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体验新版 GitCode,发现更多精彩内容 >>
提交
ecf23ce5
编写于
7月 26, 2017
作者:
Y
Yu Yang
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Update Backward
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b1b43645
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4
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4 changed file
with
128 addition
and
0 deletion
+128
-0
paddle/framework/CMakeLists.txt
paddle/framework/CMakeLists.txt
+2
-0
paddle/framework/backward.cc
paddle/framework/backward.cc
+93
-0
paddle/framework/backward.h
paddle/framework/backward.h
+31
-0
paddle/framework/op_registry.h
paddle/framework/op_registry.h
+2
-0
未找到文件。
paddle/framework/CMakeLists.txt
浏览文件 @
ecf23ce5
...
...
@@ -31,3 +31,5 @@ add_dependencies(framework_py_proto framework_py_proto_init)
cc_library
(
net SRCS net.cc DEPS op_registry
)
cc_test
(
net_op_test SRCS net_op_test.cc DEPS net add_op mul_op sigmoid_op softmax_op fc_op
)
cc_library
(
backward SRCS backward.cc DEPS net
)
paddle/framework/backward.cc
0 → 100644
浏览文件 @
ecf23ce5
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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 <paddle/framework/backward.h>
#include <paddle/framework/net.h>
namespace
paddle
{
namespace
framework
{
static
bool
AllInSet
(
const
std
::
vector
<
std
::
string
>&
names
,
const
std
::
string
&
suffix
,
const
std
::
unordered_set
<
std
::
string
>&
set
)
{
for
(
auto
&
name
:
names
)
{
if
(
set
.
find
(
name
+
suffix
)
==
set
.
end
())
{
return
false
;
}
}
return
true
;
}
static
std
::
vector
<
int
>
InSetIdx
(
const
std
::
vector
<
std
::
string
>&
names
,
const
std
::
string
&
suffix
,
const
std
::
unordered_set
<
std
::
string
>&
set
)
{
std
::
vector
<
int
>
ret_val
;
ret_val
.
reserve
(
names
.
size
());
for
(
size_t
i
=
0
;
i
<
names
.
size
();
++
i
)
{
if
(
set
.
find
(
names
[
i
]
+
suffix
)
!=
set
.
end
())
{
ret_val
.
push_back
(
i
);
}
}
return
ret_val
;
}
static
std
::
shared_ptr
<
OperatorBase
>
EmptyOp
()
{
auto
net_op
=
std
::
make_shared
<
NetOp
>
();
net_op
->
CompleteAddOp
();
return
net_op
;
}
static
std
::
shared_ptr
<
OperatorBase
>
BackwardImpl
(
const
OperatorBase
&
forwardOp
,
std
::
unordered_set
<
std
::
string
>&
no_grad_names
,
int
&
uniq_id
)
{
if
(
AllInSet
(
forwardOp
.
inputs_
,
OperatorBase
::
GRAD_VAR_SUFFIX
(),
no_grad_names
))
{
return
EmptyOp
();
}
if
(
AllInSet
(
forwardOp
.
outputs_
,
OperatorBase
::
GRAD_VAR_SUFFIX
(),
no_grad_names
))
{
for
(
auto
&
name
:
forwardOp
.
inputs_
)
{
// Mark all input is not need
no_grad_names
.
insert
(
name
+
OperatorBase
::
GRAD_VAR_SUFFIX
());
}
return
EmptyOp
();
}
auto
*
net
=
new
NetOp
();
if
(
forwardOp
.
IsNetOp
())
{
//! TODO(dzh)
}
else
{
//! TODO(fjy)
}
net
->
CompleteAddOp
();
return
std
::
shared_ptr
<
OperatorBase
>
(
net
);
}
extern
std
::
shared_ptr
<
OperatorBase
>
Backward
(
const
std
::
shared_ptr
<
OperatorBase
>&
forwardOp
,
const
std
::
unordered_set
<
std
::
string
>&
no_grad_vars
)
{
std
::
unordered_set
<
std
::
string
>
no_grad_names
;
no_grad_names
.
reserve
(
no_grad_vars
.
size
());
for
(
auto
&
name
:
no_grad_vars
)
{
no_grad_names
.
insert
(
name
+
OperatorBase
::
GRAD_VAR_SUFFIX
());
}
int
uid
=
0
;
return
BackwardImpl
(
*
forwardOp
,
no_grad_names
,
uid
);
}
}
// namespace framework
}
// namespace paddle
paddle/framework/backward.h
0 → 100644
浏览文件 @
ecf23ce5
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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 <unordered_set>
#include "operator.h"
namespace
paddle
{
namespace
framework
{
/**
* @brief
* @param forwardOp
* @param no_grad_vars ignored input name of forward
* @return
*/
extern
std
::
shared_ptr
<
OperatorBase
>
Backward
(
const
std
::
shared_ptr
<
OperatorBase
>&
forwardOp
,
const
std
::
unordered_set
<
std
::
string
>&
no_grad_vars
);
}
// namespace framework
}
// namespace paddle
paddle/framework/op_registry.h
浏览文件 @
ecf23ce5
...
...
@@ -302,6 +302,8 @@ class OpRegistry {
static
std
::
shared_ptr
<
OperatorBase
>
CreateGradOp
(
std
::
shared_ptr
<
OperatorBase
>
op
)
{
PADDLE_ENFORCE
(
!
op
->
IsNetOp
(),
"Use framework::Backward to get backward ops"
);
GradOpBuilder
builder
(
op
.
get
());
std
::
shared_ptr
<
OperatorBase
>
grad_op
(
builder
.
Build
());
grad_op
->
Init
();
...
...
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