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/*
* Copyright (c) 2017-2020 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/GLES_COMPUTE/kernels/GCDropoutLayerKernel.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/GLES_COMPUTE/GCHelpers.h"
#include "arm_compute/core/GLES_COMPUTE/GCKernelLibrary.h"
#include "arm_compute/core/GLES_COMPUTE/IGCTensor.h"
#include "arm_compute/core/GLES_COMPUTE/OpenGLES.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/core/Validate.h"
#include "support/StringSupport.h"
#include <cmath>
#include <random>
#include <tuple>
using namespace arm_compute;
GCDropoutLayerKernel::GCDropoutLayerKernel()
: _input(nullptr), _mask(nullptr), _output(nullptr), _num_elems_processed_per_iteration(0)
{
}
void GCDropoutLayerKernel::configure(const IGCTensor *input, IGCTensor *mask, IGCTensor *output, float ratio, bool forward)
{
ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::F16, DataType::F32);
ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(input, mask, output);
_input = input;
_mask = mask;
_output = output;
std::set<std::string> build_opts;
std::string dt_name = (input->info()->data_type() == DataType::F32) ? "DATA_TYPE_FP32" : "DATA_TYPE_FP16";
std::string fporbp = forward ? "FORWARD" : "BACKWARD";
std::random_device rd;
std::mt19937 mt(rd());
std::uniform_real_distribution<float> dist(0.f, 1.f);
build_opts.emplace("#define LOCAL_SIZE_X " + support::cpp11::to_string(1));
build_opts.emplace("#define LOCAL_SIZE_Y " + support::cpp11::to_string(1));
build_opts.emplace("#define LOCAL_SIZE_Z " + support::cpp11::to_string(1));
build_opts.emplace("#define RATIO " + support::cpp11::to_string(ratio));
build_opts.emplace("#define SCALE " + support::cpp11::to_string(1. / (1. - ratio)));
build_opts.emplace("#define SEED " + support::cpp11::to_string(dist(mt)));
build_opts.emplace("#define " + dt_name);
build_opts.emplace("#define " + fporbp);
_num_elems_processed_per_iteration = 4 / input->info()->element_size();
// Create kernel
_kernel = static_cast<GCKernel>(GCKernelLibrary::get().create_kernel("dropout", build_opts));
// Configure kernel window
Window win = calculate_max_window(*input->info(), Steps(_num_elems_processed_per_iteration));
output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape()));
IGCKernel::configure(win);
}
void GCDropoutLayerKernel::run(const Window &window)
{
ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
ARM_COMPUTE_ERROR_ON_MISMATCHING_WINDOWS(IGCKernel::window(), window);
_kernel.use();
Window slice = window.first_slice_window_3D();
do
{
unsigned int idx = 0;
add_3D_tensor_argument(idx, _input, 1, slice);
add_3D_tensor_argument(idx, _mask, 2, slice);
add_3D_tensor_argument(idx, _output, 3, slice);
_kernel.update_shader_params();
enqueue(*this, slice);
}
while(window.slide_window_slice_3D(slice));
}
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