diff options
Diffstat (limited to 'src/core/CL/cl_kernels/activation_layer_qa8.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/activation_layer_qa8.cl | 94 |
1 files changed, 75 insertions, 19 deletions
diff --git a/src/core/CL/cl_kernels/activation_layer_qa8.cl b/src/core/CL/cl_kernels/activation_layer_qa8.cl index 8f6a807613..cfb61376ca 100644 --- a/src/core/CL/cl_kernels/activation_layer_qa8.cl +++ b/src/core/CL/cl_kernels/activation_layer_qa8.cl @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016-2018 ARM Limited. + * Copyright (c) 2016-2019 ARM Limited. * * SPDX-License-Identifier: MIT * @@ -26,16 +26,6 @@ #define TYPE VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE) #define VEC_FLOAT VEC_DATA_TYPE(float, VEC_SIZE) -// Logistic Activation -inline TYPE logistic_op(TYPE x) -{ - VEC_FLOAT x_flt = CONVERT(x, VEC_FLOAT); - x_flt = round(x_flt - (float)O1_VAL) * ((float)S1_VAL); - x_flt = 1.f / (1.f + exp(-x_flt)); - - const TYPE x_u8 = CONVERT_SAT(round(x_flt / ((float)S1_VAL)) + (float)O1_VAL, TYPE); - return x_u8; -} // RELU Activation inline TYPE relu_op(TYPE x) { @@ -95,14 +85,14 @@ inline TYPE lu_brelu_op(TYPE x) * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] output_ptr Pointer to the destination image. Supported data types: same as @p input_ptr - * @param[in] output_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] output_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) - * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) - * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination image + * @param[out] output_ptr (Optional) Pointer to the destination image. Supported data types: same as @p input_ptr + * @param[in] output_stride_x (Optional) Stride of the destination image in X dimension (in bytes) + * @param[in] output_step_x (Optional) output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y (Optional) Stride of the destination image in Y dimension (in bytes) + * @param[in] output_step_y (Optional) output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z (Optional) Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z (Optional) output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes (Optional) The offset of the first element in the destination image */ __kernel void activation_layer_qa8( TENSOR3D_DECLARATION(input) @@ -131,3 +121,69 @@ __kernel void activation_layer_qa8( } #endif /* defined(ACT) */ + +#if defined(O2_VAL) && defined(S2_VAL) +#define OFFSET_OUT O2_VAL +#define SCALE_OUT S2_VAL +#else // defined(O2_VAL) && defined(S2_VAL) +#define OFFSET_OUT O1_VAL +#define SCALE_OUT S1_VAL +#endif // defined(O2_VAL) && defined(S2_VAL) + +/** This performs a Logistic activation function on QASYMM8 inputs. + * + * @note In order to perform the activation function "in-place", the pre-processor -DIN_PLACE must be passed at compile time + * + * @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=short + * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 + * @note A, B variables required by some activation functions are set using -DA_VAL= and -DB_VAL= respectively. + * @note Quantization scales of the input/output tensors are passed in with -DS1_VAL= and -DS2_VAL= respectively. + * @note Quantization offsets of the input/output tensors are passed in with -DO1_VAL= and -DO2_VAL= respectively. + * @note Quantized value of constant zero should be given as a preprocessor argument using -DCONST_0=value. e.g. -DCONST_0=128. + * + * @param[in] input_ptr Pointer to the source image. Supported data types: QASYMM8 + * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image + * @param[out] output_ptr (Optional) Pointer to the destination image. Supported data types: same as @p input_ptr + * @param[in] output_stride_x (Optional) Stride of the destination image in X dimension (in bytes) + * @param[in] output_step_x (Optional) output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y (Optional) Stride of the destination image in Y dimension (in bytes) + * @param[in] output_step_y (Optional) output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z (Optional) Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z (Optional) output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes (Optional) The offset of the first element in the destination image + */ +__kernel void activation_layer_logistic_qa8( + TENSOR3D_DECLARATION(input) +#ifndef IN_PLACE + , + TENSOR3D_DECLARATION(output) +#endif /* not IN_PLACE */ +) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); +#ifdef IN_PLACE + Tensor3D output = input; +#else /* IN_PLACE */ + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); +#endif /* IN_PLACE */ + + // Load data + TYPE data = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)input.ptr); + + VEC_FLOAT data_flt = CONVERT(data, VEC_FLOAT); + data_flt = round(data_flt - (float)O1_VAL) * ((float)S1_VAL); + data_flt = 1.f / (1.f + exp(-data_flt)); + + data = CONVERT_SAT(round(data_flt / ((float)SCALE_OUT)) + (float)OFFSET_OUT, TYPE); + + // Store result + VSTORE(VEC_SIZE) + (data, 0, (__global DATA_TYPE *)output.ptr); +} |