---
title: requiredThreadsPerThreadgroup
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtltilerenderpipelinedescriptor/requiredthreadsperthreadgroup
---

# requiredThreadsPerThreadgroup

## Declaration

```swift
var requiredThreadsPerThreadgroup: MTLSize { get set }
```

## Discussion

Discussion Sets the required threads-per-threadgroup during tile dispatches. The threadsPerTile argument of any tile dispatch must match to this value if it is set. Setting this to a size of 0 in every dimension disables this property