---
title: simulation
framework: realitykit
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: realitykit/computegraphruntimecomponent/simulation
---

# simulation

The underlying compute graph simulation driving this entity.

## Declaration

```swift
var simulation: ComputeGraphSimulation { get }
```