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6c0129af
编写于
9月 19, 2017
作者:
H
hedaoyuan
浏览文件
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浏览文件
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电子邮件补丁
差异文件
Refine the GemmConvGrad2DKernel.
上级
f3669ca3
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
32 addition
and
37 deletion
+32
-37
paddle/operators/gemm_conv2d_op.h
paddle/operators/gemm_conv2d_op.h
+32
-37
未找到文件。
paddle/operators/gemm_conv2d_op.h
浏览文件 @
6c0129af
...
...
@@ -109,18 +109,13 @@ class GemmConvGrad2DKernel : public framework::OpKernel {
context
.
Input
<
Tensor
>
(
framework
::
GradVarName
(
"Output"
));
Tensor
*
input_grad
=
context
.
Output
<
Tensor
>
(
framework
::
GradVarName
(
"Input"
));
Tensor
*
filter_grad
_
=
Tensor
*
filter_grad
=
context
.
Output
<
Tensor
>
(
framework
::
GradVarName
(
"Filter"
));
// The filter and filter_grad will be reshaped in the calculations,
// so here use an assignment operation,
// that avoids modifying the variable in the Scope.
Tensor
filter
=
*
context
.
Input
<
Tensor
>
(
"Filter"
);
Tensor
filter_grad
;
if
(
filter_grad_
)
{
filter_grad_
->
mutable_data
<
T
>
(
context
.
GetPlace
());
filter_grad
=
*
filter_grad_
;
}
std
::
vector
<
int
>
strides
=
context
.
Attr
<
std
::
vector
<
int
>>
(
"strides"
);
std
::
vector
<
int
>
paddings
=
context
.
Attr
<
std
::
vector
<
int
>>
(
"paddings"
);
...
...
@@ -165,20 +160,6 @@ class GemmConvGrad2DKernel : public framework::OpKernel {
filter
.
numel
()
/
filter
.
dims
()[
0
]};
filter
.
Resize
(
filter_matrix_shape
);
if
(
filter_grad_
)
{
filter_grad
.
Resize
(
filter_matrix_shape
);
auto
t1
=
framework
::
EigenVector
<
T
>::
Flatten
(
filter_grad
);
t1
.
device
(
context
.
GetEigenDevice
<
Place
>
())
=
t1
.
constant
(
static_cast
<
T
>
(
0
));
}
if
(
input_grad
)
{
input_grad
->
mutable_data
<
T
>
(
context
.
GetPlace
());
auto
t2
=
framework
::
EigenVector
<
T
>::
Flatten
(
*
input_grad
);
t2
.
device
(
context
.
GetEigenDevice
<
Place
>
())
=
t2
.
constant
(
static_cast
<
T
>
(
0
));
}
auto
*
device_context
=
const_cast
<
platform
::
DeviceContext
*>
(
context
.
device_context_
);
...
...
@@ -186,22 +167,21 @@ class GemmConvGrad2DKernel : public framework::OpKernel {
// convolution backward weight operator: im2col + gemm
int
in_step
=
input_channels
/
groups
;
int
out_step
=
output_channels
/
groups
;
Tensor
in_grad_batch
;
Tensor
in_batch
;
for
(
int
i
=
0
;
i
<
batch_size
;
i
++
)
{
Tensor
out_grad_batch
=
output_grad
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
output_matrix_shape
);
if
(
input_grad
)
{
in_grad_batch
=
input_grad
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
input_shape
);
}
if
(
filter_grad_
)
{
in_batch
=
input
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
input_shape
);
}
for
(
int
g
=
0
;
g
<
groups
;
g
++
)
{
Tensor
out_grad_slice
=
out_grad_batch
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
if
(
input_grad
)
{
if
(
input_grad
)
{
input_grad
->
mutable_data
<
T
>
(
context
.
GetPlace
());
auto
t
=
framework
::
EigenVector
<
T
>::
Flatten
(
*
input_grad
);
t
.
device
(
context
.
GetEigenDevice
<
Place
>
())
=
t
.
constant
(
static_cast
<
T
>
(
0
));
for
(
int
i
=
0
;
i
<
batch_size
;
i
++
)
{
Tensor
out_grad_batch
=
output_grad
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
output_matrix_shape
);
Tensor
in_grad_batch
=
input_grad
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
input_shape
);
for
(
int
g
=
0
;
g
<
groups
;
g
++
)
{
// gemm
Tensor
out_grad_slice
=
out_grad_batch
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
Tensor
filter_slice
=
filter
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
math
::
matmul
<
Place
,
T
>
(
filter_slice
,
true
,
out_grad_slice
,
false
,
...
...
@@ -213,16 +193,31 @@ class GemmConvGrad2DKernel : public framework::OpKernel {
col2im
(
in_grad_slice
,
col
,
strides
[
0
],
strides
[
1
],
paddings
[
0
],
paddings
[
1
],
device_context
);
}
}
}
if
(
filter_grad_
)
{
if
(
filter_grad
)
{
filter_grad
->
mutable_data
<
T
>
(
context
.
GetPlace
());
Tensor
filter_grad_
=
*
filter_grad
;
filter_grad_
.
Resize
(
filter_matrix_shape
);
auto
t
=
framework
::
EigenVector
<
T
>::
Flatten
(
filter_grad_
);
t
.
device
(
context
.
GetEigenDevice
<
Place
>
())
=
t
.
constant
(
static_cast
<
T
>
(
0
));
for
(
int
i
=
0
;
i
<
batch_size
;
i
++
)
{
Tensor
out_grad_batch
=
output_grad
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
output_matrix_shape
);
Tensor
in_batch
=
input
->
Slice
<
T
>
(
i
,
i
+
1
).
Resize
(
input_shape
);
for
(
int
g
=
0
;
g
<
groups
;
g
++
)
{
// im2col
Tensor
out_grad_slice
=
out_grad_batch
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
Tensor
in_slice
=
in_batch
.
Slice
<
T
>
(
g
*
in_step
,
(
g
+
1
)
*
in_step
);
im2col
(
in_slice
,
col
,
strides
[
0
],
strides
[
1
],
paddings
[
0
],
paddings
[
1
],
device_context
);
// gemm
Tensor
filter_grad_slice
=
filter_grad
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
filter_grad
_
.
Slice
<
T
>
(
g
*
out_step
,
(
g
+
1
)
*
out_step
);
math
::
matmul
<
Place
,
T
>
(
out_grad_slice
,
false
,
col_matrix
,
true
,
T
(
1.0
),
&
filter_grad_slice
,
T
(
1.0
),
device_context
);
...
...
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