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提交 8b9d33fa 编写于 作者: S sneaxiy
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add unittest and fix bug 

add API.spec
test=develop
上级 e240ba29
显示空白变更内容
内联 并排
Showing with 374 addition and 137 deletion
paddle/fluid/API.spec
浏览文件 @ 8b9d33fa
......@@ -197,6 +197,7 @@ paddle.fluid.layers.bilinear_tensor_product ArgSpec(args=['x', 'y', 'size', 'act
paddle.fluid.layers.merge_selected_rows ArgSpec(args=['x', 'name'], varargs=None, keywords=None, defaults=(None,))
paddle.fluid.layers.get_tensor_from_selected_rows ArgSpec(args=['x', 'name'], varargs=None, keywords=None, defaults=(None,))
paddle.fluid.layers.lstm ArgSpec(args=['input', 'init_h', 'init_c', 'max_len', 'hidden_size', 'num_layers', 'dropout_prob', 'is_bidirec', 'is_test', 'name', 'default_initializer', 'seed'], varargs=None, keywords=None, defaults=(0.0, False, False, None, None, -1))
paddle.fluid.layers.py_func ArgSpec(args=['func', 'x', 'out', 'backward_func', 'skip_vars_in_backward_input'], varargs=None, keywords=None, defaults=(None, None))
paddle.fluid.layers.data ArgSpec(args=['name', 'shape', 'append_batch_size', 'dtype', 'lod_level', 'type', 'stop_gradient'], varargs=None, keywords=None, defaults=(True, 'float32', 0, VarType.LOD_TENSOR, True))
paddle.fluid.layers.open_files ArgSpec(args=['filenames', 'shapes', 'lod_levels', 'dtypes', 'thread_num', 'buffer_size', 'pass_num', 'is_test'], varargs=None, keywords=None, defaults=(None, None, 1, None))
paddle.fluid.layers.read_file ArgSpec(args=['reader'], varargs=None, keywords=None, defaults=None)
......
paddle/fluid/operators/py_func_op.cc
浏览文件 @ 8b9d33fa
......@@ -26,26 +26,35 @@ namespace py = pybind11;
static std::vector<py::object> g_py_callables;
const char kForwardPythonCallableId[] = "forward_callable_id";
const char kBackwardPythonCallableId[] = "backward_callable_id";
const char kPyFuncBackwardSkipVars[] = "backward_skip_vars";
size_t AppendPythonCallableObjectAndReturnId(py::object py_obj) {
g_py_callables.emplace_back(py_obj);
return g_py_callables.size() - 1;
}
static py::object *GetPythonCallableObject(size_t i) {
PADDLE_ENFORCE_LT(i, g_py_callables.size());
PADDLE_ENFORCE_LT(i, g_py_callables.size(), "Invalid python callable id");
return &g_py_callables[i];
}
void CallPythonFunc(py::object *callable, const std::string &func_token,
std::string PythonObjectToString(const py::object &py_callable) {
py::gil_scoped_acquire guard;
return py::str(*py_callable);
}
void CallPythonFunc(py::object *callable,
const std::vector<framework::LoDTensor> &ins,
std::vector<framework::LoDTensor *> *out) {
py::gil_scoped_acquire guard{};
py::gil_scoped_acquire guard;
py::tuple in_args(ins.size());
for (size_t i = 0; i < ins.size(); ++i) {
in_args[i] = ins[i].IsInitialized() ? py::cast(ins[i]) : py::cast(nullptr);
}
auto ret = (*callable)(func_token, *in_args);
auto ret = (*callable)(*in_args);
auto ret_tuple = py::cast<py::tuple>(ret);
PADDLE_ENFORCE_EQ(py::len(ret_tuple), out->size(), "Output number not match");
for (size_t i = 0; i < out->size(); ++i) {
......@@ -55,7 +64,7 @@ void CallPythonFunc(py::object *callable, const std::string &func_token,
try {
auto *out_tensor = py::cast<framework::LoDTensor *>(ret_tuple[i]);
PADDLE_ENFORCE_NOT_NULL(out_tensor,
"Output tensor should not be nullptr");
"Output tensor %d should not be nullptr", i);
(*out)[i]->set_lod(out_tensor->lod());
(*out)[i]->ShareDataWith(*out_tensor);
} catch (py::cast_error &) {
......@@ -69,26 +78,23 @@ class PyFuncOpShapeInference : public framework::InferShapeBase {
void operator()(framework::InferShapeContext *ctx) const override {
PADDLE_ENFORCE(!ctx->IsRuntime(),
"Infer shape cannot be called in runtime.");
PADDLE_ENFORCE(ctx->HasInputs("X"), "Input(X) must exist");
PADDLE_ENFORCE(ctx->HasOutputs("Out"), "Output(Out) must exist");
PADDLE_ENFORCE(ctx->HasInputs("X") || ctx->HasOutputs("Out"),
"Input(X) or Output(Out) must exist");
PADDLE_ENFORCE_GE(ctx->Attrs().Get<int>(kForwardPythonCallableId), 0,
"Function id cannot be less than 0");
auto *op = boost::get<const framework::OpDesc *>(ctx->GetOp());
auto *block = op->Block();
// No need to infer shape in forward part
if (block->ForwardBlockID() < 0) {
return;
}
PADDLE_ENFORCE(!ctx->Attrs().Get<std::string>("token").empty(),
"Function token cannot be empty");
const std::string kGradVarSuffix = framework::kGradVarSuffix;
auto out_vars = ctx->GetOutputVarPtrs("Out");
for (auto &out_var : out_vars) {
auto *out_var_desc = boost::get<framework::VarDesc *>(out_var);
if (out_var_desc == nullptr) {
continue;
}
auto out_name = out_var_desc->Name();
if (out_name == framework::kEmptyVarName ||
out_name.size() < kGradVarSuffix.size()) {
out_name.size() <= kGradVarSuffix.size()) {
continue;
}
......@@ -98,6 +104,8 @@ class PyFuncOpShapeInference : public framework::InferShapeBase {
auto *in_var_desc = block->FindVarRecursive(fwd_var_name);
PADDLE_ENFORCE_NOT_NULL(in_var_desc, "Forward variable %s not found",
fwd_var_name);
VLOG(10) << "Infer shape of Out(" << out_name << ") as Input("
<< in_var_desc->Name() << ")";
out_var_desc->SetShape(in_var_desc->GetShape());
out_var_desc->SetDataType(in_var_desc->GetDataType());
out_var_desc->SetLoDLevel(in_var_desc->GetLoDLevel());
......@@ -112,13 +120,15 @@ class PyFuncOpMaker : public framework::OpProtoAndCheckerMaker {
void Make() override {
AddInput("X", "Inputs of py_func op.").AsDuplicable();
AddOutput("Out", "Outputs of py_func op").AsDuplicable();
AddAttr<int>("handle_idx", "Index of the registered py_func handle")
AddAttr<int>(kForwardPythonCallableId,
"Index of registered forward Python function.")
.SetDefault(0);
AddAttr<std::string>("token", "Token of function token to be called")
.SetDefault("");
AddAttr<std::string>("backward_token",
"Token of backward function to be called")
.SetDefault("");
AddAttr<int>(kBackwardPythonCallableId,
"Index of registered backward Python function")
.SetDefault(-1);
AddAttr<std::vector<std::string>>(kPyFuncBackwardSkipVars,
"Unused forward in/out in backward op")
.SetDefault(std::vector<std::string>());
AddComment(R"DOC("PyFunc Op")DOC");
}
};
......@@ -129,7 +139,8 @@ class PyFuncOpGradDescMaker : public framework::GradOpDescMakerBase {
std::vector<std::unique_ptr<framework::OpDesc>> operator()() const override {
auto &fwd_attrs = Attrs();
if (fwd_attrs.at("backward_token").empty()) {
// no backward op when backward_id is less than 0
if (boost::get<int>(fwd_attrs.at(kBackwardPythonCallableId)) < 0) {
return {};
}
......@@ -137,36 +148,65 @@ class PyFuncOpGradDescMaker : public framework::GradOpDescMakerBase {
grad_op->SetType("py_func");
framework::AttributeMap bwd_attrs;
bwd_attrs["token"] = fwd_attrs.at("backward_token");
bwd_attrs["backward_token"] = std::string("");
bwd_attrs[kForwardPythonCallableId] =
fwd_attrs.at(kBackwardPythonCallableId);
bwd_attrs[kBackwardPythonCallableId] = -1;
grad_op->SetAttrMap(bwd_attrs);
auto bwd_in = Input("X");
auto fwd_out = Output("Out");
auto fwd_out_grad = OutputGrad("Out");
bwd_in.insert(bwd_in.end(), fwd_out.begin(), fwd_out.end());
bwd_in.insert(bwd_in.end(), fwd_out_grad.begin(), fwd_out_grad.end());
// All forward inputs
auto fwd_ins = Input("X");
// All forward outputs
auto fwd_outs = Output("Out");
// For memory reused, some inputs/output in forward part may be not needed
// in backward part
// Just skip these vars
auto &backward_skip_var_list = boost::get<std::vector<std::string>>(
fwd_attrs.at(kPyFuncBackwardSkipVars));
std::unordered_set<std::string> backward_skip_var_set(
backward_skip_var_list.begin(), backward_skip_var_list.end());
std::vector<std::string> bwd_ins;
bwd_ins.reserve(fwd_ins.size() + fwd_outs.size());
for (auto &fwd_in : fwd_ins) {
if (backward_skip_var_set.count(fwd_in) == 0) {
bwd_ins.emplace_back(fwd_in);
}
}
for (auto &fwd_out : fwd_outs) {
if (backward_skip_var_set.count(fwd_out) == 0) {
bwd_ins.emplace_back(fwd_out);
}
}
// Backward OG cannot be skipped
// But in Python side, if OG is kEmptyVarName, input tensor would be None
auto fwd_out_grads = OutputGrad("Out");
bwd_ins.reserve(bwd_ins.size() + fwd_out_grads.size());
bwd_ins.insert(bwd_ins.end(), fwd_out_grads.begin(), fwd_out_grads.end());
auto bwd_out = InputGrad("X", false);
// Backward IG cannot be skipped
// But in Python side, if IG is not needed, users can just return None
auto bwd_outs = InputGrad("X", false);
if (VLOG_IS_ON(10)) {
std::string in_str = "PyFunc Grad Input: ";
for (auto &in : bwd_in) {
for (auto &in : bwd_ins) {
in_str += in;
in_str += " ";
}
VLOG(10) << in_str;
std::string out_str = "PyFunc Grad Output: ";
for (auto &out : bwd_out) {
for (auto &out : bwd_outs) {
out_str += out;
out += " ";
out_str += " ";
}
VLOG(10) << out_str;
}
grad_op->SetInput("X", bwd_in);
grad_op->SetOutput("Out", InputGrad("X", false));
grad_op->SetInput("X", bwd_ins);
grad_op->SetOutput("Out", bwd_outs);
std::vector<std::unique_ptr<framework::OpDesc>> ret(1);
ret[0] = std::move(grad_op);
......@@ -210,12 +250,11 @@ class PyFuncOp : public framework::OperatorBase {
outputs[i] = out_tensor;
}
auto &token = Attr<std::string>("token");
auto handle_idx = static_cast<size_t>(Attr<int>("handle_idx"));
auto *py_callable = GetPythonCallableObject(handle_idx);
VLOG(10) << "Call py_func_op with token " << token << ", and handle_idx "
<< handle_idx;
CallPythonFunc(py_callable, token, inputs, &outputs);
auto callable_id = static_cast<size_t>(Attr<int>(kForwardPythonCallableId));
auto *py_callable = GetPythonCallableObject(callable_id);
VLOG(10) << "Call py_func_op with id " << callable_id << ": "
<< PythonObjectToString(*py_callable);
CallPythonFunc(py_callable, inputs, &outputs);
}
};
......
python/paddle/fluid/layers/nn.py
浏览文件 @ 8b9d33fa
......@@ -9087,63 +9087,53 @@ def get_tensor_from_selected_rows(x, name=None):
return out
@templatedoc()
def py_func(func, x, out, backward_func=None):
"""
"""
class PyFuncWrapper(object):
_register_funcs = []
class PyFuncRegister(object):
_main_program_to_register = dict()
def __init__(self, func):
if func is None or not hasattr(func, '__call__'):
raise TypeError('func must be a Python function')
self._func = func
# find named args using reflection
self._named_args = inspect.getargspec(self._func)[0]
self._id = core.append_python_callable_object_and_return_id(self)
'''
Why record self here?
1. For debug usage. Users can call
:code:`py_func.registered_func(idx)` method
to find the registered function coresponding
to :code:`idx`.
2. For increasing reference count of self.
It seems that to release Python object
whose reference count is 1 would cause
segmentation fault error in C++ side.
May be lack of Python GC in C++ side?
'''
PyFuncWrapper._register_funcs.append(self)
@classmethod
def get_instance(cls, prog):
if not isinstance(prog, Program):
raise TypeError("prog must be type of Program")
def registered_func(cls, idx):
return cls._register_funcs[idx]._func
ret = cls._main_program_to_register.get(prog, None)
if ret is None:
ret = PyFuncRegister()
ret._idx = core.append_python_callable_object_and_return_id(ret)
ret._token_func_dict = dict()
ret._func_token_dict = dict()
cls._main_program_to_register[prog] = ret
return ret
@classmethod
def registered_func_num(cls):
return len(cls._register_funcs)
@property
def handle_idx(self):
return self._idx
def unique_token(self, func):
return self._register_func(func)
def _register_func(self, func):
if func is None:
raise ValueError("func cannot be None")
def id(self):
return self._id
token = self._func_token_dict.get(func, None)
if token is not None:
return token
token = unique_name.generate('py_func_op_token')
self._token_func_dict[token] = func
self._func_token_dict[func] = token
return token
def __call__(self, token, *args):
func = self._token_func_dict.get(token, None)
if func is None:
raise ValueError("func has not been registered")
arg_list = inspect.getargspec(func)
def __call__(self, *args):
kwargs = dict()
idx = 0
for arg in arg_list[0]:
for arg in self._named_args:
kwargs[arg] = args[idx]
idx += 1
args = args[idx:]
ret0 = func(*args, **kwargs)
ret0 = self._func(*args[idx:], **kwargs)
if ret0 is None:
return None
......@@ -9171,20 +9161,66 @@ def py_func(func, x, out, backward_func=None):
return tuple(ret)
@templatedoc()
def py_func(func, x, out, backward_func=None, skip_vars_in_backward_input=None):
"""
PyFunc Operator.
User can use :code:`py_func` to register operators in Python side.
The inputs of :code:`func` is :code:`LoDTensor` and outputs can be
numpy array or :code:`LoDTensor`. Paddle would call the registered
:code:`func` in forward part, and call :code:`backward_func` in
backward part (if :code:`backward_func` is not None).
User should set the right data type and shape of :code:`out` before
calling this function. However, data types and shapes of gradients of
:code:`out` and :code:`x` would be infered automatically.
The orders of inputs of :code:`backward_func` would be: forward input
:code:`x`, forward output :code:`out` and backward input gradient of
:code:`out`. If some variables of :code:`out` have no gradient, the input
tensor would be None in Python side. If some variables of :code:`in` have
no gradient, users should return None.
Args:
func (callable): forward Python function.
x (Variable|list(Variable)|tuple(Variable)): inputs of :code:`func`.
out (Variable|list(Variable)|tuple(Variable)): outputs of :code:`func`.
Paddle cannot infer shapes and data types of :code:`out`. Users
should create :code:`out` beforehand.
backward_func (callable|None): backward Python function.
None means no backward. Default None.
skip_vars_in_backward_input (Variable|list(Variable)|tuple(Variable)):
Variables that are not needed in :code:`backward_func` inputs.
These variables must be any of :code:`x` and :code:`out`.
If set, these vars would not be inputs of :code:`backward_func`,
Only useful when :code:`backward_func` is not None. Default None.
Returns:
out (Variable|list(Variable)|tuple(Variable)): input :code:`out`
"""
helper = LayerHelper('py_func', **locals())
if isinstance(x, Variable):
if x is None:
x = []
elif isinstance(x, Variable):
x = [x]
elif not isinstance(x, (list, tuple)):
raise TypeError('Input must be Variable/list(Variable)/tuple(Variable)')
if isinstance(out, Variable):
if out is None:
out_list = []
elif isinstance(out, Variable):
out_list = [out]
else:
elif isinstance(out, (list, tuple)):
out_list = out
else:
raise TypeError(
'Output must be Variable/list(Variable)/tuple(Variable)')
if func is None or not hasattr(func, '__call__'):
raise TypeError('Input func must be a function')
if backward_func is not None and not hasattr(backward_func, '__call__'):
raise TypeError('Input backward_func must be a function')
fwd_func_id = PyFuncWrapper(func).id
bwd_func_id = PyFuncWrapper(
backward_func).id if backward_func is not None else -1
for each_out in out_list:
if len(each_out.shape) == 0:
......@@ -9192,18 +9228,34 @@ def py_func(func, x, out, backward_func=None):
'Output shapes of py_func op should be provided by users manually'
)
py_func_reg = PyFuncRegister.get_instance(helper.main_program)
forward_token = py_func_reg.unique_token(func)
backward_token = py_func_reg.unique_token(
backward_func) if backward_func is not None else ''
backward_skip_vars = set()
if backward_func is not None and skip_vars_in_backward_input is not None:
if isinstance(skip_vars_in_backward_input, Variable):
skip_vars_in_backward_input = [skip_vars_in_backward_input]
fwd_in_out = [v.name for v in x]
fwd_in_out.extend([v.name for v in out_list])
fwd_in_out = set(fwd_in_out)
backward_skip_vars = set()
for v in skip_vars_in_backward_input:
if not v.name in fwd_in_out:
raise ValueError(
'Variable {} is not found in forward inputs and outputs'
.format(v.name))
backward_skip_vars.add(v.name)
helper.append_op(
type='py_func',
inputs={'X': x},
outputs={'Out': out_list},
attrs={
'handle_idx': py_func_reg.handle_idx,
'token': forward_token,
'backward_token': backward_token
'forward_callable_id': fwd_func_id,
'backward_callable_id': bwd_func_id,
'backward_skip_vars': list(backward_skip_vars)
})
return out
# For debug usage
py_func.registered_func = PyFuncWrapper.registered_func
py_func.registered_func_num = PyFuncWrapper.registered_func_num
python/paddle/fluid/tests/unittests/test_py_func_op.py 0 → 100644
浏览文件 @ 8b9d33fa
# Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import paddle.fluid as fluid
import paddle
import unittest
import six
import numpy as np
def tanh(x):
return np.tanh(x)
def tanh_grad(y, dy):
return np.array(dy) * (1 - np.square(np.array(y)))
def cross_entropy(logits, labels):
logits = np.array(logits)
labels = np.array(labels)
M = logits.shape[0]
N = logits.shape[1]
ret = np.ndarray([M, 1]).astype(logits.dtype)
for idx in six.moves.range(M):
ret[idx][0] = -np.log(logits[idx][labels[idx][0]])
return ret
def cross_entropy_grad(logits, labels, bwd_dout):
logits = np.array(logits)
labels = np.array(labels)
bwd_dout = np.array(bwd_dout)
M = logits.shape[0]
N = logits.shape[1]
dlogits = np.zeros([M, N]).astype(logits.dtype)
for idx in six.moves.range(M):
dlogits[idx][labels[idx][0]] = -bwd_dout[idx] / logits[idx][labels[idx][
0]]
return dlogits, None
def simple_fc_net(img, label, use_py_func_op):
hidden = img
for idx in range(4):
hidden = fluid.layers.fc(
hidden,
size=200,
bias_attr=fluid.ParamAttr(
initializer=fluid.initializer.Constant(value=1.0)))
if use_py_func_op:
hidden = fluid.layers.tanh(hidden)
else:
new_hidden = fluid.default_main_program().current_block(
).create_var(
name='hidden_{}'.format(idx),
dtype='float32',
shape=hidden.shape)
hidden = fluid.layers.py_func(
func=tanh,
x=hidden,
out=new_hidden,
backward_func=tanh_grad,
skip_vars_in_backward_input=hidden)
prediction = fluid.layers.fc(hidden, size=10, act='softmax')
if not use_py_func_op:
loss = fluid.layers.cross_entropy(input=prediction, label=label)
else:
loss = fluid.default_main_program().current_block().create_var(
name='loss', dtype='float32', shape=[-1, 1])
fluid.layers.py_func(
func=cross_entropy,
x=[prediction, label],
out=loss,
backward_func=cross_entropy_grad,
skip_vars_in_backward_input=loss)
loss = fluid.layers.mean(loss)
return loss
def reader():
for _ in six.moves.range(100):
yield np.random.random([784]), np.random.random_integers(
size=[1], low=0, high=9)
def test_main(use_cuda, use_py_func_op):
if use_cuda and not fluid.core.is_compiled_with_cuda():
return None
with fluid.program_guard(fluid.Program(), fluid.Program()):
with fluid.scope_guard(fluid.core.Scope()):
fluid.default_main_program().random_seed = 1
fluid.default_startup_program().random_seed = 1
np.random.seed(1)
img = fluid.layers.data(name='image', shape=[784], dtype='float32')
label = fluid.layers.data(name='label', shape=[1], dtype='int64')
loss = simple_fc_net(img, label, use_py_func_op)
optimizer = fluid.optimizer.SGD(learning_rate=1e-3)
optimizer.minimize(loss)
place = fluid.CUDAPlace(0) if use_cuda else fluid.CPUPlace()
feeder = fluid.DataFeeder(feed_list=[img, label], place=place)
r = paddle.batch(reader, batch_size=10)
exe = fluid.Executor(place)
exe.run(fluid.default_startup_program())
ret = []
for epoch_id in six.moves.range(2):
for d in r():
L, = exe.run(feed=feeder.feed(d), fetch_list=[loss])
ret.append(L[0])
return np.array(ret)
class TestPyFuncOp(unittest.TestCase):
def test_loss_diff(self):
losses = []
for use_cuda in [True, False]:
for use_py_func_op in [True, False]:
L = test_main(use_cuda, use_py_func_op)
if L is not None:
losses.append(L)
for idx in six.moves.range(len(losses) - 1):
max_diff = np.max(np.abs(losses[idx] - losses[0]))
self.assertAlmostEqual(max_diff, 0, delta=1e-3)
if __name__ == '__main__':
unittest.main()
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