# Introduction

Motoko is a workflow manager built on top of
[BlackDynamite](https://gitlab.com/blackdynamite/blackdynamite), a
Python-based tool for managing job submissions suited for HPC facilities in an
automated and highly parallelized fashion.

Motoko adds a workflow layer over several BlackDynamite studies. Each study
describes and runs one parametrized calculation; Motoko coordinates how those
studies depend on each other, when follow-up tasks are created, and when the
overall workflow is finished.

The package provides:

- A `Workflow` object that loads a workflow directory and exposes its task
  managers.
- A `TaskManager` wrapper around each BlackDynamite study.
- An asynchronous orchestrator API for dependency-driven workflows.
- Event actions for workflows that react to finished or failed runs.
- A `motoko` command-line interface for creating, launching, monitoring, and
  cleaning workflows.