LRN¶

Overview¶

A primitive to perform local response normalization (LRN) across or within channels. More…

// structs

struct dnnl_lrn_desc_t;
struct dnnl::lrn_backward;
struct dnnl::lrn_forward;

// global functions

dnnl_status_t DNNL_API dnnl_lrn_forward_desc_init(
    dnnl_lrn_desc_t* lrn_desc,
    dnnl_prop_kind_t prop_kind,
    dnnl_alg_kind_t alg_kind,
    const dnnl_memory_desc_t* data_desc,
    dnnl_dim_t local_size,
    float alpha,
    float beta,
    float k
    );

dnnl_status_t DNNL_API dnnl_lrn_backward_desc_init(
    dnnl_lrn_desc_t* lrn_desc,
    dnnl_alg_kind_t alg_kind,
    const dnnl_memory_desc_t* diff_data_desc,
    const dnnl_memory_desc_t* data_desc,
    dnnl_dim_t local_size,
    float alpha,
    float beta,
    float k
    );

Detailed Documentation¶

A primitive to perform local response normalization (LRN) across or within channels.

Global Functions¶

dnnl_status_t DNNL_API dnnl_lrn_forward_desc_init(
    dnnl_lrn_desc_t* lrn_desc,
    dnnl_prop_kind_t prop_kind,
    dnnl_alg_kind_t alg_kind,
    const dnnl_memory_desc_t* data_desc,
    dnnl_dim_t local_size,
    float alpha,
    float beta,
    float k
    )

Initializes a descriptor for LRN forward propagation primitive.

Parameters:

lrn_desc	Output descriptor for a LRN primitive.
prop_kind	Propagation kind. Possible values are dnnl_forward_training and dnnl_forward_inference.
alg_kind	LRN algorithm kind: either dnnl_lrn_across_channels or dnnl_lrn_within_channel.
data_desc	Source and destination memory descriptor.
local_size	Regularization local size.
alpha	The alpha regularization parameter.
beta	The beta regularization parameter.
k	The k regularization parameter.

Returns:

dnnl_success on success and a status describing the error otherwise.

dnnl_status_t DNNL_API dnnl_lrn_backward_desc_init(
    dnnl_lrn_desc_t* lrn_desc,
    dnnl_alg_kind_t alg_kind,
    const dnnl_memory_desc_t* diff_data_desc,
    const dnnl_memory_desc_t* data_desc,
    dnnl_dim_t local_size,
    float alpha,
    float beta,
    float k
    )

Initializes a descriptor for LRN backward propagation primitive.