Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
wzpei9
Paddle
提交
590e6111
P
Paddle
项目概览
wzpei9
/
Paddle
与 Fork 源项目一致
Fork自
PaddlePaddle / Paddle
通知
1
Star
1
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
1
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
P
Paddle
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
1
Issue
1
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
体验新版 GitCode,发现更多精彩内容 >>
提交
590e6111
编写于
12月 19, 2017
作者:
F
fengjiayi
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
update
上级
6bb4a6fd
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
22 addition
and
5 deletion
+22
-5
paddle/pybind/protobuf.cc
paddle/pybind/protobuf.cc
+1
-0
python/paddle/v2/fluid/backward.py
python/paddle/v2/fluid/backward.py
+21
-5
未找到文件。
paddle/pybind/protobuf.cc
浏览文件 @
590e6111
...
...
@@ -157,6 +157,7 @@ void BindBlockDesc(py::module &m) {
.
def_property_readonly
(
"parent"
,
&
BlockDescBind
::
Parent
)
.
def
(
"append_op"
,
&
BlockDescBind
::
AppendOp
,
py
::
return_value_policy
::
reference
)
.
def
(
"append_allocated_op"
,
&
BlockDescBind
::
AppendAllocatedOp
)
.
def
(
"prepend_op"
,
&
BlockDescBind
::
PrependOp
,
py
::
return_value_policy
::
reference
)
.
def
(
"var"
,
...
...
python/paddle/v2/fluid/backward.py
浏览文件 @
590e6111
...
...
@@ -15,7 +15,11 @@ def rename_arg(op_desc_list, old_name, new_name, begin_idx=None, end_idx=None):
op_desc_list
[
i
].
rename_output
(
old_name
,
new_name
)
def
backward_impl
(
block
,
target_block
,
no_grad_set
,
callback
=
None
):
def
backward_impl
(
block
,
target_block
,
no_grad_set
,
grad_info_map
,
callback
=
None
):
grad_op_descs
=
[]
grad_to_var
=
{}
program
=
block
.
program
...
...
@@ -25,7 +29,8 @@ def backward_impl(block, target_block, no_grad_set, callback=None):
sub_block_idx
=
each_op
.
block_attr
(
"sub_block"
)
sub_block
=
program
.
block
(
sub_block_idx
)
grad_sub_block
=
program
.
create_block
(
parent_idx
=
sub_block_idx
)
backward_impl
(
sub_block
,
grad_sub_block
,
no_grad_set
,
callback
)
backward_impl
(
sub_block
,
grad_sub_block
,
no_grad_set
,
grad_info_map
,
callback
)
grad_sub_block_list
.
append
(
grad_sub_block
)
grad_op_desc
=
core
.
get_grad_op_desc
(
each_op
.
desc
,
no_grad_set
[
block
.
idx
],
...
...
@@ -71,17 +76,28 @@ def backward_impl(block, target_block, no_grad_set, callback=None):
pending_sum_ops
.
append
((
core
.
OpDesc
(
type
=
"sum_op"
,
inputs
=
inputs
,
outputs
=
var_name
,
attrs
=
{}),
len
(
grad_op_descs
)))
# TODO: remove op in no grad set
# 根据append的顺序可以看出pending_sum_ops一定是根据sum_op的插入位置排序的
for
p
in
reversed
(
pending_sum_ops
):
grad_op_descs
.
insert
(
p
[
1
],
p
[
0
])
# create new gradient variables in the target block
# create new gradient variables in the target block
desc
for
op_desc
in
grad_op_descs
:
for
grad_var_name
in
op_desc
.
output_arg_names
():
if
target_block
.
has_var
(
if
target_block
.
desc
.
has_var
(
grad_var_name
)
or
grad_var_name
==
core
.
get_empty_var_name
(
):
continue
target_block
.
var
(
grad_var_name
)
target_block
.
desc
.
var
(
grad_var_name
)
if
not
grad_to_var
.
has_key
(
grad_var_name
):
continue
grad_info_map
[
grad_to_var
[
grad_var_name
]]
=
(
grad_var_name
,
target_block
)
# insert backward operators to target_block
for
op_desc
in
grad_op_descs
:
target_block
.
desc
.
append_allocated_op
(
op_desc
)
target_block
.
sync_with_cpp
()
def
append_backward_ops
(
loss
,
parameter_list
=
None
,
no_grad_set
=
None
):
...
...
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录