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In place batch_norm #9420

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merged 2 commits into from
Mar 28, 2018
Merged

In place batch_norm #9420

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54a8c04
add inplace attr to bn
Mar 27, 2018
f34f2d4
make bn inplace in img_conv_group by default
Mar 27, 2018
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3 changes: 2 additions & 1 deletion python/paddle/fluid/layers/nn.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1483,6 +1483,7 @@ def batch_norm(input,
param_attr=None,
bias_attr=None,
data_layout='NCHW',
in_place=False,
name=None,
moving_mean_name=None,
moving_variance_name=None):
Expand Down Expand Up @@ -1538,7 +1539,7 @@ def batch_norm(input,
saved_mean = helper.create_tmp_variable(dtype=dtype, stop_gradient=True)
saved_variance = helper.create_tmp_variable(dtype=dtype, stop_gradient=True)

batch_norm_out = helper.create_tmp_variable(dtype)
batch_norm_out = input if in_place else helper.create_tmp_variable(dtype)

helper.append_op(
type="batch_norm",
Expand Down
2 changes: 1 addition & 1 deletion python/paddle/fluid/nets.py
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Expand Up @@ -98,7 +98,7 @@ def __extend_list__(obj):
use_mkldnn=use_mkldnn)

if conv_with_batchnorm[i]:
tmp = layers.batch_norm(input=tmp, act=conv_act)
tmp = layers.batch_norm(input=tmp, act=conv_act, in_place=True)
drop_rate = conv_batchnorm_drop_rate[i]
if abs(drop_rate) > 1e-5:
tmp = layers.dropout(x=tmp, dropout_prob=drop_rate)
Expand Down