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ab210925
编写于
6月 17, 2018
作者:
Y
yuyang18
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3 changed file
with
66 addition
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1 deletion
+66
-1
python/paddle/fluid/recordio_writer.py
python/paddle/fluid/recordio_writer.py
+46
-0
python/paddle/fluid/trainer.py
python/paddle/fluid/trainer.py
+19
-0
python/paddle/fluid/unique_name.py
python/paddle/fluid/unique_name.py
+1
-1
未找到文件。
python/paddle/fluid/recordio_writer.py
浏览文件 @
ab210925
...
...
@@ -36,6 +36,45 @@ def convert_reader_to_recordio_file(
compressor
=
core
.
RecordIOWriter
.
Compressor
.
Snappy
,
max_num_records
=
1000
,
feed_order
=
None
):
"""
Convert a Python Reader to a recordio file.
Please see :ref:`api_guide_python_reader` and :ref:`api_guide_reader_op` for
details.
Examples:
>>> import paddle.fluid as fluid
>>> import paddle.dataset.mnist as mnist
>>> import paddle
>>>
>>> tmp_program = fluid.Program()
>>> with fluid.program_guard(tmp_program):
>>> img = fluid.layers.data(name='img', shape=[784])
>>> label = fluid.layers.data(name='label', shape=[1], dtype='int64')
>>> feeder = fluid.DataFeeder(feed_list=[img, label], place=fluid.CPUPlace())
>>> # mnist.recordio will be generated in current directory
>>> fluid.recordio_writer.convert_reader_to_recordio_file(
>>> filename="mnist.recordio",
>>> reader_creator=paddle.batch(mnist.train(), batch_size=32),
>>> feeder=feeder)
Args:
filename(str): The recordio filename.
reader_creator(callable): The Python Reader Creator. See
:ref:`api_guide_python_reader`.
feeder(DataFeeder): The DataFeeder instance. Used to convert
:code:`reader_creator` to :code: `lod_tensor`
compressor: Must in fluid.core.RecordIOWriter.Compressor.Snappy or
fluid.core.RecordIOWriter.Compressor.NoCompress. Use :code:`Snappy`
by default.
max_num_records(int): Maximum number of records in one chuck. Each record
is each return value from reader function
feed_order(list): The order of variable names that the reader returns
Returns:
int: the number of record that saved.
"""
if
feed_order
is
None
:
feed_order
=
feeder
.
feed_names
counter
=
0
...
...
@@ -58,6 +97,13 @@ def convert_reader_to_recordio_files(
compressor
=
core
.
RecordIOWriter
.
Compressor
.
Snappy
,
max_num_records
=
1000
,
feed_order
=
None
):
"""
convert a python reader to many recordio files.
This API is basically same as :code:`convert_reader_to_recordio_file`,
instead of it will create many recordio files. Each file contains at
most :code:`batch_per_file` records.
"""
if
feed_order
is
None
:
feed_order
=
feeder
.
feed_names
f_name
,
f_ext
=
os
.
path
.
splitext
(
filename
)
...
...
python/paddle/fluid/trainer.py
浏览文件 @
ab210925
...
...
@@ -33,6 +33,13 @@ __all__ = [
class
BeginEpochEvent
(
object
):
"""
The begin of a training epoch.
Args:
epoch_id(int): The current epoch ID.
"""
def
__init__
(
self
,
epoch_id
):
self
.
epoch
=
epoch_id
...
...
@@ -50,10 +57,22 @@ class EndEpochEvent(object):
class
BeginStepEvent
(
object
):
"""
The begin of a training epoch.
Args:
epoch_id(int): The current epoch ID.
step_id(int): The current step ID.
"""
def
__init__
(
self
,
epoch_id
,
step_id
):
self
.
epoch
=
epoch_id
self
.
step
=
step_id
self
.
fetch_metrics
=
True
"""
If fetch_metrics is true, the metrics will be fetched at the
EndStepEvent. Default is True.
"""
class
EndStepEvent
(
object
):
...
...
python/paddle/fluid/unique_name.py
浏览文件 @
ab210925
...
...
@@ -16,7 +16,7 @@ import collections
import
contextlib
import
sys
__all__
=
[
'generate'
,
'switch'
,
'guard'
,
'UniqueNameGenerator'
]
__all__
=
[
'generate'
,
'switch'
,
'guard'
]
class
UniqueNameGenerator
(
object
):
...
...
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