dnnl::memory::desc Struct Reference

A memory descriptor. More...

#include <dnnl.hpp>

Collaboration diagram for dnnl::memory::desc:

Public Member Functions
	desc ()
	Constructs a zero memory descriptor.
	desc (const dims &adims, data_type adata_type, format_tag aformat_tag)
	Constructs a memory descriptor. More...
	desc (const dims &adims, data_type adata_type, const dims &astrides)
	Constructs a memory descriptor by strides. More...
	desc (const dnnl_memory_desc_t &adata)
	Constructs a memory descriptor from a C API data structure. More...
desc	submemory_desc (const dims &adims, const dims &offsets)
	Constructs a sub-memory descriptor. More...
desc	reshape (const dims &adims)
	Constructs a memory descriptor by reshaping existing one.
size_t	get_size () const
	Returns the number of bytes required to allocate the memory described including the padding area. More...
bool	is_zero () const
	Returns true if the memory descriptor describes an empty memory.

Public Attributes
dnnl_memory_desc_t	data
	The underlying C API data structure.

Detailed Description

A memory descriptor.

Examples:

cnn_inference_f32.cpp, cnn_inference_int8.cpp, cnn_training_f32.cpp, cpu_cnn_training_bf16.cpp, cpu_rnn_inference_f32.cpp, cpu_rnn_inference_int8.cpp, getting_started.cpp, gpu_opencl_interop.cpp, memory_format_propagation.cpp, performance_profiling.cpp, and rnn_training_f32.cpp.

Constructor & Destructor Documentation

desc() [1/3]

dnnl::memory::desc::desc ( const dims &  adims, data_type  adata_type, format_tag  aformat_tag  )

inline

Constructs a memory descriptor.

Parameters

adims	Data dimensions
adata_type	Data precision/type.
aformat_tag	Data layout format tag.

desc() [2/3]

dnnl::memory::desc::desc ( const dims &  adims, data_type  adata_type, const dims &  astrides  )

inline

Constructs a memory descriptor by strides.

Parameters

adims	Data dimensions
adata_type	Data precision/type.
astrides	The strides for dimensions.

desc() [3/3]

dnnl::memory::desc::desc ( const dnnl_memory_desc_t &  adata )

inline

Constructs a memory descriptor from a C API data structure.

Parameters

adata

A C API dnnl_memory_desc_t structure.

Member Function Documentation

submemory_desc()

desc dnnl::memory::desc::submemory_desc ( const dims &  adims, const dims &  offsets  )

inline

Constructs a sub-memory descriptor.

Parameters

adims	Sizes of a sub-memory
offsets	Offsets of a sub-memory

Examples:

cpu_rnn_inference_f32.cpp, cpu_rnn_inference_int8.cpp, and rnn_training_f32.cpp.

get_size()

size_t dnnl::memory::desc::get_size ( ) const

inline

Returns the number of bytes required to allocate the memory described including the padding area.

Examples:

cpu_rnn_inference_f32.cpp, cpu_rnn_inference_int8.cpp, and performance_profiling.cpp.

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

• include/dnnl.hpp