---
title: "prefetchHeap(forWorkloadSize:)"
framework: metalperformanceshaders
role: symbol
role_heading: Instance Method
path: "metalperformanceshaders/mpscommandbuffer/prefetchheap(forworkloadsize:)"
---

# prefetchHeap(forWorkloadSize:)

## Declaration

```swift
func prefetchHeap(forWorkloadSize size: Int)
```