---
title: "init(pipelines:)"
framework: Compute Graph
role: symbol
role_heading: Initializer
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: "computegraph/computegraphsimulation/init(pipelines:)"
---

# init(pipelines:)

Initialize a ComputeGraphSimulation for the given pipelines, or a default pipeline if not specified.

## Declaration

```swift
convenience init(pipelines: ComputeNodeGraph.Pipelines?)
```

## Discussion

Discussion The simulation will use the ComputeGraphFramework’s default queue for operations such as fastForward() and resetting after setting the pipeline. Prefer init(pipeline:commandQueue:) to this method.