, in <module>
    train()
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/train.py", line 272, in train
    exp_manager.learn(model)
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/exp_manager.py", line 240, in learn
    model.learn(self.n_timesteps, **kwargs)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/sac.py", line 307, in learn
    return super().learn(
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/off_policy_algorithm.py", line 347, in learn
    self.train(batch_size=self.batch_size, gradient_steps=gradient_steps)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/sac.py", line 219, in train
    self.actor.reset_noise()
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/sac/policies.py", line 145, in reset_noise
    self.action_dist.sample_weights(self.log_std, batch_size=batch_size)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/distributions.py", line 508, in sample_weights
    self.weights_dist = Normal(th.zeros_like(std), std)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/normal.py", line 56, in __init__
    super().__init__(batch_shape, validate_args=validate_args)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/distribution.py", line 68, in __init__
    raise ValueError(
ValueError: Expected parameter scale (Tensor of shape (300, 6)) of distribution Normal(loc: torch.Size([300, 6]), scale: torch.Size([300, 6])) to satisfy the constraint GreaterThan(lower_bound=0.0), but found invalid values:
tensor([[nan, nan, nan, nan, nan, nan],
        [nan, nan, nan, nan, nan, nan],
        [nan, nan, nan, nan, nan, nan],
        ...,
        [nan, nan, nan, nan, nan, nan],
        [nan, nan, nan, nan, nan, nan],
        [nan, nan, nan, nan, nan, nan]], device='cuda:0',
       grad_fn=<ExpBackward0>)

python -u ../../rl-baselines3-zoo-master/train.py --algo tqc --env AntBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs
Traceback (most recent call last):
  File "/share/home/zhangjundong/exp/tqc-AntBulletEnv-v0/../../rl-baselines3-zoo-master/train.py", line 4, in <module>
    train()
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/train.py", line 272, in train
    exp_manager.learn(model)
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/exp_manager.py", line 240, in learn
    model.learn(self.n_timesteps, **kwargs)
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/tqc.py", line 302, in learn
    return super().learn(
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/off_policy_algorithm.py", line 347, in learn
    self.train(batch_size=self.batch_size, gradient_steps=gradient_steps)
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/tqc.py", line 213, in train
    self.actor.reset_noise()
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/policies.py", line 144, in reset_noise
    self.action_dist.sample_weights(self.log_std, batch_size=batch_size)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/distributions.py", line 508, in sample_weights
    self.weights_dist = Normal(th.zeros_like(std), std)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/normal.py", line 56, in __init__
    super().__init__(batch_shape, validate_args=validate_args)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/distribution.py", line 68, in __init__
    raise ValueError(
ValueError: Expected parameter scale (Tensor of shape (300, 8)) of distribution Normal(loc: torch.Size([300, 8]), scale: torch.Size([300, 8])) to satisfy the constraint GreaterThan(lower_bound=0.0), but found invalid values:
tensor([[nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        ...,
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan],
        [nan, nan, nan,  ..., nan, nan, nan]], device='cuda:0',
       grad_fn=<ExpBackward0>)

python -u ../../rl-baselines3-zoo-master/train.py --algo tqc --env HalfCheetahBulletEnv-v0 --n-timesteps 20000000 --tensorboard-log tf-logs
Traceback (most recent call last):
  File "/share/home/zhangjundong/exp/tqc-HalfCheetahBulletEnv-v0/../../rl-baselines3-zoo-master/train.py", line 4, in <module>
    train()
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/train.py", line 272, in train
    exp_manager.learn(model)
  File "/share/home/zhangjundong/rl-baselines3-zoo-master/rl_zoo3/exp_manager.py", line 240, in learn
    model.learn(self.n_timesteps, **kwargs)
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/tqc.py", line 302, in learn
    return super().learn(
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/off_policy_algorithm.py", line 347, in learn
    self.train(batch_size=self.batch_size, gradient_steps=gradient_steps)
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/tqc.py", line 213, in train
    self.actor.reset_noise()
  File "/share/home/zhangjundong/stable-baselines3-contrib-master/sb3_contrib/tqc/policies.py", line 144, in reset_noise
    self.action_dist.sample_weights(self.log_std, batch_size=batch_size)
  File "/share/home/zhangjundong/stable-baselines3-master/stable_baselines3/common/distributions.py", line 508, in sample_weights
    self.weights_dist = Normal(th.zeros_like(std), std)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/normal.py", line 56, in __init__
    super().__init__(batch_shape, validate_args=validate_args)
  File "/share/home/zhangjundong/.local/lib/python3.9/site-packages/torch/distributions/distribution.py", line 68, in __init__
    raise ValueError(
ValueError: Expected parameter scale (Tensor of shape (300, 6)) of distribution Normal(loc: torch.Size([300, 6]), scale: torch.Size([300, 6])) to satisfy the constraint GreaterThan(lower_bound=0.0), but found invalid values:
tensor([[0.0026, 0.0041,    nan, 0.0036, 0.0046, 0.0034],
        [0.0054, 0.0040,    nan, 0.0035, 0.0053, 0.0054],
        [0.0192, 0.0061,    nan, 0.0105, 0.0105, 0.0105],
        ...,
        [0.0257, 0.0262,    nan, 0.0058, 0.0023, 0.0098],
        [0.1410, 0.0130,    nan, 0.1707, 0.1281, 0.0216],
        [0.0494, 0.0480,    nan, 0.0506, 0.0509, 0.0487]], device='cuda:0',
       grad_fn=<ExpBackward0>)

System Info

OS: Linux-3.10.0-1160.el7.x86_64-x86_64-with-glibc2.17 # 1 SMP Mon Oct 19 16:18:59 UTC 2020
Python: 3.9.18
Stable-Baselines3: 2.2.1
PyTorch: 2.1.0+cu121
GPU Enabled: True
Numpy: 1.26.1
Cloudpickle: 3.0.0
Gymnasium: 0.29.1
OpenAI Gym: 0.26.2

Checklist

I have checked that there is no similar issue in the repo
I have read the SB3 documentation
I have read the RL Zoo documentation
I have provided a minimal and working example to reproduce the bug
I've used the markdown code blocks for both code and stack traces.

qgallouedec · 2023-11-28T09:13:16Z

This may be due to a learning rate too high, see #156 (comment); do you use the default hyperparams?

Also related (and probably duplicate): DLR-RM/stable-baselines3#1401 and DLR-RM/stable-baselines3#1418

ZJEast · 2023-11-28T09:18:33Z

yes, I use the default hyperparams, I try different learning rate later.

araffin · 2023-11-28T09:38:02Z

Hello,
thanks for sharing the bug report.
Does the NaN happen only for some runs or for all runs?
Could you log and share a failed run using W&B? (that would allow us to take a look at all the logged data)

I also assume you are using pybullet gymnasium repo?

I'll try to reproduce the issue in the meantime.

Also related: DLR-RM/stable-baselines3#1372 changing to AdamW might solve the problem too.

ZJEast · 2023-11-28T09:52:34Z

I have tried TD3, SAC, TQC on some pybullet envs. And it only happens for the task I mention, the others is fine.
I install pybullet env by 'pip install -r ./requirements.txt' .

I can upload some log file.

sac-AntBulletEnv-v0.zip
sac-HalfCheetahBulletEnv-v0.zip
tqc-AntBulletEnv-v0.zip
tqc-HalfCheetahBulletEnv-v0.zip

araffin · 2023-11-28T10:08:02Z

Thanks =)

Looking at the log it seems to be due to an explosion of std (and you are using a much larger budget that the one we were using by default).
So, setting use_expln=True (and maybe using AdamW) should solve your issue.

I would appreciate a PR that adds this parameter =)

Hmm, for TD3 it is weird if it happens as it doesn't rely on any distribution.

EDIT: I guess the issue is similar to Stable-Baselines-Team/stable-baselines3-contrib#146 by @qgallouedec

qgallouedec · 2023-11-28T10:12:48Z

Bug already encountered in openrlbenchmark, ~~I might have forgotten to report it~~: https://wandb.ai/openrlbenchmark/sb3/runs/27cez5ua
EDIT: I did report it, you're right @araffin ;)

qgallouedec · 2023-11-28T10:21:09Z

For TD3, I only found two runs where you have an explosion of the losses, but this didn't lead to the bug:
https://wandb.ai/openrlbenchmark/sb3/runs/2qdjqemd (Walker2DBulletEnv-v0)
https://wandb.ai/openrlbenchmark/sb3/runs/ffc7kx3m (BipedalWalkerHardcore-v0)
What a wonderful tool openrlbenchmark is, ping @vwxyzjn ;)

ZJEast · 2023-12-01T06:30:24Z

after I change the hyperparams from

policy_kwargs: "dict(log_std_init=-3, net_arch=[400, 300])"

to

policy_kwargs: "dict(log_std_init=-3, net_arch=[400, 300], use_expln=True)"

this problem never happens again, so let's close this issue

araffin · 2023-12-01T06:45:39Z

Thanks for trying out =)
i'm reopening as we need to change the defaults (we would welcome a PR).

ZJEast added the bug Something isn't working label Nov 28, 2023

araffin added documentation Improvements or additions to documentation enhancement New feature or request help wanted Help from contributors is needed labels Nov 28, 2023

ZJEast closed this as completed Dec 1, 2023

araffin reopened this Dec 1, 2023

araffin mentioned this issue Dec 12, 2023

log_std filled with NaNs when using PPO with use_sde=True DLR-RM/stable-baselines3#1593

Closed

5 tasks

tfederico mentioned this issue Feb 2, 2024

Two similar custom environments, PPO learns on both but SAC only on one DLR-RM/stable-baselines3#1824

Closed

5 tasks

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[Bug]: Nan Problems for SAC, TQC, for AntBulletEnv-v0, HalfCheetahBulletEnv-v0 #427

[Bug]: Nan Problems for SAC, TQC, for AntBulletEnv-v0, HalfCheetahBulletEnv-v0 #427

ZJEast commented Nov 28, 2023 •

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qgallouedec commented Nov 28, 2023 •

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ZJEast commented Nov 28, 2023

araffin commented Nov 28, 2023

ZJEast commented Nov 28, 2023

araffin commented Nov 28, 2023 •

edited

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qgallouedec commented Nov 28, 2023 •

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qgallouedec commented Nov 28, 2023

ZJEast commented Dec 1, 2023

araffin commented Dec 1, 2023

[Bug]: Nan Problems for SAC, TQC, for AntBulletEnv-v0, HalfCheetahBulletEnv-v0 #427

[Bug]: Nan Problems for SAC, TQC, for AntBulletEnv-v0, HalfCheetahBulletEnv-v0 #427

Comments

ZJEast commented Nov 28, 2023 • edited Loading

🐛 Bug

To Reproduce

Relevant log output / Error message

System Info

Checklist

qgallouedec commented Nov 28, 2023 • edited Loading

ZJEast commented Nov 28, 2023

araffin commented Nov 28, 2023

ZJEast commented Nov 28, 2023

araffin commented Nov 28, 2023 • edited Loading

qgallouedec commented Nov 28, 2023 • edited Loading

qgallouedec commented Nov 28, 2023

ZJEast commented Dec 1, 2023

araffin commented Dec 1, 2023

ZJEast commented Nov 28, 2023 •

edited

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qgallouedec commented Nov 28, 2023 •

edited

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araffin commented Nov 28, 2023 •

edited

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qgallouedec commented Nov 28, 2023 •

edited

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