Caching Snakemake Tasks

To avoid redoing work when executing Snakemake workflows multiple times, you can enable task caching. Rules whose outputs have been cached will not execute, saving time and resources.

To enable caching, re-register your workflow with the --cache-tasks flag. For example

latch register -y . --snakefile Snakefile --cache-tasks

Cached outputs persist across workflow versions, so if a downstream rule has an error, and you register a new version, the upstream rules will be cached. Caches are invalidated when a rule’s properties change. If a rule references a script, the cache will also be invalidated if the script changes.