---
title: "init(threadsPerGrid:threadsPerThreadgroup:)"
framework: metal
role: symbol
role_heading: Initializer
path: "metal/mtldispatchthreadsindirectarguments/init(threadspergrid:threadsperthreadgroup:)"
---

# init(threadsPerGrid:threadsPerThreadgroup:)

## Declaration

```swift
init(threadsPerGrid: (UInt32, UInt32, UInt32), threadsPerThreadgroup: (UInt32, UInt32, UInt32))
```