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paddlepaddle--paddle/paddle/phi/kernels/gpu/set_value_kernel.cu
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// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "paddle/phi/kernels/set_value_kernel.h"
#include <chrono>
#include <iostream>
#include <type_traits>
#include "paddle/phi/backends/gpu/gpu_context.h"
#include "paddle/phi/common/int_array.h"
#include "paddle/phi/common/scalar.h"
#include "paddle/phi/core/dense_tensor.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/core/tensor_utils.h"
#include "paddle/phi/kernels/empty_kernel.h"
#include "paddle/phi/kernels/expand_kernel.h"
#include "paddle/phi/kernels/funcs/math_function.h"
#include "paddle/phi/kernels/funcs/slice_utils.h"
#include "paddle/phi/kernels/strided_copy_kernel.h"
namespace phi {
template <typename T, typename Context>
void SetTensorValueKernel(const Context& dev_ctx,
const DenseTensor& in,
const DenseTensor& value,
const IntArray& starts,
const IntArray& ends,
const IntArray& steps,
const std::vector<int64_t>& axes,
const std::vector<int64_t>& decrease_axes,
const std::vector<int64_t>& none_axes,
DenseTensor* out) {
if (in.numel() == 0) {
dev_ctx.template Alloc<T>(out);
return;
}
auto in_dims = in.dims();
auto meta = in.meta();
std::vector<int64_t> starts_local = starts.GetData();
std::vector<int64_t> ends_local = ends.GetData();
std::vector<int64_t> steps_local = steps.GetData();
funcs::CheckAndUpdateSliceAttrs(
in_dims, axes, &starts_local, &ends_local, &steps_local);
std::vector<int64_t> output_dims = vectorize<int64_t>(in.dims());
std::vector<int64_t> output_stride = vectorize<int64_t>(in.strides());
int64_t output_offset = static_cast<int64_t>(in.offset());
for (size_t i = 0; i < axes.size(); ++i) {
int64_t axis_size = in.dims()[axes[i]];
if (axis_size < 0) {
continue;
}
int64_t step_size = std::abs(steps_local[i]);
auto out_dim =
(std::abs(ends_local[i] - starts_local[i]) + step_size - 1) / step_size;
output_offset += static_cast<int64_t>(
starts_local[i] * output_stride[axes[i]] * SizeOf(out->dtype()));
output_dims[axes[i]] = out_dim;
output_stride[axes[i]] *= steps_local[i];
}
// generate new shape
std::vector<int64_t> new_out_shape;
std::vector<int64_t> new_out_stride;
funcs::GetDecreasedDimsAndStrides(output_dims,
output_stride,
decrease_axes,
none_axes,
&new_out_shape,
&new_out_stride);
if (product(make_ddim(new_out_shape)) <= 0) {
// 0-size tensor, no need to copy
out->ResetHolder(in.Holder());
out->ShareInplaceVersionCounterWith(in);
return;
}
funcs::CheckIsDimsMatch(make_ddim(new_out_shape), value.dims());
if (new_out_shape.empty()) new_out_shape.push_back(1);
DenseTensor expand_tensor;
if (value.numel() == 1) {
expand_tensor = value;
expand_tensor.Resize({1});
} else if (product(value.dims()) == product(make_ddim(new_out_shape))) {
expand_tensor = value;
if (value.dims() != make_ddim(new_out_shape)) {
expand_tensor.Resize(new_out_shape);
}
} else {
auto value_dims = vectorize<int64_t>(value.dims());
DenseTensor value_tensor = Empty<T>(dev_ctx, IntArray{value_dims});
value_tensor = value;
auto it = value_dims.begin();
while (it != value_dims.end() && *it == 1) {
it = value_dims.erase(it);
}
if (value_dims.empty()) value_dims.push_back(1);
auto v_dims = make_ddim(value_dims);
auto out_dims = make_ddim(new_out_shape);
value_tensor.Resize(v_dims);
if (funcs::CheckIsLastDimsMatch(v_dims, out_dims)) {
expand_tensor = value_tensor;
} else {
expand_tensor = Empty<T>(dev_ctx, IntArray{new_out_shape});
ExpandKernel<T, Context>(
dev_ctx, value_tensor, IntArray{new_out_shape}, &expand_tensor);
}
}
out->ResetHolder(in.Holder());
out->ShareInplaceVersionCounterWith(in);
if (starts_local.empty() && ends_local.empty() && steps_local.empty()) {
if (expand_tensor.numel() != out->numel()) {
ExpandKernel<T, Context>(
dev_ctx, expand_tensor, IntArray{new_out_shape}, out);
} else {
Copy<Context>(dev_ctx, expand_tensor, dev_ctx.GetPlace(), false, out);
}
} else {
StridedCopyKernel<T, Context>(dev_ctx,
expand_tensor,
new_out_shape,
new_out_stride,
output_offset,
out);
}
out->set_meta(meta);
}
template <typename T, typename Context>
void SetValueKernel(const Context& dev_ctx,
const DenseTensor& in,
const IntArray& starts,
const IntArray& ends,
const IntArray& steps,
const std::vector<int64_t>& axes,
const std::vector<int64_t>& decrease_axes,
const std::vector<int64_t>& none_axes,
const std::vector<int64_t>& shape,
const std::vector<Scalar>& values,
DenseTensor* out) {
std::vector<T> assign_values;
assign_values.reserve(values.size());
for (const auto& val : values) {
assign_values.push_back(val.to<T>());
}
bool is_full_set_one_value = false;
std::vector<int64_t> starts_local = starts.GetData();
std::vector<int64_t> ends_local = ends.GetData();
std::vector<int64_t> steps_local = steps.GetData();
if (starts_local.empty() && ends_local.empty() && steps_local.empty() &&
shape.size() == 1 && shape[0] == 1 && assign_values.size() == 1) {
is_full_set_one_value = true;
}
if (is_full_set_one_value && !std::is_same<T, complex64>::value &&
!std::is_same<T, complex128>::value) {
dev_ctx.template Alloc<T>(out);
funcs::set_constant(dev_ctx, out, static_cast<float>(assign_values[0]));
return;
}
DenseTensor value_tensor = Empty<T>(dev_ctx, shape);
TensorFromVector(assign_values, dev_ctx, &value_tensor);
value_tensor.Resize(shape);
SetTensorValueKernel<T, Context>(dev_ctx,
in,
value_tensor,
starts,
ends,
steps,
axes,
decrease_axes,
none_axes,
out);
}
} // namespace phi
PD_REGISTER_KERNEL(set_value,
GPU,
ALL_LAYOUT,
phi::SetValueKernel,
float,
double,
int,
int64_t,
bool,
int16_t,
uint8_t,
int8_t,
phi::float16,
phi::bfloat16,
phi::complex64,
phi::complex128) {}
PD_REGISTER_KERNEL(set_value_with_tensor,
GPU,
ALL_LAYOUT,
phi::SetTensorValueKernel,
float,
double,
int,
int64_t,
bool,
int16_t,
uint8_t,
int8_t,
phi::float16,
phi::bfloat16,
phi::complex64,
phi::complex128) {}