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bb29800a
编写于
6月 26, 2018
作者:
C
chengduo
提交者:
GitHub
6月 26, 2018
浏览文件
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电子邮件补丁
差异文件
small refine (#11460)
上级
ab0c2e1d
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
44 addition
and
41 deletion
+44
-41
paddle/fluid/framework/details/multi_devices_graph_builder.cc
...le/fluid/framework/details/multi_devices_graph_builder.cc
+44
-41
未找到文件。
paddle/fluid/framework/details/multi_devices_graph_builder.cc
浏览文件 @
bb29800a
...
...
@@ -207,53 +207,56 @@ std::unique_ptr<SSAGraph> MultiDevSSAGraphBuilder::Build(
is_forwarding
=
false
;
}
else
{
int
op_dev_id
=
GetOpDeviceID
(
*
op
);
if
(
op_dev_id
==
-
1
)
{
// var on all device
CreateComputationalOps
(
&
result
,
*
op
,
places_
.
size
());
}
else
{
if
(
op_dev_id
!=
-
1
)
{
// This op only runs on one specific device.
CreateComputationalOp
(
&
result
,
*
op
,
op_dev_id
);
for
(
auto
&
var_name
:
op
->
OutputArgumentNames
())
{
var_name_on_devices_
.
emplace
(
var_name
,
op_dev_id
);
}
}
if
(
!
is_forwarding
&&
places_
.
size
()
>
1
)
{
// Currently, we assume that once gradient is generated, it can be
// broadcast, and each gradient is only broadcast once.
if
(
static_cast
<
bool
>
(
boost
::
get
<
int
>
(
op
->
GetAttr
(
OpProtoAndCheckerMaker
::
OpRoleAttrName
()))
&
static_cast
<
int
>
(
OpRole
::
kBackward
)))
{
try
{
auto
backward_vars
=
boost
::
get
<
std
::
vector
<
std
::
string
>>
(
op
->
GetNullableAttr
(
OpProtoAndCheckerMaker
::
OpRoleVarAttrName
()));
PADDLE_ENFORCE_EQ
(
backward_vars
.
size
()
%
2
,
0
);
for
(
size_t
i
=
0
;
i
<
backward_vars
.
size
();
i
+=
2
)
{
auto
&
p_name
=
backward_vars
[
i
];
auto
&
g_name
=
backward_vars
[
i
+
1
];
VLOG
(
10
)
<<
"Bcast "
<<
g_name
<<
" for parameter "
<<
p_name
;
switch
(
strategy_
.
reduce_
)
{
case
BuildStrategy
::
ReduceStrategy
::
kReduce
:
cur_device_id
=
GetAppropriateDeviceID
({
g_name
});
CreateReduceOp
(
&
result
,
g_name
,
cur_device_id
);
var_name_on_devices_
.
emplace
(
g_name
,
cur_device_id
);
bcast_var_name_set
[
cur_device_id
].
emplace
(
p_name
);
break
;
case
BuildStrategy
::
ReduceStrategy
::
kAllReduce
:
if
(
IsSparseGradient
(
g_name
))
{
CreateReduceOp
(
&
result
,
g_name
,
0
);
CreateBroadcastOp
(
&
result
,
g_name
,
0
);
}
else
{
InsertAllReduceOp
(
&
result
,
g_name
);
}
break
;
default:
LOG
(
FATAL
)
<<
"Unknown reduce strategy "
;
break
;
}
else
{
// This op runs on all devices, and its output may have parameter's
// gradients.
CreateComputationalOps
(
&
result
,
*
op
,
places_
.
size
());
if
(
!
is_forwarding
&&
places_
.
size
()
>
1
)
{
// Currently, we assume that once gradient is generated, it can be
// broadcast, and each gradient is only broadcast once.
if
(
static_cast
<
bool
>
(
boost
::
get
<
int
>
(
op
->
GetAttr
(
OpProtoAndCheckerMaker
::
OpRoleAttrName
()))
&
static_cast
<
int
>
(
OpRole
::
kBackward
)))
{
try
{
auto
backward_vars
=
boost
::
get
<
std
::
vector
<
std
::
string
>>
(
op
->
GetNullableAttr
(
OpProtoAndCheckerMaker
::
OpRoleVarAttrName
()));
PADDLE_ENFORCE_EQ
(
backward_vars
.
size
()
%
2
,
0
);
for
(
size_t
i
=
0
;
i
<
backward_vars
.
size
();
i
+=
2
)
{
auto
&
p_name
=
backward_vars
[
i
];
auto
&
g_name
=
backward_vars
[
i
+
1
];
VLOG
(
10
)
<<
"Bcast "
<<
g_name
<<
" for parameter "
<<
p_name
;
switch
(
strategy_
.
reduce_
)
{
case
BuildStrategy
::
ReduceStrategy
::
kReduce
:
cur_device_id
=
GetAppropriateDeviceID
({
g_name
});
CreateReduceOp
(
&
result
,
g_name
,
cur_device_id
);
var_name_on_devices_
.
emplace
(
g_name
,
cur_device_id
);
bcast_var_name_set
[
cur_device_id
].
emplace
(
p_name
);
break
;
case
BuildStrategy
::
ReduceStrategy
::
kAllReduce
:
if
(
IsSparseGradient
(
g_name
))
{
CreateReduceOp
(
&
result
,
g_name
,
0
);
CreateBroadcastOp
(
&
result
,
g_name
,
0
);
}
else
{
InsertAllReduceOp
(
&
result
,
g_name
);
}
break
;
default:
LOG
(
FATAL
)
<<
"Unknown reduce strategy "
;
break
;
}
}
}
catch
(
boost
::
bad_get
e
)
{
}
}
catch
(
boost
::
bad_get
e
)
{
}
}
}
...
...
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