From 448a81fcec04333364a1e3266d5081596d3a0477 Mon Sep 17 00:00:00 2001 From: Georgios Pinitas Date: Thu, 21 Nov 2019 14:10:25 +0000 Subject: COMPMID-2805: Add QASYMM8_SIGNED support in NEGEMMLowpOutputStage Add support from requantizing down from S32 to Int8 with fixed point requantization. This involves the following: - Compute fixed point multiplication between each entry of input by result_fixedpoint_multiplier - Add bias to final result if bias tensor is not a nullptr - Round to nearest division by a power-of-two using result_shift - Add offset to each result - Clamp the value between the specified min and max bounds - Cast to int8 data type Change-Id: I641b3fac0833c568d8565ccb859bbc561a24c17d Signed-off-by: Georgios Pinitas Reviewed-on: https://review.mlplatform.org/c/2340 Comments-Addressed: Arm Jenkins Reviewed-by: Michele Di Giorgio Tested-by: Arm Jenkins --- ...ntizeDownInt32ToInt8ScaleByFixedPointKernel.cpp | 246 +++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 src/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp (limited to 'src/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp') diff --git a/src/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp b/src/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp new file mode 100644 index 0000000000..d24089d615 --- /dev/null +++ b/src/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp @@ -0,0 +1,246 @@ +/* + * Copyright (c) 2019 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.h" + +#include "arm_compute/core/AccessWindowStatic.h" +#include "arm_compute/core/Error.h" +#include "arm_compute/core/Helpers.h" +#include "arm_compute/core/ITensor.h" +#include "arm_compute/core/NEON/NEAsymm.h" +#include "arm_compute/core/TensorInfo.h" +#include "arm_compute/core/Types.h" +#include "arm_compute/core/Utils.h" +#include "arm_compute/core/Validate.h" +#include "arm_compute/core/Window.h" +#include "arm_compute/core/utils/misc/ShapeCalculator.h" + +#include +#include +#include + +namespace arm_compute +{ +namespace +{ +Status validate_arguments(const ITensorInfo *input, const ITensorInfo *bias, const ITensorInfo *output, int min, int max) +{ + ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::S32); + ARM_COMPUTE_RETURN_ERROR_ON(max > 127); + ARM_COMPUTE_RETURN_ERROR_ON(min < -128 || min > max); + + // Check biases if exist + if(bias != nullptr) + { + ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, bias); + ARM_COMPUTE_RETURN_ERROR_ON(bias->num_dimensions() > 1); + ARM_COMPUTE_RETURN_ERROR_ON(input->dimension(0) != bias->dimension(0)); + } + + if(output->total_size() != 0) + { + ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::QASYMM8_SIGNED); + ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(output, input); + } + + return Status{}; +} + +std::pair validate_and_configure_window(ITensorInfo *input, ITensorInfo *output) +{ + // Output auto initialization if not yet initialized + auto_init_if_empty(*output, input->clone()->set_data_type(DataType::QASYMM8_SIGNED)); + + // Configure kernel window + Window win = calculate_max_window(*input, Steps()); + + // NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel doesn't need padding so update_window_and_padding() can be skipped + Coordinates coord; + coord.set_num_dimensions(output->num_dimensions()); + output->set_valid_region(ValidRegion(coord, output->tensor_shape())); + + return std::make_pair(Status{}, win); +} +} // namespace + +template +void NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::run(const Window &window) +{ + const int32x4_t result_offset_after_shift_s32 = vdupq_n_s32(_result_offset_after_shift); + const int8x16_t min_s8 = vdupq_n_s8(static_cast(_min)); + const int8x16_t max_s8 = vdupq_n_s8(static_cast(_max)); + + ARM_COMPUTE_UNUSED(min_s8, max_s8); + + const int window_step_x = 16; + const auto window_start_x = static_cast(window.x().start()); + const auto window_end_x = static_cast(window.x().end()); + + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator in(_input, win_collapsed); + Iterator out(_output, win_collapsed); + if(_bias != nullptr) + { + Window win_biases; + win_biases.set(Window::DimX, Window::Dimension(0, 1, 1)); + win_biases.set(Window::DimY, Window::Dimension(0, 1, 1)); + + Iterator bias(_bias, win_biases); + execute_window_loop(win_collapsed, [&](const Coordinates &) + { + // Compute 16 elements per iteration + int x = window_start_x; + for(; x <= (window_end_x - window_step_x); x += window_step_x) + { + int32x4x4_t in_s32 = + { + { + vld1q_s32(reinterpret_cast(in.ptr()) + x + 0), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 4), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 8), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 12) + } + }; + + const int32x4x4_t bias_s32 = + { + { + vld1q_s32(reinterpret_cast(bias.ptr()) + x + 0), + vld1q_s32(reinterpret_cast(bias.ptr()) + x + 4), + vld1q_s32(reinterpret_cast(bias.ptr()) + x + 8), + vld1q_s32(reinterpret_cast(bias.ptr()) + x + 12) + } + }; + + // Add the bias to GEMM's result + in_s32.val[0] = vaddq_s32(in_s32.val[0], bias_s32.val[0]); + in_s32.val[1] = vaddq_s32(in_s32.val[1], bias_s32.val[1]); + in_s32.val[2] = vaddq_s32(in_s32.val[2], bias_s32.val[2]); + in_s32.val[3] = vaddq_s32(in_s32.val[3], bias_s32.val[3]); + + vst1q_s8(reinterpret_cast(out.ptr() + x), + finalize_quantization(in_s32, _result_fixedpoint_multiplier, _result_shift, result_offset_after_shift_s32, min_s8, max_s8)); + } + + // Compute left-over elements + for(; x < window_end_x; ++x) + { + const int32_t bias_value = *(reinterpret_cast(bias.ptr()) + x); + int32_t in_value = *(reinterpret_cast(in.ptr()) + x); + + // Add bias + in_value += bias_value; + // Finalize and store the result + *reinterpret_cast(out.ptr() + x) = finalize_quantization(in_value, _result_fixedpoint_multiplier, _result_shift, _result_offset_after_shift, + static_cast(_min), static_cast(_max)); + } + }, + in, out, bias); + } + else + { + execute_window_loop(win_collapsed, [&](const Coordinates &) + { + // Compute 16 elements per iteration + int x = window_start_x; + for(; x <= (window_end_x - window_step_x); x += window_step_x) + { + int32x4x4_t in_s32 = + { + { + vld1q_s32(reinterpret_cast(in.ptr()) + x + 0), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 4), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 8), + vld1q_s32(reinterpret_cast(in.ptr()) + x + 12) + } + }; + + vst1q_s8(reinterpret_cast(out.ptr() + x), + finalize_quantization(in_s32, _result_fixedpoint_multiplier, _result_shift, result_offset_after_shift_s32, min_s8, max_s8)); + } + + // Compute left-over elements + for(; x < window_end_x; ++x) + { + const int32_t in_value = *(reinterpret_cast(in.ptr()) + x); + + // Finalize and store the result + *reinterpret_cast(out.ptr() + x) = finalize_quantization(in_value, _result_fixedpoint_multiplier, _result_shift, _result_offset_after_shift, + static_cast(_min), static_cast(_max)); + } + }, + in, out); + } +} + +NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel() + : _func(nullptr), _input(nullptr), _bias(nullptr), _output(nullptr), _result_fixedpoint_multiplier(0), _result_shift(0), _result_offset_after_shift(0), _min(0), _max(0) +{ +} + +void NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::configure(const ITensor *input, const ITensor *bias, ITensor *output, int result_fixedpoint_multiplier, int result_shift, + int result_offset_after_shift, int min, int max) +{ + // Perform validate step + ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); + ARM_COMPUTE_ERROR_THROW_ON(validate_arguments(input->info(), (bias != nullptr) ? bias->info() : nullptr, output->info(), min, max)); + + _input = input; + _bias = bias; + _output = output; + _result_fixedpoint_multiplier = result_fixedpoint_multiplier; + _result_shift = result_shift; + _result_offset_after_shift = result_offset_after_shift; + _min = min; + _max = max; + + // Configure kernel window + auto win_config = validate_and_configure_window(input->info(), output->info()); + ARM_COMPUTE_ERROR_THROW_ON(win_config.first); + INEKernel::configure(win_config.second); + + // Check if we need to clamp the result using min and max + const bool is_bounded_relu = ((min != max) && !(min == -128 && max == 127)); + _func = is_bounded_relu ? &NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::run : &NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::run; +} + +Status NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::validate(const ITensorInfo *input, const ITensorInfo *bias, const ITensorInfo *output, int min, int max) +{ + ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); + ARM_COMPUTE_RETURN_ON_ERROR(validate_arguments(input, bias, output, min, max)); + ARM_COMPUTE_RETURN_ON_ERROR(validate_and_configure_window(input->clone().get(), output->clone().get()).first); + + return Status{}; +} + +void NEGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel::run(const Window &window, const ThreadInfo &info) +{ + ARM_COMPUTE_UNUSED(info); + ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); + ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); + + (this->*_func)(window); +} +} // namespace arm_compute \ No newline at end of file -- cgit v1.2.1