DVC Experiments run outside of the regular Git workflow for faster iteration and to avoid polluting your repository's history. Once experiments are good enough to keep or distribute, you may want to store them persistently as Git commits.
Create a Git branch from an experiment
You can use
dvc exp branch to create a new branch from an experiment, and keep
all its code and artifacts separate from your current workspace.
$ dvc exp show
───────────────────────────────────────────────────────── neutral:**Experiment** neutral:**Created** metric:**auc** param:**my_param** ───────────────────────────────────────────────────────── workspace - 0.61314 3 new-experiments Oct 19, 2020 0.61314 3 ├── ochre-dook Oct 20, 2020 0.69830 2 └── matte-vies Oct 22, 2020 0.51676 1 ─────────────────────────────────────────────────────────
Suppose you want to continue to work on
ochre-dook in a separate branch. You
can create a new Git branch by specifying the experiment and giving a new name
$ dvc exp branch ochre-dook Git branch 'ochre-dook-branch' has been created from experiment 'ochre-dook'.
Note that DVC doesn't switch to the new branch. You can create one or more branches from the existing experiments, and switch into any one manually like this:
$ git checkout ochre-dook-branch $ dvc checkout
Your workspace now contains all the files from the experiment.
Bring experiment results to your workspace
dvc exp run and
dvc exp save leave the experiment results in your
workspace for convenience. However, you may have run multiple experiments and
wish to go back to a specific one. In this case, you can restore a previous
experiment's results with
dvc exp apply. Let's see an example:
$ dvc exp show
─────────────────────────────────────────────────────────── neutral:**Experiment** neutral:**Created** metric:**auc** param:**my_param** ─────────────────────────────────────────────────────────── workspace - 0.61314 3 new-experiments Oct 19, 2020 0.61314 3 ├── ochre-dook Oct 20, 2020 0.69830 2 └── matte-vies Oct 22, 2020 0.51676 1 ─── ────────────────────────────────────────────────────────
The results found in the workspace are shown in the respective row. When you want to bring another experiment to the workspace, you can reference it using it's name, e.g.:
$ dvc exp apply ochre-dook Changes for experiment 'ochre-dook' have been applied...
⚠️ Conflicting changes in the workspace are overwritten unless
dvc exp applyrequires your project version (Git
HEAD) to be the same as when the experiment was run.
Now, if you list the experiments again with
dvc exp show, you'll see that the
workspace contains the results of
You can use standard Git commands (e.g.
git add/commit/push) to version this
experiment directly in the repository. DVC-tracked data and
artifacts are already in the DVC cache, and the rest (params, code and config
files, etc.) can be stored in Git.
Note that you need to
dvc pushin order to share or backup the DVC cache contents.