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paddlepaddle--paddle/test/cpp/phi/api/scale_api.h
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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2021 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.
#pragma once
#include "glog/logging.h"
#include "paddle/common/flags.h"
#include "paddle/phi/api/include/tensor.h"
#include "paddle/phi/api/lib/kernel_dispatch.h"
#include "paddle/phi/api/lib/utils/allocator.h"
#include "paddle/phi/common/int_array.h"
#include "paddle/phi/common/scalar.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/core/meta_tensor.h"
#include "paddle/phi/infermeta/unary.h"
#include "paddle/phi/kernels/scale_kernel.h"
COMMON_DECLARE_int32(low_precision_op_list);
namespace paddle {
namespace experimental {
Tensor scale_kernel_context(const Tensor& x,
const Scalar& scale,
const Scalar& bias,
bool bias_after_scale) {
Backend kernel_backend = Backend::UNDEFINED;
DataLayout kernel_layout = DataLayout::UNDEFINED;
DataType kernel_data_type = DataType::UNDEFINED;
if (kernel_backend == Backend::UNDEFINED ||
kernel_layout == DataLayout::UNDEFINED ||
kernel_data_type == DataType::UNDEFINED) {
auto kernel_key_set = ParseKernelKeyByInputArgs(x);
auto kernel_key = kernel_key_set.GetHighestPriorityKernelKey();
if (kernel_backend == Backend::UNDEFINED) {
kernel_backend = kernel_key.backend();
}
if (kernel_layout == DataLayout::UNDEFINED) {
kernel_layout = kernel_key.layout();
}
if (kernel_data_type == DataType::UNDEFINED) {
kernel_data_type = kernel_key.dtype();
}
}
auto kernel_result = phi::KernelFactory::Instance().SelectKernelOrThrowError(
"scale", {kernel_backend, kernel_layout, kernel_data_type});
const auto& kernel = kernel_result.kernel;
if (FLAGS_low_precision_op_list) {
phi::KernelFactory::Instance().AddToLowPrecisionKernelList(
"scale", kernel_data_type);
}
VLOG(6) << "scale API kernel key: [" << kernel_backend << ", "
<< kernel_layout << ", " << kernel_data_type << "]";
VLOG(6) << "scale API kernel: " << kernel;
auto* dev_ctx = GetDeviceContextByBackend(kernel_backend);
auto kernel_context = phi::KernelContext(dev_ctx);
auto dense_x = std::dynamic_pointer_cast<phi::DenseTensor>(x.impl());
kernel_context.EmplaceBackInput(dense_x.get());
kernel_context.EmplaceBackAttr(scale);
kernel_context.EmplaceBackAttr(bias);
kernel_context.EmplaceBackAttr(bias_after_scale);
auto dense_out = std::make_shared<phi::DenseTensor>();
phi::MetaTensor meta_out(dense_out.get());
phi::UnchangedInferMeta(*dense_x, &meta_out);
kernel_context.EmplaceBackOutput(dense_out.get());
Tensor out;
out.set_impl(dense_out);
kernel(&kernel_context);
return out;
}
static void ScaleCPU(DataType kernel_dtype,
const phi::CPUContext& dev_ctx,
const phi::DenseTensor& x,
const Scalar& scale,
const Scalar& bias,
bool bias_after_scale,
phi::DenseTensor* dense_out) {
switch (kernel_dtype) {
case phi::DataType::FLOAT64: {
phi::ScaleKernel<double>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::FLOAT32: {
phi::ScaleKernel<float>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::BFLOAT16: {
phi::ScaleKernel<phi::dtype::bfloat16>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT64: {
phi::ScaleKernel<int64_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT32: {
phi::ScaleKernel<int32_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT16: {
phi::ScaleKernel<int16_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT8: {
phi::ScaleKernel<int8_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::UINT8: {
phi::ScaleKernel<uint8_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
default: {
PADDLE_THROW(common::errors::Fatal(
"Detected unsupported data type."
"Only Float64, Float32, BFloat16, Int64, Int32, Int16, Int8, UInt8 "
"are supported for now."));
break;
}
}
}
#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
static void ScaleGPU(DataType kernel_dtype,
const phi::GPUContext& dev_ctx,
const phi::DenseTensor& x,
const Scalar& scale,
const Scalar& bias,
bool bias_after_scale,
phi::DenseTensor* dense_out) {
switch (kernel_dtype) {
case phi::DataType::FLOAT64: {
phi::ScaleKernel<double>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::FLOAT32: {
phi::ScaleKernel<float>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::FLOAT16: {
phi::ScaleKernel<phi::dtype::float16>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT64: {
phi::ScaleKernel<int64_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT32: {
phi::ScaleKernel<int32_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT16: {
phi::ScaleKernel<int16_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::INT8: {
phi::ScaleKernel<int8_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
case phi::DataType::UINT8: {
phi::ScaleKernel<uint8_t>(
dev_ctx, x, scale, bias, bias_after_scale, dense_out);
break;
}
default: {
PADDLE_THROW(common::errors::Fatal(
"Detected unsupported data type."
"Only Float64, Float32, Float16, Int64, Int32, Int16, Int8, UInt8 "
"are "
"supported for now."));
break;
}
}
}
#endif
Tensor scale_switch_case(const Tensor& x,
const Scalar& scale,
const Scalar& bias,
bool bias_after_scale) {
Backend kernel_backend = Backend::UNDEFINED;
DataLayout kernel_layout = DataLayout::UNDEFINED;
DataType kernel_data_type = DataType::UNDEFINED;
if (kernel_backend == Backend::UNDEFINED ||
kernel_layout == DataLayout::UNDEFINED ||
kernel_data_type == DataType::UNDEFINED) {
auto kernel_key_set = ParseKernelKeyByInputArgs(x);
auto kernel_key = kernel_key_set.GetHighestPriorityKernelKey();
if (kernel_backend == Backend::UNDEFINED) {
kernel_backend = kernel_key.backend();
}
if (kernel_layout == DataLayout::UNDEFINED) {
kernel_layout = kernel_key.layout();
}
if (kernel_data_type == DataType::UNDEFINED) {
kernel_data_type = kernel_key.dtype();
}
}
auto kernel_result = phi::KernelFactory::Instance().SelectKernelOrThrowError(
"scale", {kernel_backend, kernel_layout, kernel_data_type});
const auto& kernel = kernel_result.kernel;
if (FLAGS_low_precision_op_list) {
phi::KernelFactory::Instance().AddToLowPrecisionKernelList(
"scale", kernel_data_type);
}
VLOG(6) << "scale API kernel key: [" << kernel_backend << ", "
<< kernel_layout << ", " << kernel_data_type << "]";
VLOG(6) << "scale API kernel: " << kernel;
auto* dev_ctx = GetDeviceContextByBackend(kernel_backend);
auto dense_x = std::dynamic_pointer_cast<phi::DenseTensor>(x.impl());
auto dense_out = std::make_shared<phi::DenseTensor>();
phi::MetaTensor meta_out(dense_out.get());
phi::UnchangedInferMeta(*dense_x, &meta_out);
Tensor out;
out.set_impl(dense_out);
switch (kernel_backend) {
case Backend::CPU:
ScaleCPU(kernel_data_type,
static_cast<const phi::CPUContext&>(*dev_ctx),
*dense_x,
scale,
bias,
bias_after_scale,
dense_out.get());
break;
#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
case Backend::GPU:
ScaleGPU(kernel_data_type,
static_cast<const phi::GPUContext&>(*dev_ctx),
*dense_x,
scale,
bias,
bias_after_scale,
dense_out.get());
break;
#endif
default:
PADDLE_THROW(common::errors::Fatal(
"Detected unsupported backend."
"Only CPU and CUDA Backend are supported for now."
"Please double check if your backend falls into the above two "
"categories."));
}
return out;
}
} // namespace experimental
} // namespace paddle