# Module not found when in tuning jons **URL:** \ **Category:** Ray Tune\ **Created:** [April 15, 2022, 6:38am UTC](https://discuss.ray.io/t/module-not-found-when-in-tuning-jons/5813 "2022-04-15T06:38:48Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![pamparana](https://avatars.discourse-cdn.com/v4/letter/p/df788c/32.png) [@pamparana](https://discuss.ray.io/u/pamparana)\ **Post date:** [April 15, 2022, 6:38am UTC](https://discuss.ray.io/t/module-not-found-when-in-tuning-jons/5813/1 "2022-04-15T06:38:48Z")
I am using ray tune for optimizing some deep learning model. I am currently getting an error like: ```auto TemporaryActor pid=90906) Traceback (most recent call last): (TemporaryActor pid=90906) File "/Users/luca/opt/anaconda3/envs/mlmod/lib/python3.9/site-packages/ray/_private/function_manager.py", line 594, in _load_actor_class_from_gcs (TemporaryActor pid=90906) actor_class = pickle.loads(pickled_class) (TemporaryActor pid=90906) ModuleNotFoundError: No module named 'mlmod' ``` `mlmod` is the package module. I had had similar setup before with optimizing time series models and that always worked. So, my code is something like: ```auto ray.init(ignore_reinit_error=True) result = tune.run( tune.with_parameters(train_model, data=data, hydra_config=config, hydra_state=state), resources_per_trial=resources_per_trial, config=search_config, num_samples=num_samples, metric="loss", mode="min", scheduler=scheduler, # TODO: We will probably need to add this if we run ray on the cloud. # sync_config=tune.SyncConfig(upload_dir="s3://something"), resume="AUTO", ) def train_model(ray_config, data, hydra_config: DictConfig, hydra_state: Any): # required to avoid https://github.com/facebookresearch/hydra/issues/903 Singleton.set_state(hydra_state) # map ray tune parameters to hydra parameters for param, value in ray_config.items(): OmegaConf.update(hydra_config, param, value, merge=False) from mlmod.apps.train import train loss = train(hydra_config, None) tune.report(loss=loss) ``` and the called train function at the moment, just does: // file: mlmod/apps/train.py def train(config: DictConfig, datamodule: LightningDataModule) → None: import numpy as np ``` return np.random.random() ``` I do not quite understand what is being serialized here and why this issue is happening. I am at a loss now what I can try and how to debug this. ---
**Author:** ![amogkam](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/amogkam/32/17_2.png) [@amogkam](https://discuss.ray.io/u/amogkam)\ **Post date:** [April 18, 2022, 9:02pm UTC](https://discuss.ray.io/t/module-not-found-when-in-tuning-jons/5813/2 "2022-04-18T21:02:15Z")
Hey @pamparana thanks for raising the issue! Can you tell me a bit more about your setup? Is this being run on multiple nodes? Is `mlmod` installed on every single node? ---
**Author:** ![amogkam](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/amogkam/32/17_2.png) [@amogkam](https://discuss.ray.io/u/amogkam)\ **Post date:** [April 18, 2022, 9:15pm UTC](https://discuss.ray.io/t/module-not-found-when-in-tuning-jons/5813/3 "2022-04-18T21:15:52Z")
Here are some other threads which might provide some useful information > > > \### What is the problem? > \### ModuleNotFoundError: No module named 'functions' > … > Does it seem the ray\_tune.py file must stay in the same directory with data/ ??? Otherwise, it doesn't work even if I put \`\`\`'../'\`\`\` in the data loader function... > Specifically, I run the same ray\_tune.py in the parent folder and child folder respectively, but only got success when I run under the parent folder. > > Cannot provide reproducible code here, because I used my own dataset. > This issue occurred whenever I switched the ray\_tune.py to a child directory (has \`\`\`../\`\`\`)... > > \*Ray version and other system information (Python version, TensorFlow version, OS):\* > Ray 0.8.5 > Python 3.7.4 > Pytorch 1.6 > TensorFlow: 2.2.0 > OS linux > > !\[image\](https://user-images.githubusercontent.com/29363464/89991868-0937d000-dcb7-11ea-9637-e5bdf15f847b.png) > > > \### Reproduction (REQUIRED) > Please provide a script that can be run to reproduce the issue. The script should have \*\*no external library dependencies\*\* (i.e., use fake or mock data / environments): > > If we cannot run your script, we cannot fix your issue. > > \- \[x\] I have verified my script runs in a clean environment and reproduces the issue. > \- \[\] I have verified the issue also occurs with the \[latest wheels\](https://docs.ray.io/en/latest/installation.html). > > > \