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体验新版 GitCode,发现更多精彩内容 >>
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3064ae33
编写于
8月 03, 2017
作者:
G
gangliao
提交者:
GitHub
8月 03, 2017
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差异文件
Merge pull request #3180 from reyoung/feature/MeanOpGrad
Add Gradient Operator for mean
上级
017182c6
18d92417
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
30 addition
and
1 deletion
+30
-1
paddle/operators/mean_op.cc
paddle/operators/mean_op.cc
+11
-1
paddle/operators/mean_op.cu
paddle/operators/mean_op.cu
+1
-0
paddle/operators/mean_op.h
paddle/operators/mean_op.h
+17
-0
paddle/operators/type_alias.h
paddle/operators/type_alias.h
+1
-0
未找到文件。
paddle/operators/mean_op.cc
浏览文件 @
3064ae33
...
...
@@ -33,13 +33,23 @@ public:
MeanOpMaker
(
OpProto
*
proto
,
OpAttrChecker
*
op_checker
)
:
OpProtoAndCheckerMaker
(
proto
,
op_checker
)
{
AddInput
(
"X"
,
"The input of mean op"
);
AddOutput
(
"Out"
,
"The output of mean op"
);
AddOutput
(
"Out"
,
"The output of mean op"
)
.
IgnoreGradient
()
;
AddComment
(
"Mean Operator"
);
}
};
class
MeanGradOp
:
public
OperatorWithKernel
{
protected:
void
InferShape
(
const
InferShapeContext
&
ctx
)
const
override
{
ctx
.
Output
<
Tensor
>
(
"X"
+
GRAD_VAR_SUFFIX
())
->
Resize
(
ctx
.
Input
<
Tensor
>
(
"X"
)
->
dims
());
}
};
}
// namespace operators
}
// namespace paddle
REGISTER_OP
(
mean
,
ops
::
MeanOp
,
ops
::
MeanOpMaker
);
REGISTER_OP_CPU_KERNEL
(
mean
,
ops
::
MeanKernel
<
ops
::
CPUPlace
,
float
>
);
REGISTER_GRADIENT_OP
(
mean
,
mean_grad
,
ops
::
MeanGradOp
);
REGISTER_OP_CPU_KERNEL
(
mean_grad
,
ops
::
MeanGradKernel
<
ops
::
CPUPlace
,
float
>
);
paddle/operators/mean_op.cu
浏览文件 @
3064ae33
...
...
@@ -3,3 +3,4 @@
#include "paddle/operators/mean_op.h"
REGISTER_OP_GPU_KERNEL
(
mean
,
ops
::
MeanKernel
<
ops
::
GPUPlace
,
float
>
);
REGISTER_OP_GPU_KERNEL
(
mean_grad
,
ops
::
MeanGradKernel
<
ops
::
GPUPlace
,
float
>
);
\ No newline at end of file
paddle/operators/mean_op.h
浏览文件 @
3064ae33
...
...
@@ -35,5 +35,22 @@ public:
}
};
template
<
typename
Place
,
typename
T
>
class
MeanGradKernel
:
public
OpKernel
{
public:
void
Compute
(
const
ExecutionContext
&
context
)
const
override
{
auto
OG
=
context
.
Input
<
Tensor
>
(
"Out"
+
OperatorBase
::
GRAD_VAR_SUFFIX
());
PADDLE_ENFORCE
(
framework
::
product
(
OG
->
dims
())
==
1
,
"Mean Gradient should be scalar"
);
auto
IG
=
context
.
Output
<
Tensor
>
(
"X"
+
OperatorBase
::
GRAD_VAR_SUFFIX
());
IG
->
mutable_data
<
T
>
(
context
.
GetPlace
());
T
ig_size
=
(
T
)
framework
::
product
(
IG
->
dims
());
EigenVector
<
T
>::
Flatten
(
*
IG
).
device
(
*
(
context
.
GetEigenDevice
<
Place
>
()))
=
EigenScalar
<
T
>::
From
(
*
OG
)
/
ig_size
;
}
};
}
// namespace operators
}
// namespace paddle
paddle/operators/type_alias.h
浏览文件 @
3064ae33
...
...
@@ -51,6 +51,7 @@ using CPUPlace = platform::CPUPlace;
using
GPUPlace
=
platform
::
GPUPlace
;
using
NetOp
=
framework
::
NetOp
;
using
OpRegistry
=
framework
::
OpRegistry
;
using
OperatorBase
=
framework
::
OperatorBase
;
}
// namespace operators
}
// namespace paddle
...
...
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