struct dnnl::reorder::primitive

Intel® oneAPI Deep Neural Network Developer Guide and Reference

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ID 768875

Date 3/31/2025

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struct dnnl::reorder::primitive_desc

Overview

Primitive descriptor for a reorder primitive. More…


#include <dnnl.hpp>

struct primitive_desc: public dnnl::primitive_desc_base
{
    // construction

    primitive_desc();

    primitive_desc(
        const engine& src_engine,
        const memory::desc& src_md,
        const engine& dst_engine,
        const memory::desc& dst_md,
        const primitive_attr& attr = default_attr(),
        bool allow_empty = false
        );

    primitive_desc(
        const memory& src,
        const memory& dst,
        const primitive_attr& attr = default_attr(),
        bool allow_empty = false
        );

    primitive_desc(dnnl_primitive_desc_t pd);

    // methods

    engine get_src_engine() const;
    engine get_dst_engine() const;
    memory::desc src_desc() const;
    memory::desc dst_desc() const;
    primitive_desc_base();
    primitive_desc_base();
    primitive_desc_base();
    primitive_desc_base();
};

Inherited Members


public:
    // methods

    handle<T, traits>& operator = (const handle<T, traits>&);
    handle<T, traits>& operator = (handle<T, traits>&&);
    void reset(T t, bool weak = false);
    T get(bool allow_empty = false) const;
    operator T () const;
    operator bool () const;
    bool operator == (const handle<T, traits>& other) const;
    bool operator != (const handle& other) const;
    engine get_engine() const;
    const char* impl_info_str() const;
    memory::dim query_s64(query what) const;
    memory::dims get_strides() const;
    memory::dims get_dilations() const;
    memory::dims get_padding_l() const;
    memory::dims get_padding_r() const;
    float get_epsilon() const;

    template <typename T = unsigned>
    T get_flags() const;

    dnnl::algorithm get_algorithm() const;
    float get_alpha() const;
    float get_beta() const;
    int get_axis() const;
    memory::dim get_local_size() const;
    float get_k() const;
    float get_p() const;
    std::vector<float> get_factors() const;
    dnnl::algorithm get_cell_kind() const;
    dnnl::rnn_direction get_direction() const;
    dnnl::algorithm get_activation_kind() const;
    memory::dims get_kernel() const;
    memory::dim get_group_size() const;
    dnnl::prop_kind get_prop_kind() const;
    memory::desc query_md(query what, int idx = 0) const;
    memory::desc src_desc(int idx) const;
    memory::desc dst_desc(int idx) const;
    memory::desc weights_desc(int idx) const;
    memory::desc diff_src_desc(int idx) const;
    memory::desc diff_dst_desc(int idx) const;
    memory::desc diff_weights_desc(int idx) const;
    memory::desc src_desc() const;
    memory::desc dst_desc() const;
    memory::desc weights_desc() const;
    memory::desc diff_src_desc() const;
    memory::desc diff_dst_desc() const;
    memory::desc diff_weights_desc() const;
    memory::desc workspace_desc() const;
    memory::desc scratchpad_desc() const;
    engine scratchpad_engine() const;
    primitive_attr get_primitive_attr() const;
    dnnl::primitive::kind get_kind() const;
    std::vector<uint8_t> get_cache_blob_id() const;

Detailed Documentation

Primitive descriptor for a reorder primitive.

Construction


primitive_desc()

Default constructor. Produces an empty object.


primitive_desc(
    const engine& src_engine,
    const memory::desc& src_md,
    const engine& dst_engine,
    const memory::desc& dst_md,
    const primitive_attr& attr = default_attr(),
    bool allow_empty = false
    )

Constructs a primitive descriptor for reorder primitive.

NOTE:

If allow_empty is true, the constructor does not throw if a primitive descriptor cannot be created.

Parameters:

src_engine	Engine on which the source memory object will be located.
src_md	Source memory descriptor.
dst_engine	Engine on which the destination memory object will be located.
dst_md	Destination memory descriptor.
attr	Primitive attributes to use. Attributes are optional and default to empty attributes.
allow_empty	A flag signifying whether construction is allowed to fail without throwing an exception. In this case an empty object will be produced. This flag is optional and defaults to false.


primitive_desc(
    const memory& src,
    const memory& dst,
    const primitive_attr& attr = default_attr(),
    bool allow_empty = false
    )

Constructs a primitive descriptor for reorder primitive.

Parameters:

src	Source memory object. It is used to obtain the source memory descriptor and engine.
dst	Destination memory object. It is used to obtain the destination memory descriptor and engine.
attr	Primitive attributes to use. Attributes are optional and default to empty attributes.
allow_empty	A flag signifying whether construction is allowed to fail without throwing an exception. In this case an empty object will be produced. This flag is optional and defaults to false.


primitive_desc(dnnl_primitive_desc_t pd)

Constructs a primitive descriptor for reorder primitive from a C API primitive descriptor which must have a matching kind.

Parameters:

pd	C API primitive descriptor for reorder primitive.

Methods


engine get_src_engine() const

Returns the engine on which the source memory is allocated.

Returns:

The engine on which the source memory is allocated.


engine get_dst_engine() const

Returns the engine on which the destination memory is allocated.

Returns:

The engine on which the destination memory is allocated.


memory::desc src_desc() const

Returns a source memory descriptor.

Returns:

Source memory descriptor.

A zero memory descriptor if the primitive does not have a source parameter.


memory::desc dst_desc() const

Returns a destination memory descriptor.

Returns:

Destination memory descriptor.

A zero memory descriptor if the primitive does not have a destination parameter.


primitive_desc_base()

Default constructor. Produces an empty object.


primitive_desc_base()

Constructs a primitive descriptor base object from a clone of a C API primitive descriptor after verifying that it is what the caller expects.

NOTE:

The prim_kind should map to a primitive that does not have different values of propagation kind (e.g. dnnl::binary).

NOTE:

Primitive descriptor base constructed this way does not support next_impl() (will throw).

Parameters:

pd	C API primitive descriptor to clone.
prim_kind	Expected primitive kind.


primitive_desc_base()

Constructs a primitive descriptor base object from a clone of a C API primitive descriptor after verifying that it is what the caller expects.

NOTE:

Primitive descriptor base constructed this way does not support next_impl() (will throw).

Parameters:

pd	C API primitive descriptor to clone.
prim_kind	Expected primitive kind.
aprop_kind	Expected propagation kind.


primitive_desc_base()

Constructs a primitive descriptor base object from a clone of a C API primitive descriptor after verifying that it is what the caller expects.

NOTE:

Primitive descriptor base constructed this way does not support next_impl() (will throw).

Parameters:

pd	C API primitive descriptor to clone.
prim_kind	Expected primitive kind.
prop_kind1	Expected propagation kind (option 1).
prop_kind2	Expected propagation kind (option 2). This value is checked if the check with `prop_kind1` fails.

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Intel® oneAPI Deep Neural Network Developer Guide and Reference

struct dnnl::reorder::primitive_desc

Overview

Detailed Documentation