Intel® oneAPI Deep Neural Network Developer Guide and Reference
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Softmax
Overview
A primitive to perform softmax. More…
// structs struct dnnl::softmax_backward; struct dnnl::softmax_forward; // global functions dnnl_status_t DNNL_API dnnl_softmax_forward_primitive_desc_create( dnnl_primitive_desc_t* primitive_desc, dnnl_engine_t engine, dnnl_prop_kind_t prop_kind, dnnl_alg_kind_t alg_kind, const_dnnl_memory_desc_t src_desc, const_dnnl_memory_desc_t dst_desc, int softmax_axis, const_dnnl_primitive_attr_t attr ); dnnl_status_t DNNL_API dnnl_softmax_backward_primitive_desc_create( dnnl_primitive_desc_t* primitive_desc, dnnl_engine_t engine, dnnl_alg_kind_t alg_kind, const_dnnl_memory_desc_t diff_src_desc, const_dnnl_memory_desc_t diff_dst_desc, const_dnnl_memory_desc_t dst_desc, int softmax_axis, const_dnnl_primitive_desc_t hint_fwd_pd, const_dnnl_primitive_attr_t attr );
Detailed Documentation
A primitive to perform softmax.
See also:
Softmax in developer guide
Global Functions
dnnl_status_t DNNL_API dnnl_softmax_forward_primitive_desc_create( dnnl_primitive_desc_t* primitive_desc, dnnl_engine_t engine, dnnl_prop_kind_t prop_kind, dnnl_alg_kind_t alg_kind, const_dnnl_memory_desc_t src_desc, const_dnnl_memory_desc_t dst_desc, int softmax_axis, const_dnnl_primitive_attr_t attr )
Creates a primitive descriptor for a softmax forward propagation primitive.
Parameters:
primitive_desc  |  
        Output primitive descriptor.  |  
       
engine  |  
        Engine to use.  |  
       
prop_kind  |  
        Propagation kind. Possible values are dnnl_forward_training and dnnl_forward_inference.  |  
       
alg_kind  |  
        Softmax algorithm kind: either dnnl_softmax_accurate, or dnnl_softmax_log.  |  
       
src_desc  |  
        Source memory descriptor.  |  
       
dst_desc  |  
        Destination memory descriptor.  |  
       
softmax_axis  |  
        Axis over which softmax is computed.  |  
       
attr  |  
        Primitive attributes (can be NULL).  |  
       
Returns:
dnnl_success on success and a status describing the error otherwise.
dnnl_status_t DNNL_API dnnl_softmax_backward_primitive_desc_create( dnnl_primitive_desc_t* primitive_desc, dnnl_engine_t engine, dnnl_alg_kind_t alg_kind, const_dnnl_memory_desc_t diff_src_desc, const_dnnl_memory_desc_t diff_dst_desc, const_dnnl_memory_desc_t dst_desc, int softmax_axis, const_dnnl_primitive_desc_t hint_fwd_pd, const_dnnl_primitive_attr_t attr )
Creates a primitive descriptor for a softmax backward propagation primitive.
Parameters:
primitive_desc  |  
        Output primitive descriptor.  |  
       
engine  |  
        Engine to use.  |  
       
alg_kind  |  
        Softmax algorithm kind: either dnnl_softmax_accurate, or dnnl_softmax_log.  |  
       
diff_src_desc  |  
        Diff source memory descriptor.  |  
       
diff_dst_desc  |  
        Diff destination memory descriptor.  |  
       
dst_desc  |  
        Destination memory descriptor.  |  
       
softmax_axis  |  
        Axis over which softmax is computed.  |  
       
hint_fwd_pd  |  
        Primitive descriptor for a respective forward propagation primitive.  |  
       
attr  |  
        Primitive attributes (can be NULL).  |  
       
Returns:
dnnl_success on success and a status describing the error otherwise.