simpy

Simulate discrete-event processes with shared resources using SimPy environments.

4|Updated Mar 2, 2026
One-click install
npx skills add https://github.com/shushuzn/Rairos --skill simpy-shushuzn
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: simpy
Source: https://github.com/shushuzn/Rairos/tree/main/skills/simpy
Command: npx skills add https://github.com/shushuzn/Rairos --skill simpy-shushuzn

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

SimPy helps you build accurate discrete-event simulations of systems where multiple entities interact and contend for shared resources, producing realistic time-based behavior.

Core Features & Use Cases

  • Process-based event simulation: Model entity lifecycles with generator processes that yield timeouts and events.
  • Shared resource and queue modeling: Simulate servers, priority handling, preemption, containers (bulk quantities), and stores (object queues).
  • Scheduling, synchronization, and monitoring: Coordinate parallel work with composite events and collect queue/utilization/wait-time metrics, including optional real-time synchronization.

Use cases include queueing systems (call centers, checkout lines), manufacturing and logistics pipelines, network traffic and packet routing, healthcare flow, and CPU-like scheduling with preemption.

Quick Start

Create a discrete-event queue simulation that models customers requesting a server, waiting when capacity is limited, then departing after service time for the run interval you choose.

Frequently Asked Questions about simpy

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is discrete-event simulation and when do I need it for queueing systems?

Discrete-event simulation models entity lifecycles and shared resource contention over time. You need it to analyze queueing systems like call centers or checkout lines where multiple entities interact and wait for limited server capacity.

How do I simulate shared resources and queues in Python?

You simulate shared resources and queues by setting up a SimPy Environment and defining generator-based processes that yield timeouts and resource events. This models customers requesting servers, waiting during capacity limits, and departing after service.

Can I model priority handling and preemption in a manufacturing pipeline simulation?

Yes, you can model priority handling and preemption in a manufacturing pipeline simulation. The framework supports simulating servers with priority queues and preemptive resource allocation to accurately reflect CPU-like scheduling and logistics operations.

Does real-time simulation monitoring track wait times and resource utilization?

Real-time simulation monitoring tracks wait times and resource utilization. You can coordinate parallel work with composite events and collect metrics on queue lengths, server utilization, and entity wait times during the simulation run.

What is the best way to simulate bulk quantities and object queues in logistics?

The best way to simulate bulk quantities and object queues in logistics is using containers for bulk amounts and stores for object queues. These features model bulk resource handling and entity-driven scenarios within a discrete-event environment.

What are the limitations of process-based simulation for network traffic modeling?

Process-based simulation for network traffic modeling requires defining generator processes that yield events explicitly. Complex packet routing logic may become difficult to manage if processes are deeply nested without proper synchronization and composite event coordination.