[Pten]Refactor the Elementwise_add Kernel #37043
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chenwhql reviewed Nov 10, 2021
| int axis = PackTensorsIntoVector<T>(ctx, &ins, &outs); | ||
| LaunchElementwiseCudaKernel<ElementwiseType::kBinary, T, T>( | ||
| cuda_ctx, ins, &outs, axis, AddFunctor<T>()); | ||
| auto* x = ctx.Input<framework::LoDTensor>("X"); |
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这个函数是不是可以移除了，直接复用下面paddle/fluid/operators/elementwise/elementwise_add_op.h中的kernel，在注册时，给cuda注册一份就可以
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| #include "paddle/fluid/framework/pten_utils.h" | ||
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| // only can include the headers in paddle/top/api dirs |
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注释目录需要更改，现在应该是paddle/pten/include
| #include "paddle/fluid/platform/gpu_info.h" | ||
| #include "paddle/fluid/platform/transform.h" | ||
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| // only can include the headers in paddle/top/api dirs |
| is_run_common_broadcast); | ||
| } | ||
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| inline int GetElementwiseIndex(const int *x_dims_array, const int max_dim, |
| } | ||
| std::vector<const pten::DenseTensor *> pt_inputs; | ||
| std::vector<pten::DenseTensor *> pt_outputs; | ||
| // *_tmp for cache DenseTensor |
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可以加TODO注释说明是DenseTensor暂不支持拷贝构造导致需要这样写？后续会优化？
| cc_library(utils_cpu SRCS utils.cc DEPS dense_tensor kernel_context kernel_factory memory convert_utils) | ||
| cc_library(manipulation_cpu SRCS manipulation.cc DEPS dense_tensor kernel_context kernel_factory utils_cpu unary) | ||
| cc_library(nn_cpu SRCS nn.cc DEPS dense_tensor kernel_context kernel_factory blas eigen_function) | ||
| add_subdirectory(funcs) |
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可以将原来的functions改为funcs，是不是不在每个目录下新建funcs比较好
| nv_library(manipulation_cuda SRCS manipulation.cu DEPS dense_tensor kernel_context kernel_factory utils_cuda unary) | ||
| elseif(WITH_ROCM) | ||
| nv_library(nn_cuda SRCS nn.cu DEPS dense_tensor kernel_context kernel_factory eigen_function) | ||
| elseif(WITH_ROCM) |
| int64_t post_; | ||
| }; | ||
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| // #if defined(__NVCC__) || defined(__HIPCC__) |
| namespace general { | ||
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| using DDim = paddle::framework::DDim; | ||
| using CPUContext = paddle::platform::CPUDeviceContext; |
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这里是cpu和gpu的公共方法，所以放在里general下边
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| #pragma once | ||
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| #include "paddle/pten/kernels/cuda/funcs/elementwise/elementwise_broadcast.cu.h" |
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同上，要不在functions下面新增cpu和cuda目录吧，不在kernel层的设备目录里新增子目录了，后续这里也还要调整，另外如果都在cuda目录下，是不是文件后缀中的cu也可以去掉了
zyfncg reviewed Nov 10, 2021
paddle/pten/api/lib/nn.cc Outdated
| namespace paddle { | ||
| namespace experimental { | ||
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| Tensor elementwise_add(const Tensor& x, const Tensor& y, int axis) { |
chenwhql approved these changes Nov 11, 2021
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| int pre, n, post, is_run_common_broadcast; | ||
| get_mid_dims(x_dim, y_dim, axis, &pre, &n, &post, &is_run_common_broadcast); | ||
| pten::general::get_mid_dims(x_dim, y_dim, axis, &pre, &n, &post, |
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函数命名建议按照code style统一，采用驼峰式命名，这里原先就不太规范，可在后续PR更改
Avin0323 approved these changes Nov 11, 2021
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LGTM for PR-CI-OP-benchmark
raindrops2sea approved these changes Nov 11, 2021
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Describe
相关背景
需要迁移elementwise系列kernel到新的Tensor计算库下，其中elementwise_add是迁移的第一个该系列kernel。该PR主要迁移了elementwise_add计算逻辑以及大部分elementwise系列kernel依赖的基本组件，涉及到了较多的文件，构成了后续其他elementwise迁移的基础。
迁移主要逻辑
1，elementwise基础组件迁移
2，elementwise_add kernel迁移