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体验新版 GitCode,发现更多精彩内容 >>
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01975ec1
编写于
5月 21, 2018
作者:
T
tangwei12
浏览文件
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电子邮件补丁
差异文件
add checkpoint in io
上级
5451c78d
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
48 addition
and
17 deletion
+48
-17
python/paddle/fluid/io.py
python/paddle/fluid/io.py
+48
-17
未找到文件。
python/paddle/fluid/io.py
浏览文件 @
01975ec1
...
...
@@ -13,21 +13,17 @@
# limitations under the License.
import
os
import
time
import
shutil
from
paddle.fluid.evaluator
import
Evaluator
from
paddle.fluid.framework
import
Program
,
Parameter
,
default_main_program
,
Variable
from
.
import
core
__all__
=
[
'save_vars'
,
'save_params'
,
'save_persistables'
,
'load_vars'
,
'load_params'
,
'load_persistables'
,
'save_inference_model'
,
'load_inference_model'
,
'get_inference_program'
,
'save_vars'
,
'save_params'
,
'save_persistables'
,
'load_vars'
,
'load_params'
,
'load_persistables'
,
'save_inference_model'
,
'load_inference_model'
,
'get_inference_program'
,
'save_checkpoint'
,
'restore_checkpoint'
]
...
...
@@ -195,6 +191,8 @@ def load_vars(executor,
load_var_map
=
{}
for
each_var
in
vars
:
assert
isinstance
(
each_var
,
Variable
)
if
each_var
.
type
==
core
.
VarDesc
.
VarType
.
RAW
:
continue
new_var
=
_clone_var_in_block_
(
load_block
,
each_var
)
if
filename
is
None
:
load_block
.
append_op
(
...
...
@@ -457,11 +455,12 @@ def get_parameter_value_by_name(name, executor, program=None):
SUCCESS
=
"_SUCCESS"
BEGIN_SECS
=
time
.
time
()
def
save_checkpoint
(
executor
,
dirname
,
keep_max
=
10
,
keep_max
=
3
,
save_secs
=
600
,
main_program
=
None
):
"""
...
...
@@ -470,38 +469,70 @@ def save_checkpoint(executor,
:param dirname
:param keep_max
:param save_secs
:param main_program
"""
if
dirname
is
None
:
raise
Exception
(
"save checkpoint dir can not be none"
)
if
not
os
.
path
.
isdir
(
dirname
):
os
.
makedirs
(
dirname
)
serial
=
_get_lastest_checkpoint_dir
(
dirname
)
+
1
cur_dir
=
os
.
path
.
join
(
dirname
,
serial
)
global
BEGIN_SECS
if
time
.
time
()
-
BEGIN_SECS
<
save_secs
:
return
BEGIN_SECS
=
time
.
time
()
serial
=
_get_lastest_checkpoint_dir
(
dirname
)
+
1
cur_dir
=
os
.
path
.
join
(
dirname
,
str
(
serial
))
save_persistables
(
executor
,
cur_dir
,
main_program
)
_write_success
(
cur_dir
)
_lru_delete
(
dirname
,
keep_max
)
def
restore_checkpoint
(
dirname
,
executor
,
main_program
=
None
):
"""
Load Variables from Checkpint Dir
:param dir
:param dirname
:param executor
:param main_program
"""
if
dirname
is
None
and
os
.
path
.
isdir
(
dirname
):
raise
Exception
(
"restore checkpoint can not load variables from %s"
%
dirname
)
serial
=
_get_lastest_checkpoint_dir
(
dirname
)
+
1
serial
=
_get_lastest_checkpoint_dir
(
dirname
)
if
serial
<
-
1
:
if
serial
<
0
:
return
cur_dir
=
os
.
path
.
join
(
dirname
,
s
erial
)
cur_dir
=
os
.
path
.
join
(
dirname
,
s
tr
(
serial
)
)
load_persistables
(
executor
,
cur_dir
,
main_program
)
def
_lru_delete
(
dirname
,
keep_max
=
3
):
"""
retain checkpoint nums with keep_max
"""
dirs
=
os
.
listdir
(
dirname
)
serials
=
[]
for
serial
in
dirs
:
try
:
serials
.
append
(
int
(
serial
))
except
ValueError
:
continue
if
len
(
serials
)
<=
keep_max
:
return
serials
.
sort
(
reverse
=
True
)
serials
=
serials
[
keep_max
:]
for
serial
in
serials
:
cur_dir
=
os
.
path
.
join
(
dirname
,
str
(
serial
))
shutil
.
rmtree
(
cur_dir
)
def
_write_success
(
dirname
):
"""
write _SUCCESS to checkpoint dir
"""
success_file
=
os
.
path
.
join
(
dirname
,
SUCCESS
)
with
open
(
success_file
,
'a'
):
...
...
@@ -513,7 +544,7 @@ def _get_lastest_checkpoint_dir(checkpoint_dir):
get the biggest number in checkpoint_dir, which has _SUCCESS
"""
if
not
checkpoint_dir
.
strip
():
return
""
return
-
1
def
has_success
(
checkpoint_dir
,
cur_dir
):
"""
...
...
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