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[CustomOp] Polish custom api content for performance in dygraph #32209

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Apr 12, 2021
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[CustomOp] Polish custom api content for performance in dygraph #32209

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21 changes: 14 additions & 7 deletions python/paddle/utils/cpp_extension/extension_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -793,22 +793,29 @@ def _custom_api_content(op_name):
params_str, ins_str, attrs_str, outs_str = _get_api_inputs_str(op_name)

API_TEMPLATE = textwrap.dedent("""
from paddle.fluid.core import VarBase
from paddle.fluid.framework import in_dygraph_mode, _dygraph_tracer
from paddle.fluid.layer_helper import LayerHelper

def {op_name}({inputs}):
helper = LayerHelper("{op_name}", **locals())

# prepare inputs and outputs
ins = {ins}
attrs = {attrs}
outs = {{}}
out_names = {out_names}
for out_name in out_names:
# Set 'float32' temporarily, and the actual dtype of output variable will be inferred
# in runtime.
outs[out_name] = helper.create_variable(dtype='float32')

helper.append_op(type="{op_name}", inputs=ins, outputs=outs, attrs=attrs)
# The output variable's dtype use default value 'float32',
# and the actual dtype of output variable will be inferred in runtime.
if in_dygraph_mode():
for out_name in out_names:
outs[out_name] = VarBase()
_dygraph_tracer().trace_op(type="{op_name}", inputs=ins, outputs=outs, attrs=attrs)
else:
helper = LayerHelper("{op_name}", **locals())
for out_name in out_names:
outs[out_name] = helper.create_variable(dtype='float32')

helper.append_op(type="{op_name}", inputs=ins, outputs=outs, attrs=attrs)

res = [outs[out_name] for out_name in out_names]

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