> For the complete documentation index, see [llms.txt](https://materialsproject.gitbook.io/persson-group-handbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://materialsproject.gitbook.io/persson-group-handbook/computing/high-performance-computing/nersc-perlmutter/frequently-encountered-blockers.md).

# Frequently encountered blockers

## SLURM is rejecting my jobs because my home directory is full

e.g. "`home directory over quota"` ,

We are limited to 40 GB of files in our home directories. This error indicates you have to many files.

### Steps to diagnose:

1. Run `showquota` or `myquota` to see your file system space usage. If 'home' is 40GB or greater that's your issue.
2. Run `du -sh *` in your home directory and look for any large directories.
3. Run `du -sh .[^.]*` in your home directory and look for any large dot directories. Common issues are large `.cache` directory and large `.conda` directory
4. Alternatively, you can use the Ncurses Disk Utility tool via shifter to view your home directory usage with an ncurses GUI: 

   ```
   shifterimg pull bytesco/ncdu
   shifter --entrypoint --image=bytesco/ncdu
   ```

![](/files/QbqjdziX5trSVKwEfG6V)

### What to do if Conda env dirs are too large?

* Quick solution: `conda clean --all`
* Permanent Solution: [Change conda env directory to a project directory](https://materialsproject.gitbook.io/persson-group-handbook/computing/high-performance-computing/nersc-perlmutter-cori/conda-environments#change-default-conda-settings-optional)

### What to do if .cache is too large?

* Quick solution: Delete it! `rm -rf .cache`
  * Is this safe to do? Yes ([probably](https://askubuntu.com/questions/102046/is-it-okay-to-delete-the-cache-folder)) but you may want to move a backup of the directory to a project directory if you're worried about it.