Advanced Docs Part 1#52
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islas
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Jun 12, 2026
Ensure that dependency outputs are current at Action start To account for different execution context between the orchestrator task and the actual Action run, Actions must save+load their outputs. This is fine for a local run host where the tasks are directly executed by the main orchestrator process and thus executed in DAG-dependency order. However in HPC environments tasks are submitted into a queue in DAG order with dependency info set at that time. Execution and thus evaluation of outputs will not occur until the real host runs the job. This delay would cause dependency outputs to run with the old values set at submission time instead of the values after dependencies have finished executing. To remedy this, building off of #52, Actions now reload the dependency outputs inside the `action_launcher.py` Note that dependency outputs will still be incorrect within the main orchestrator process context, but at this stage this information should not be needed as is never stored beyond the pickle file. Should users need the dependency output information per action in this situation (e.g. post_run_actions() for the Host) users can call the internal API function `Action.reload_dependency_outputs()` manually.
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Add much needed documentation on custom
Actionclasses, complex usage of dereference strings, and theLogger:Loggerreference API introducedOptionLoader)Actionand expected practice, with notes on execution contextsA minor fix of having
Action.outputspersistent across execution context is also included.Documentation was slightly restructured to avoid unnecessary nesting/clicking.