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# MLComputeUnits

The set of processing-unit configurations the model can use to make predictions.

```
enum MLComputeUnits
```

## Overview

Use this enumeration to set or inspect the processing units you allow a model to use when it makes a prediction.

Use `all` to allow the OS to select the best processing unit to use (including the neural engine, if available).

Use [`MLComputeUnits.cpuOnly`](/documentation/CoreML/MLComputeUnits/cpuOnly) to restrict the model to the CPU, if your app might run in the background or runs other GPU intensive tasks.

## Topics

### Processing Unit Configurations

[`MLComputeUnits.all`](/documentation/CoreML/MLComputeUnits/all)

The option you choose to allow the model to use all compute units available, including the neural engine.

[`MLComputeUnits.cpuOnly`](/documentation/CoreML/MLComputeUnits/cpuOnly)

The option you choose to limit the model to only use the CPU.

[`MLComputeUnits.cpuAndGPU`](/documentation/CoreML/MLComputeUnits/cpuAndGPU)

The option you choose to allow the model to use both the CPU and GPU, but not the neural engine.

[`MLComputeUnits.cpuAndNeuralEngine`](/documentation/CoreML/MLComputeUnits/cpuAndNeuralEngine)

The option you choose to allow the model to use both the CPU and neural engine, but not the GPU.

### Creating compute units

[`init(rawValue:)`](/documentation/CoreML/MLComputeUnits/init(rawValue:))


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