GpuDelegateFactory.Options

public static class GpuDelegateFactory.Options

Known Direct Subclasses

Delegate options.

Nested Classes

enum GpuDelegateFactory.Options.GpuBackend Which GPU backend to select.

Constants

int	INFERENCE_PREFERENCE_FAST_SINGLE_ANSWER	Delegate will be used only once, therefore, bootstrap/init time should be taken into account.
int	INFERENCE_PREFERENCE_SUSTAINED_SPEED	Prefer maximizing the throughput.

Public Constructors

Options()

Public Methods

boolean	areQuantizedModelsAllowed()
GpuDelegateFactory.Options.GpuBackend	getForceBackend()
int	getInferencePreference()
String	getModelToken()
String	getSerializationDir()
boolean	isPrecisionLossAllowed()
GpuDelegateFactory.Options	setForceBackend(GpuDelegateFactory.Options.GpuBackend forceBackend) Sets the GPU Backend.
GpuDelegateFactory.Options	setInferencePreference(int preference) Sets the inference preference for precision/compilation/runtime tradeoffs.
GpuDelegateFactory.Options	setPrecisionLossAllowed(boolean precisionLossAllowed) Sets whether precision loss is allowed.
GpuDelegateFactory.Options	setQuantizedModelsAllowed(boolean quantizedModelsAllowed) Enables running quantized models with the delegate.
GpuDelegateFactory.Options	setSerializationParams(String serializationDir, String modelToken) Enables serialization on the delegate.

Inherited Methods

From class java.lang.Object

boolean	equals(Object arg0)
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Constants

public static final int INFERENCE_PREFERENCE_FAST_SINGLE_ANSWER

Delegate will be used only once, therefore, bootstrap/init time should be taken into account.

Constant Value: 0

public static final int INFERENCE_PREFERENCE_SUSTAINED_SPEED

Prefer maximizing the throughput. Same delegate will be used repeatedly on multiple inputs.

Constant Value: 1

Public Constructors

public Options ()

Public Methods

public boolean areQuantizedModelsAllowed ()

public GpuDelegateFactory.Options.GpuBackend getForceBackend ()

public int getInferencePreference ()

public String getModelToken ()

public String getSerializationDir ()

public boolean isPrecisionLossAllowed ()

public GpuDelegateFactory.Options setForceBackend (GpuDelegateFactory.Options.GpuBackend forceBackend)

Sets the GPU Backend.

Parameters

forceBackend

public GpuDelegateFactory.Options setInferencePreference (int preference)

Sets the inference preference for precision/compilation/runtime tradeoffs.

Parameters

preference	One of `INFERENCE_PREFERENCE_FAST_SINGLE_ANSWER` (default), `INFERENCE_PREFERENCE_SUSTAINED_SPEED`.

public GpuDelegateFactory.Options setPrecisionLossAllowed (boolean precisionLossAllowed)

Sets whether precision loss is allowed.

Parameters

precisionLossAllowed	When `true` (default), the GPU may quantify tensors, downcast values, process in FP16. When `false`, computations are carried out in 32-bit floating point.

public GpuDelegateFactory.Options setQuantizedModelsAllowed (boolean quantizedModelsAllowed)

Enables running quantized models with the delegate.

WARNING: This is an experimental API and subject to change.

Parameters

quantizedModelsAllowed	When `true` (default), the GPU may run quantized models.

public GpuDelegateFactory.Options setSerializationParams (String serializationDir, String modelToken)

Enables serialization on the delegate. Note non-null serializationDir and modelToken are required for serialization.

WARNING: This is an experimental API and subject to change.

Parameters

serializationDir	The directory to use for storing data. Caller is responsible to ensure the model is not stored in a public directory. It's recommended to use `Context.getCodeCacheDir()` to provide a private location for the application on Android.
modelToken	The token to be used to identify the model. Caller is responsible to ensure the token is unique to the model graph and data.