Test turning all grad checkpointings off

[javak87]

Description

This is a merge branch related to the following PRs:
#1151
#1152
#1153
#1155
#1156

Issue Number

Refs #1141

Checklist before asking for review

• I have performed a self-review of my code
• My changes comply with basic sanity checks:
  • I have fixed formatting issues with ./scripts/actions.sh lint
  • I have run unit tests with ./scripts/actions.sh unit-test
  • I have documented my code and I have updated the docstrings.
  • I have added unit tests, if relevant
• I have tried my changes with data and code:
  • I have run the integration tests with ./scripts/actions.sh integration-test
  • (bigger changes) I have run a full training and I have written in the comment the run_id(s): launch-slurm.py --time 60
  • (bigger changes and experiments) I have shared a hegdedoc in the github issue with all the configurations and runs for this experiments
• I have informed and aligned with people impacted by my change:
  • for config changes: the MatterMost channels and/or a design doc
  • for changes of dependencies: the MatterMost software development channel

Comparing the baseline and current PR performance

When pred_gradient_checkpoint_mode is set to false, the performance and GPU memory peak are as follows:

default_config.yml:

../WeatherGenerator-private/hpc/launch-slurm.py --time 60

mixed.yml:

../WeatherGenerator-private/hpc/launch-slurm.py --time 60 --config ./config/mixed.yml