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fix fetch op rename_input bug in QAT export model #38012

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Dec 10, 2021
Merged

fix fetch op rename_input bug in QAT export model #38012

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11 changes: 8 additions & 3 deletions python/paddle/fluid/contrib/slim/quantization/imperative/qat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -484,7 +484,7 @@ def save_quantized_model(self, model, path, input_spec=None, **config):
model_filename=model_filename,
params_filename=params_filename))

self._gather_scales(infer_program, scope)
self._gather_scales(infer_program, scope, fetch_targets)

self._set_skip_quant_attr(infer_program)

Expand Down Expand Up @@ -520,10 +520,10 @@ def _is_target_layer(self, layer):

return flag

def _gather_scales(self, program, scope):
def _gather_scales(self, program, scope, fetch_targets):
"""
Get all scales from fake ops, save them into the corresponding ops
and delete all moving_average_abs_max_scale ops.
and delete all moving_average_abs_max_scale ops.
"""

def _gather_input_scale():
Expand Down Expand Up @@ -580,6 +580,11 @@ def _gather_output_scale():

for next_op in next_ops:
next_op._rename_input(out_var_name, in_var_name)
# If next_op is `fetch` and out_var_name in fetch_targets,
# fetch_targets must update to in_var_name when rename input.
for i in range(len(fetch_targets)):
if fetch_targets[i].name == out_var_name:
fetch_targets[i] = block.var(in_var_name)

_gather_input_scale()
_gather_output_scale()
Expand Down