TBE CPU Autovectorization

FP8/16/32 Autovec Implementation Methods

template<typename InType, typename IndexType, typename OffsetType, typename OutType> static bool ALWAYS_INLINE EmbeddingSpMDM_autovec (const int64_t block_size, const int64_t output_size, const int64_t index_size, const int64_t data_size, const InType *input, const IndexType *indices, const OffsetType *offsets_or_lengths, const float *weights, bool normalize_by_lengths, OutType *out, const bool is_weight_positional, const bool use_offsets, const int64_t output_stride, const int64_t input_stride, const bool scale_bias_last, const bool no_bag)

Autovectorized version of method EmbeddingSpMDM_ref for FP32 weight type.

Template Parameters:

• InType – input data type (uint8_t is used)

• IndexType – index data type (int64_t is used)

• OffsetType – offset data type (int32_t is used)

• OutType – output data type (float is used)

Parameters:

• block_size – Number of elements in a block (int64_t)

• output_size – Number of elements in output (int64_t)

• index_size – Number of elements in index (int64_t)

• data_size – Number of elements in data (int64_t)

• input – Address of input (InType*)

• indices – Address of index (IndexType*)

• offsets_or_lengths – Address of offset (OffsetType*)

• weights – Weights of sum; optional, can be null for non-weighted sum (float*)

• normalize_by_lengths – Whether or not to normalize by lengths (bool)

• out – Address of output (OutType*)

• is_weight_positional – If true, weight is positional; set to false for FP32 autovec implementation (bool)

• use_offsets – If true, will use offsets instead of lengths; set to true for FP32 autovec implementation (bool)

• output_stride – If -1, output_stride is same as block_size; set to -1 for FP32 autovec implementation (int64_t)

• input_stride – If -1, input_stride is same as block_size; set to -1 for FP32 autovec implementation (int64_t)

• scale_bias_last – If true, scale and bias appear at end of each row; set to true for FP32 autovec implementation (bool)

• no_bag – If true, no embedding bag; set to false for FP32 autovec implementation (bool)

template<typename InType>
static int64_t stride_SpMDMWithStrides(int64_t block_size, bool scale_bias_last)