An execution engine. More...

#include <dnnl.hpp>

Inheritance diagram for dnnl::engine:

Collaboration diagram for dnnl::engine:

Public Types
enum	kind
	Kinds of engines. More...

Public Member Functions
	engine ()=default
	Constructs an empty engine. More...

	engine (kind kind, size_t index)
	Constructs an engine. More...

	engine (kind kind, cl_device_id device, cl_context context)
	Constructs an engine from OpenCL device and context objects. More...

	engine (const handle< dnnl_primitive_desc_t > &pd)
	Constructs an engine based on a primitive from the primitive descriptor `pd` by querying its engine. More...

kind	get_kind () const
	Returns the kind of the engine. More...

cl_context	get_ocl_context () const
	Returns the OpenCL context associated with the engine. More...

cl_device_id	get_ocl_device () const
	Returns the OpenCL device associated with the engine. More...

	handle ()=default
	Constructs an empty handle object. More...

	handle (const handle< T, traits > &)=default
	Copy constructor.

	handle (handle< T, traits > &&)=default
	Move constructor.

	handle (T t, bool weak=false)
	Constructs a handle wrapper object from a C API handle. More...

Public Member Functions inherited from dnnl::handle< dnnl_engine_t >
bool	operator== (const handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &other) const
	Equality operator. More...

bool	operator!= (const handle &other) const
	Inequality operator. More...

	handle ()=default
	Constructs an empty handle object. More...

	handle (const handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &)=default
	Copy constructor.

	handle (handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &&)=default
	Move constructor.

	handle (dnnl_engine_t t, bool weak=false)
	Constructs a handle wrapper object from a C API handle. More...

handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &	operator= (const handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &)=default
	Assignment operator.

handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &	operator= (handle< dnnl_engine_t, handle_traits< dnnl_engine_t > > &&)=default
	Move assignment operator.

void	reset (dnnl_engine_t t, bool weak=false)
	Resets the handle wrapper objects to wrap a new C API handle. More...

dnnl_engine_t	get (bool allow_empty=false) const
	Returns the underlying C API handle. More...

	operator dnnl_engine_t () const
	Converts a handle to the underlying C API handle type. More...

	operator bool () const
	Checks whether the object is empty. More...

Static Public Member Functions
static size_t	get_count (kind kind)
	Returns the number of engines of a certain kind. More...

template<typename primitive_desc >
static engine	query (const primitive_desc &pd)
	Returns the engine of a primitive descriptor. More...

Detailed Description

An execution engine.

Examples:: cnn_inference_f32.cpp, cnn_inference_int8.cpp, cnn_training_f32.cpp, cpu_cnn_training_bf16.cpp, cpu_matmul_quantization.cpp, cpu_rnn_inference_f32.cpp, cpu_rnn_inference_int8.cpp, cpu_sgemm_and_matmul.cpp, getting_started.cpp, gpu_opencl_interop.cpp, inference_int8_matmul.cpp, memory_format_propagation.cpp, performance_profiling.cpp, and rnn_training_f32.cpp.

Member Enumeration Documentation

◆ kind

enum dnnl::engine::kind

strong

Kinds of engines.

Enumerator
any	An unspecified engine.
cpu	CPU engine.
gpu	GPU engine.

Constructor & Destructor Documentation

◆ engine() [1/4]

dnnl::engine::engine ( )

default

Constructs an empty engine.

An empty engine cannot be used in any operations.

◆ engine() [2/4]

dnnl::engine::engine	(	kind	kind,
		size_t	index
	)

inline

Constructs an engine.

Parameters

kind	The kind of engine to construct.
index	The index of the engine. Must be less than the value returned by get_count() for this particular kind of engine.

◆ engine() [3/4]

dnnl::engine::engine	(	kind	kind,
		cl_device_id	device,
		cl_context	context
	)

inline

Constructs an engine from OpenCL device and context objects.

Parameters

kind	The kind of engine to construct.
device	The OpenCL device that this engine will encapsulate.
context	The OpenCL context (containing the device) that this engine will use for all operations.

◆ engine() [4/4]

dnnl::engine::engine ( const handle< dnnl_primitive_desc_t > & pd )

inline

Constructs an engine based on a primitive from the primitive descriptor pd by querying its engine.

Parameters

pd	The primitive descriptor to query.

Member Function Documentation

◆ get_count()

static size_t dnnl::engine::get_count ( kind kind )

inlinestatic

Returns the number of engines of a certain kind.

Parameters

kind	The kind of engines to count.

Returns: The number of engines of the specified kind.

◆ get_kind()

kind dnnl::engine::get_kind ( ) const

inline

Returns the kind of the engine.

Returns: The kind of the engine.

◆ get_ocl_context()

cl_context dnnl::engine::get_ocl_context ( ) const

inline

Returns the OpenCL context associated with the engine.

Returns: OpenCL context.

Examples:: gpu_opencl_interop.cpp.

◆ get_ocl_device()

cl_device_id dnnl::engine::get_ocl_device ( ) const

inline

Returns the OpenCL device associated with the engine.

Returns: OpenCL device.

◆ query()

template<typename primitive_desc >

static engine dnnl::engine::query ( const primitive_desc & pd )

inlinestatic

Returns the engine of a primitive descriptor.

Parameters

pd	The primitive descriptor to query.

Returns: A weak handle to the engine that the primitive descriptor was created with.

◆ handle() [1/2]

dnnl::handle< T, traits >::handle

default

Constructs an empty handle object.

Warning: Uninitialized object cannot be used in most library calls and is equivalent to a null pointer. Any attempt to use its methods, or passing it to the other library function, will cause an exception to be thrown.

◆ handle() [2/2]

dnnl::handle< T, traits >::handle

inlineexplicit

Constructs a handle wrapper object from a C API handle.

Parameters

t	The C API handle to wrap.
weak	A flag specifying whether to construct a weak wrapper; defaults to `false`.

The documentation for this struct was generated from the following file:

include/dnnl.hpp

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ kind

Constructor & Destructor Documentation

◆ engine() [1/4]

◆ engine() [2/4]

◆ engine() [3/4]

◆ engine() [4/4]

Member Function Documentation

◆ get_count()

◆ get_kind()

◆ get_ocl_context()

◆ get_ocl_device()

◆ query()

◆ handle() [1/2]

◆ handle() [2/2]