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# ComputeUnitKind

A type of hardware compute unit available for model inference.

```
enum ComputeUnitKind
```

## Overview

You use compute unit kinds with [`SpecializationOptions`](/documentation/CoreAI/SpecializationOptions) to control which hardware
the framework targets when specializing a model. By default, specialization uses all
available compute units on the device.

## Topics

### Defining compute unit types

[`ComputeUnitKind.cpu`](/documentation/CoreAI/ComputeUnitKind/cpu)

The central processing unit.

[`ComputeUnitKind.gpu`](/documentation/CoreAI/ComputeUnitKind/gpu)

The graphics processing unit.

[`ComputeUnitKind.neuralEngine`](/documentation/CoreAI/ComputeUnitKind/neuralEngine)

The Neural Engine.

### Checking availability

[`availableKinds`](/documentation/CoreAI/ComputeUnitKind/availableKinds)

The compute unit kinds available on the current device.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

---

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