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452fe1e1
编写于
1月 08, 2018
作者:
X
Xi Chen
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init checkin for distributed book chapter 6
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python/paddle/v2/fluid/tests/book_distribute/test_understand_sentiment_conv_dist.py
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python/paddle/v2/fluid/tests/book_distribute/test_understand_sentiment_conv_dist.py
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452fe1e1
from
__future__
import
print_function
import
numpy
as
np
import
paddle.v2
as
paddle
import
paddle.v2.fluid
as
fluid
def
convolution_net
(
data
,
label
,
input_dim
,
class_dim
=
2
,
emb_dim
=
32
,
hid_dim
=
32
):
emb
=
fluid
.
layers
.
embedding
(
input
=
data
,
size
=
[
input_dim
,
emb_dim
])
conv_3
=
fluid
.
nets
.
sequence_conv_pool
(
input
=
emb
,
num_filters
=
hid_dim
,
filter_size
=
3
,
act
=
"tanh"
,
pool_type
=
"sqrt"
)
conv_4
=
fluid
.
nets
.
sequence_conv_pool
(
input
=
emb
,
num_filters
=
hid_dim
,
filter_size
=
4
,
act
=
"tanh"
,
pool_type
=
"sqrt"
)
prediction
=
fluid
.
layers
.
fc
(
input
=
[
conv_3
,
conv_4
],
size
=
class_dim
,
act
=
"softmax"
)
cost
=
fluid
.
layers
.
cross_entropy
(
input
=
prediction
,
label
=
label
)
avg_cost
=
fluid
.
layers
.
mean
(
x
=
cost
)
adam_optimizer
=
fluid
.
optimizer
.
Adam
(
learning_rate
=
0.002
)
optimize_ops
,
params_grads
=
adam_optimizer
.
minimize
(
avg_cost
)
accuracy
=
fluid
.
evaluator
.
Accuracy
(
input
=
prediction
,
label
=
label
)
return
avg_cost
,
accuracy
,
accuracy
.
metrics
[
0
],
optimize_ops
,
params_grads
def
to_lodtensor
(
data
,
place
):
seq_lens
=
[
len
(
seq
)
for
seq
in
data
]
cur_len
=
0
lod
=
[
cur_len
]
for
l
in
seq_lens
:
cur_len
+=
l
lod
.
append
(
cur_len
)
flattened_data
=
np
.
concatenate
(
data
,
axis
=
0
).
astype
(
"int64"
)
flattened_data
=
flattened_data
.
reshape
([
len
(
flattened_data
),
1
])
res
=
fluid
.
LoDTensor
()
res
.
set
(
flattened_data
,
place
)
res
.
set_lod
([
lod
])
return
res
def
main
():
BATCH_SIZE
=
100
PASS_NUM
=
5
word_dict
=
paddle
.
dataset
.
imdb
.
word_dict
()
dict_dim
=
len
(
word_dict
)
class_dim
=
2
data
=
fluid
.
layers
.
data
(
name
=
"words"
,
shape
=
[
1
],
dtype
=
"int64"
,
lod_level
=
1
)
label
=
fluid
.
layers
.
data
(
name
=
"label"
,
shape
=
[
1
],
dtype
=
"int64"
)
cost
,
accuracy
,
acc_out
,
optimize_ops
,
params_grads
=
convolution_net
(
data
,
label
,
input_dim
=
dict_dim
,
class_dim
=
class_dim
)
train_data
=
paddle
.
batch
(
paddle
.
reader
.
shuffle
(
paddle
.
dataset
.
imdb
.
train
(
word_dict
),
buf_size
=
1000
),
batch_size
=
BATCH_SIZE
)
place
=
fluid
.
CPUPlace
()
exe
=
fluid
.
Executor
(
place
)
t
=
fluid
.
DistributeTranspiler
()
# all parameter server endpoints list for spliting parameters
pserver_endpoints
=
os
.
getenv
(
"PSERVERS"
)
# server endpoint for current node
current_endpoint
=
os
.
getenv
(
"SERVER_ENDPOINT"
)
# run as trainer or parameter server
training_role
=
os
.
getenv
(
"TRAINING_ROLE"
,
"TRAINER"
)
# get the training role: trainer/pserver
t
.
transpile
(
optimize_ops
,
params_grads
,
pservers
=
pserver_endpoints
,
trainers
=
2
)
exe
.
run
(
fluid
.
default_startup_program
())
if
training_role
==
"PSERVER"
:
if
not
current_endpoint
:
print
(
"need env SERVER_ENDPOINT"
)
exit
(
1
)
pserver_prog
=
t
.
get_pserver_program
(
current_endpoint
,
optimize_ops
)
exe
.
run
(
pserver_prog
)
elif
training_role
==
"TRAINER"
:
trainer_prog
=
t
.
get_trainer_program
()
feeder
=
fluid
.
DataFeeder
(
feed_list
=
[
data
,
label
],
place
=
place
)
for
pass_id
in
xrange
(
PASS_NUM
):
accuracy
.
reset
(
exe
)
for
data
in
train_data
():
cost_val
,
acc_val
=
exe
.
run
(
trainer_prog
,
feed
=
feeder
.
feed
(
data
),
fetch_list
=
[
cost
,
acc_out
])
pass_acc
=
accuracy
.
eval
(
exe
)
print
(
"cost="
+
str
(
cost_val
)
+
" acc="
+
str
(
acc_val
)
+
" pass_acc="
+
str
(
pass_acc
))
if
cost_val
<
1.0
and
pass_acc
>
0.8
:
exit
(
0
)
else
:
print
(
"environment var TRAINER_ROLE should be TRAINER os PSERVER"
)
if
__name__
==
'__main__'
:
main
()
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