---
title: MTLTimestamp
framework: metal
role: symbol
role_heading: Type Alias
path: metal/mtltimestamp
---

# MTLTimestamp

The number of nanoseconds for a point in absolute time or Mach absolute time.

## Declaration

```swift
typealias MTLTimestamp = UInt64
```

## Discussion

Discussion The type of absolute time a Metal timestamp uses can vary with a system’s configuration, but it’s consistent for a configuration.

## See Also

### Timestamp data

- [Converting GPU timestamps into CPU time](metal/converting-gpu-timestamps-into-cpu-time.md)