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87a08563
编写于
5月 11, 2018
作者:
T
tangwei12
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电子邮件补丁
差异文件
add checkpoint save op
上级
2a05b3d5
变更
1
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1 changed file
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158 addition
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-0
paddle/fluid/operators/cpkt_save_op.cc
paddle/fluid/operators/cpkt_save_op.cc
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paddle/fluid/operators/cpkt_save_op.cc
0 → 100644
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87a08563
/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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 <stdint.h>
#include <sys/stat.h>
#include <fstream>
#include <numeric>
#include <sstream>
#include "paddle/fluid/framework/data_type.h"
#include "paddle/fluid/framework/data_type_transform.h"
#include "paddle/fluid/framework/framework.pb.h"
#include "paddle/fluid/framework/lod_tensor.h"
#include "paddle/fluid/framework/op_registry.h"
#include "paddle/fluid/platform/device_context.h"
namespace
paddle
{
namespace
operators
{
// TODO(sidgoyal78): These function are needed by other files (save_op), move
// them to paddle::filesystem namespace. (as noted by yuyang18 in save_op).
constexpr
char
kSEP
=
'/'
;
static
bool
FileExists
(
const
std
::
string
&
filepath
)
{
struct
stat
buffer
;
return
(
stat
(
filepath
.
c_str
(),
&
buffer
)
==
0
);
}
static
std
::
string
DirName
(
const
std
::
string
&
filepath
)
{
auto
pos
=
filepath
.
rfind
(
kSEP
);
if
(
pos
==
std
::
string
::
npos
)
{
return
""
;
}
return
filepath
.
substr
(
0
,
pos
);
}
static
void
MkDir
(
const
char
*
path
)
{
if
(
mkdir
(
path
,
0755
))
{
PADDLE_ENFORCE_EQ
(
errno
,
EEXIST
,
"%s mkdir failed!"
,
path
);
}
}
static
void
MkDirRecursively
(
const
char
*
fullpath
)
{
if
(
*
fullpath
==
'\0'
)
return
;
// empty string
if
(
FileExists
(
fullpath
))
return
;
MkDirRecursively
(
DirName
(
fullpath
).
c_str
());
MkDir
(
fullpath
);
}
class
CkptSaveOp
:
public
framework
::
OperatorBase
{
public:
CkptSaveOp
(
const
std
::
string
&
type
,
const
framework
::
VariableNameMap
&
inputs
,
const
framework
::
VariableNameMap
&
outputs
,
const
framework
::
AttributeMap
&
attrs
)
:
OperatorBase
(
type
,
inputs
,
outputs
,
attrs
)
{}
private:
void
RunImpl
(
const
framework
::
Scope
&
scope
,
const
platform
::
Place
&
place
)
const
override
{
auto
filename
=
Attr
<
std
::
string
>
(
"file_path"
);
auto
overwrite
=
Attr
<
bool
>
(
"overwrite"
);
bool
is_present
=
FileExists
(
filename
);
if
(
is_present
&&
!
overwrite
)
{
PADDLE_THROW
(
"%s exists!, cannot save_combine to it when overwrite=false"
,
filename
,
overwrite
);
}
MkDirRecursively
(
DirName
(
filename
).
c_str
());
std
::
ofstream
fout
(
filename
);
PADDLE_ENFORCE
(
static_cast
<
bool
>
(
fout
),
"Cannot open %s to write"
,
filename
);
auto
inp_var_names
=
Inputs
(
"X"
);
PADDLE_ENFORCE_GT
(
static_cast
<
int
>
(
inp_var_names
.
size
()),
0
,
"The number of input variables should be greater than 0"
);
// get device context from pool
platform
::
DeviceContextPool
&
pool
=
platform
::
DeviceContextPool
::
Instance
();
auto
&
dev_ctx
=
*
pool
.
Get
(
place
);
for
(
size_t
i
=
0
;
i
<
inp_var_names
.
size
();
i
++
)
{
auto
*
var
=
scope
.
FindVar
(
inp_var_names
[
i
]);
PADDLE_ENFORCE
(
var
!=
nullptr
,
"Cannot find variable %s for save_combine_op"
,
inp_var_names
[
i
]);
PADDLE_ENFORCE
(
var
->
IsType
<
framework
::
LoDTensor
>
(),
"SaveCombineOp only supports LoDTensor, %s has wrong type"
,
inp_var_names
[
i
]);
auto
&
tensor
=
var
->
Get
<
framework
::
LoDTensor
>
();
// Serialize tensors one by one
// Check types to see if a fp16 transformation is required
auto
in_dtype
=
framework
::
ToDataType
(
tensor
.
type
());
auto
out_dtype
=
in_dtype
;
if
(
in_dtype
!=
out_dtype
)
{
auto
in_kernel_type
=
framework
::
OpKernelType
(
in_dtype
,
place
);
auto
out_kernel_type
=
framework
::
OpKernelType
(
out_dtype
,
place
);
framework
::
LoDTensor
out
;
// copy LoD info to the new tensor
out
.
set_lod
(
tensor
.
lod
());
framework
::
TransDataType
(
in_kernel_type
,
out_kernel_type
,
tensor
,
&
out
);
framework
::
SerializeToStream
(
fout
,
out
,
dev_ctx
);
}
else
{
framework
::
SerializeToStream
(
fout
,
tensor
,
dev_ctx
);
}
}
fout
.
close
();
}
};
class
CkptSaveOpProtoMaker
:
public
framework
::
OpProtoAndCheckerMaker
{
public:
CkptSaveOpProtoMaker
(
OpProto
*
proto
,
OpAttrChecker
*
op_checker
)
:
OpProtoAndCheckerMaker
(
proto
,
op_checker
)
{
AddInput
(
"X"
,
"(vector) Input LoDTensors that need to be saved together in a file."
)
.
AsDuplicable
();
AddComment
(
R"DOC(
SaveCombine operator
This operator will serialize and write a list of input LoDTensor variables
to a file on disk.
)DOC"
);
AddAttr
<
bool
>
(
"overwrite"
,
"(boolean, default true)"
"Overwrite the output file if it exists."
)
.
SetDefault
(
true
);
AddAttr
<
std
::
string
>
(
"file_path"
,
"(string)"
"The
\"
file_path
\"
where the LoDTensor variables will be saved."
)
.
AddCustomChecker
(
[](
const
std
::
string
&
path
)
{
return
!
path
.
empty
();
});
}
};
}
// namespace operators
}
// namespace paddle
namespace
ops
=
paddle
::
operators
;
REGISTER_OPERATOR
(
ckpt_save
,
ops
::
CkptSaveOp
,
ops
::
CkptSaveOpProtoMaker
);
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