disco-engine 0.0.4

A distributed event simulation core (disco) engine.

🧾 Disco Engine

Disco Engine is a Python-based distributed discrete-event simulation core (“distributed simulation runtime”). It’s designed to run large, structured simulations (e.g., supply-chain / networked process models) by executing many independent NodeRuntimes that exchange events and promises over pluggable transports.

• Deterministic single-threaded stepping per worker process
• Scales out via multiple workers and transport backends
• Built for “engine + plugins” (models as Python packages)

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Overview

At a high level, a Disco simulation is:

• a Layered Graph (scenario) that defines structure and data access,
• a Model plugin that defines simulation logic,
• an Experiment that defines parameters and run configuration,
• one or more Workers that host NodeRuntimes and step the simulation.

For local debugging and unit tests, Disco also includes a lightweight TestRun that executes a single, unpartitioned run without threading, metastore/cluster coordination, or external transports.

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✨ Features

• Worker lifecycle & state machine for long-lived simulation processes
• Routing + transports (in-process, IPC, gRPC) for node-to-node delivery
• Partitioning to distribute nodes across workers (production), while keeping deterministic node order per worker
• TestRun for fast local runs without infrastructure (single-process, in-process transport only)
• Data logging via an optional DataLogger

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🚀 Installation

pip install disco-engine

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License

This project is licensed under the Apache License, Version 2.0. See the LICENSE file for details.