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【NPU】Support npu kernel for mul op (#31584)
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* add mul

* add test mul
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@frankwhzhang
frankwhzhang authored Mar 16, 2021
1 parent 1e95600 commit 925432d
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243 changes: 243 additions & 0 deletions paddle/fluid/operators/mul_op_npu.cc
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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. */

#include <memory>
#include <string>

#include "paddle/fluid/operators/mul_op.h"
#include "paddle/fluid/operators/npu_op_runner.h"

namespace paddle {
namespace operators {

template <typename DeviceContext, typename T>
class MulNPUKernel : public framework::OpKernel<T> {
public:
void Compute(const framework::ExecutionContext& ctx) const override {
auto* x = ctx.Input<framework::Tensor>("X");
auto* y = ctx.Input<framework::Tensor>("Y");
auto* out = ctx.Output<framework::Tensor>("Out");
int x_num_col_dims = ctx.Attr<int>("x_num_col_dims");
int y_num_col_dims = ctx.Attr<int>("y_num_col_dims");
auto stream =
ctx.template device_context<paddle::platform::NPUDeviceContext>()
.stream();
if (x_num_col_dims == 1 && y_num_col_dims == 1) {
if (x->dims().size() == 2 && y->dims().size() == 2) {
out->mutable_data<T>(ctx.GetPlace());
auto runner =
NpuOpRunner("MatMul", {*x, *y}, {*out},
{{"transpose_x1", false}, {"transpose_x2", false}});

runner.Run(stream);
} else if (x->dims().size() == 3 && y->dims().size() == 2) {
// reshape
Tensor tmp_x(x->type());
int64_t sec_dim = x->dims()[1] * x->dims()[2];
int64_t first_dim = x->dims()[0];
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
tmp_x.mutable_data<T>(ctx.GetPlace());
framework::TensorCopy(
*x, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), &tmp_x);
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
out->mutable_data<T>(ctx.GetPlace());
// matmul
auto runner =
NpuOpRunner("MatMul", {tmp_x, *y}, {*out},
{{"transpose_x1", false}, {"transpose_x2", false}});
runner.Run(stream);
} else {
PADDLE_THROW(platform::errors::InvalidArgument("not suppert dims"));
}
// to do other
} else if (x->dims().size() == 3 && y->dims().size() == 2) {
// for example: x.shape=[2, 3, 4] y.shape=[4, 5], expect [2, 3, 5]
PADDLE_ENFORCE_EQ(x_num_col_dims, 2,
platform::errors::InvalidArgument(
"now only support x_num_col_dims == 2: but got %d",
x_num_col_dims));
// flatten => x.shape=[6, 4]
Tensor tmp_x(x->type());
int64_t first_dim = x->dims()[0] * x->dims()[1];
int64_t sec_dim = x->dims()[2];
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
tmp_x.mutable_data<T>(ctx.GetPlace());
framework::TensorCopy(
*x, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), &tmp_x);
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));

// matmul [6,4] , [4, 5] => [6, 5]
Tensor tmp_matmul(x->type());
tmp_matmul.Resize(framework::make_ddim({first_dim, y->dims()[1]}));
tmp_matmul.mutable_data<T>(ctx.GetPlace());

auto runner_matmul =
NpuOpRunner("MatMul", {tmp_x, *y}, {tmp_matmul},
{{"transpose_x1", false}, {"transpose_x2", false}});

runner_matmul.Run(stream);
// reshape [6, 5] => [2, 3, 5]
(*out).Resize(
framework::make_ddim({x->dims()[0], x->dims()[1], y->dims()[1]}));
out->mutable_data(ctx.GetPlace(), x->type());
framework::TensorCopy(
tmp_matmul, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), out);
(*out).Resize(
framework::make_ddim({x->dims()[0], x->dims()[1], y->dims()[1]}));
}
}
};

template <typename DeviceContext, typename T>
class MulGradNPUKernel : public framework::OpKernel<T> {
public:
void Compute(const framework::ExecutionContext& ctx) const override {
auto* x = ctx.Input<framework::Tensor>("X");
auto* y = ctx.Input<framework::Tensor>("Y");
auto* dout = ctx.Input<framework::Tensor>(framework::GradVarName("Out"));
auto* dx = ctx.Output<framework::Tensor>(framework::GradVarName("X"));
auto* dy = ctx.Output<framework::Tensor>(framework::GradVarName("Y"));
int x_num_col_dims = ctx.Attr<int>("x_num_col_dims");
int y_num_col_dims = ctx.Attr<int>("y_num_col_dims");
auto stream =
ctx.template device_context<paddle::platform::NPUDeviceContext>()
.stream();
if (x_num_col_dims == 1 && y_num_col_dims == 1) {
if (x->dims().size() == 2 && y->dims().size() == 2) {
if (dx) {
dx->mutable_data<T>(ctx.GetPlace());
auto runner_dx =
NpuOpRunner("MatMul", {*dout, *y}, {*dx},
{{"transpose_x1", false}, {"transpose_x2", true}});

runner_dx.Run(stream);
}

if (dy) {
dy->mutable_data<T>(ctx.GetPlace());
auto runner_dy =
NpuOpRunner("MatMul", {*x, *dout}, {*dy},
{{"transpose_x1", true}, {"transpose_x2", false}});

runner_dy.Run(stream);
}
} else if (x->dims().size() == 3 && y->dims().size() == 2) {
// flatten => x.shape=[6, 4]
// matmul
if (dx) {
// matmul [2, 5] * [12, 5] => [2, 12]
Tensor tmp_matmul(y->type());
tmp_matmul.Resize(
framework::make_ddim({dout->dims()[0], y->dims()[0]}));
tmp_matmul.mutable_data<T>(ctx.GetPlace());
auto runner_matmul =
NpuOpRunner("MatMul", {*dout, *y}, {tmp_matmul},
{{"transpose_x1", false}, {"transpose_x2", true}});
runner_matmul.Run(stream);
// reshape [2, 12] => [2, 3, 4]
dx->mutable_data(ctx.GetPlace(), x->type());
framework::TensorCopy(
tmp_matmul, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), dx);
}

if (dy) {
// flatten
Tensor tmp_x(x->type());
int64_t sec_dim = x->dims()[1] * x->dims()[2];
int64_t first_dim = x->dims()[0];
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
tmp_x.mutable_data<T>(ctx.GetPlace());
framework::TensorCopy(
*x, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), &tmp_x);
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
dy->mutable_data<T>(ctx.GetPlace());
auto runner_dy =
NpuOpRunner("MatMul", {tmp_x, *dout}, {*dy},
{{"transpose_x1", true}, {"transpose_x2", false}});

runner_dy.Run(stream);
}
}
} else if (x->dims().size() == 3 && y->dims().size() == 2) {
// for example: x.shape=[2, 3, 4] y.shape=[4, 5], expect [2, 3, 5]
PADDLE_ENFORCE_EQ(x_num_col_dims, 2,
platform::errors::InvalidArgument(
"now only support x_num_col_dims == 2: but got %d",
x_num_col_dims));
// tmp_dout both used by dx and dy
Tensor tmp_dout(x->type());
int64_t dout_first_dim = dout->dims()[0] * dout->dims()[1];
int64_t dout_sec_dim = dout->dims()[2];
tmp_dout.Resize(framework::make_ddim({dout_first_dim, dout_sec_dim}));
tmp_dout.mutable_data<T>(ctx.GetPlace());
framework::TensorCopy(
*dout, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), &tmp_dout);
tmp_dout.Resize(framework::make_ddim({dout_first_dim, dout_sec_dim}));

if (dx) {
// tmp_dout * y [6,5] * [4,5] => [6, 4]
Tensor tmp_matmul(y->type());
tmp_matmul.Resize(framework::make_ddim({dout_first_dim, y->dims()[0]}));
tmp_matmul.mutable_data<T>(ctx.GetPlace());
auto runner_matmul =
NpuOpRunner("MatMul", {tmp_dout, *y}, {tmp_matmul},
{{"transpose_x1", false}, {"transpose_x2", true}});
runner_matmul.Run(stream);
// reshape [6,4] => [2, 3, 4]
dx->mutable_data(ctx.GetPlace(), x->type());
framework::TensorCopy(
tmp_matmul, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), dx);
}
if (dy) {
// flatten x.shape [2,3,4] => [6, 4]
Tensor tmp_x(x->type());
int64_t first_dim = x->dims()[0] * x->dims()[1];
int64_t sec_dim = x->dims()[2];
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
tmp_x.mutable_data<T>(ctx.GetPlace());
framework::TensorCopy(
*x, ctx.GetPlace(),
ctx.template device_context<platform::DeviceContext>(), &tmp_x);
tmp_x.Resize(framework::make_ddim({first_dim, sec_dim}));
// mamtul [6,4] [6,5] =>[4,5]
dy->mutable_data<T>(ctx.GetPlace());
auto runner_dy =
NpuOpRunner("MatMul", {tmp_x, tmp_dout}, {*dy},
{{"transpose_x1", true}, {"transpose_x2", false}});
runner_dy.Run(stream);
}
}
}
};

} // namespace operators
} // namespace paddle

namespace ops = paddle::operators;

REGISTER_OP_NPU_KERNEL(
mul, ops::MulNPUKernel<paddle::platform::NPUDeviceContext, float>,
ops::MulNPUKernel<paddle::platform::NPUDeviceContext,
paddle::platform::float16>);
REGISTER_OP_NPU_KERNEL(
mul_grad, ops::MulGradNPUKernel<paddle::platform::NPUDeviceContext, float>,
ops::MulGradNPUKernel<paddle::platform::NPUDeviceContext,
paddle::platform::float16>);
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