def _to_variable(x, x_desc=None, x_name=None, x_idx=None):
if isinstance(x, np.ndarray):
out = fluid.data(name=x_name if x_idx is None else
(x_name + "_" + str(x_idx)),
shape=([None] + list(x.shape[1:]))
if x_desc is None else x_desc.shape,
dtype=x.dtype)
# set the way to get input data, then we can use it to
# extract data from args and kwargs when running __call__
if is_default: # for defaults
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: input
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
input)[x_idx]
elif input_idx is None: # for named arg
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: kwargs[
input_name]
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
kwargs[input_name])[x_idx]
else: # for positional arg
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: args[
input_idx]
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
args[input_idx])[x_idx]
self._inputs[out.name] = data_extracter
else:
out = x
return out
def _hash_spec_names(args_specs, kwargs_specs):
"""
Generater hash spec with args/kwargs InputSpec names.
Consider the following InputSpecs with same shape/dtype except for name:
1. [InputSpec([3,3], 'float32', 'x'), InputSpec([3,3], 'float32', 'x')]
2. [InputSpec([3,3], 'float32', 'x'), InputSpec([3,3], 'float32', 'y')]
Under @to_static, we should generate two different program not just one, because
the former has one input ('x'), but the latter has two input ('x', 'y').
"""
spec_names = [
spec.name for spec in flatten(args_specs)
if isinstance(spec, paddle.static.InputSpec)
]
spec_names += [
spec.name for spec in flatten(kwargs_specs)
if isinstance(spec, paddle.static.InputSpec)
]
i, name_ids = 0, {}
def to_idx(name):
nonlocal i
if name not in name_ids:
name_ids[name] = i
i += 1
return name_ids[name]
value = [to_idx(name) for name in spec_names]
return tuple(value)
def _convert_input(self,
input,
input_name,
input_idx,
is_default=False):
def _to_variable(x, x_desc=None, x_name=None, x_idx=None):
if isinstance(x, np.ndarray):
out = fluid.data(name=x_name if x_idx is None else
(x_name + "_" + str(x_idx)),
shape=([None] + list(x.shape[1:]))
if x_desc is None else x_desc.shape,
dtype=x.dtype)
# set the way to get input data, then we can use it to
# extract data from args and kwargs when running __call__
if is_default: # for defaults
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: input
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
input)[x_idx]
elif input_idx is None: # for named arg
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: kwargs[
input_name]
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
kwargs[input_name])[x_idx]
else: # for positional arg
if x_idx is None: # if input is plain
data_extracter = lambda args, kwargs: args[
input_idx]
else: # if input is nested structure
data_extracter = lambda args, kwargs: flatten(
args[input_idx])[x_idx]
self._inputs[out.name] = data_extracter
else:
out = x
return out
input_desc = model_self._data_descs.get(input_name, None)
if not utils.is_sequence(input):
return _to_variable(input, input_desc, input_name)
flat_output = []
if input_desc is None:
for i, x in enumerate(flatten(input)):
out = _to_variable(x, x_name=input_name, x_idx=i)
flat_output.append(out)
else:
for i, x in enumerate(
zip(flatten(input), flatten(input_desc))):
out = _to_variable(*x, x_name=input_name, x_idx=i)
flat_output.append(out)
output = pack_sequence_as(input, flat_output)
return output
def concrete_program_specify_input_spec(self, input_spec=None):
"""
Returns recent ConcreteProgram instance of decorated function while
specifying input_spec. If the self._function_spec already has
input_spce, it will check the compatibility of input input_spec and
the self._function_spec.input_spec. If input input_spec=None, then
this method uses self._function_spec.input_spec
args:
input_spec (list[InputSpec], optional): Describes the input of
the translate function.
"""
# if specific the `input_spec`, the length of program_cache will always 1,
# else, return the last one.
cached_program_len = len(self._program_cache)
# If specific `input_spec`, apply convertion from dygraph layers into static Program.
if cached_program_len == 0:
desired_input_spec = input_spec
if self._function_spec.input_spec is not None:
if input_spec is not None and not input_specs_compatible(
flatten(input_spec),
flatten(self._function_spec.input_spec)):
raise ValueError(
"The `input_spec`: {} used to construct concrete_program is conflict with the `input_spec`: {} in `@paddle.jit.to_static`"
.format(input_spec, self._function_spec.input_spec))
# NOTE(chenweihang): we should always translated program based on the `input_spec`
# decorated on forward if it is valid
desired_input_spec = self._function_spec.input_spec
if input_spec is not None:
logging_utils.warn(
"\n\nYou have specified `input_spec` both in function definition (higher priority) and `paddle.jit.save` (will be ignored.)\n\n\t Using: {}\n\n\t Ignore: {}\n"
.format(desired_input_spec, input_spec))
has_input_spec = (desired_input_spec is not None)
if has_input_spec:
concrete_program, _ = self.get_concrete_program(
*desired_input_spec)
return concrete_program
else:
raise ValueError(
"No valid transformed program for {}.\n\t Please specific `input_spec` in `@paddle.jit.to_static` or feed input tensor to call the decorated function at once.\n"
.format(self._function_spec))
# If more than one programs have been cached, return the recent converted program by default.
elif cached_program_len > 1:
logging_utils.warn(
"Current {} has more than one cached programs: {}, the last traced progam will be return by default."
.format(self._function_spec, cached_program_len))
cache_key, (concrete_program,
partial_layer) = self._program_cache.last()
return concrete_program
def test_nest(self):
dygraph_res = self._run(to_static=False)
dygraph_res = flatten(dygraph_res)
static_res = self._run(to_static=True)
static_res = flatten(static_res)
self.assertTrue(len(dygraph_res) == len(static_res))
for dy_var, st_var in zip(dygraph_res, static_res):
if isinstance(dy_var, fluid.core.VarBase):
self.assertTrue(np.allclose(dy_var.numpy(), st_var.numpy()))
else:
self.assertTrue(dy_var, st_var)
def to_static_inputs_with_spec(self, input_with_spec, main_program):
"""
Constructs feed layer by inputs with InputSpec information for main program.
Args:
input_with_spec(tuple): input arguments by replacing argument with InputSpec.
main_program(Program): main program for inserting feed layer.
"""
flat_input_spec = flatten(input_with_spec)
inputs = []
block = main_program.global_block()
for i, var_spec in enumerate(flat_input_spec):
if isinstance(var_spec, paddle.static.InputSpec):
feed_layer = block.create_var(
# TODO(Aurelius84): consider a more elegant way to name this
name=var_spec.name or "feed_%s" % i,
shape=var_spec.shape,
dtype=var_spec.dtype,
is_data=True,
need_check_feed=False)
else:
feed_layer = var_spec
inputs.append(feed_layer)
return pack_sequence_as(input_with_spec, inputs)
def main(args):
place = set_device(args.device)
fluid.enable_dygraph(place) if args.dynamic else None
inputs = [
Input(
[None, None], 'int64', name='words'), Input(
[None], 'int64', name='length')
]
dataset = LacDataset(args)
predict_dataset = LacDataLoader(args, place, phase="predict")
vocab_size = dataset.vocab_size
num_labels = dataset.num_labels
model = SeqTagging(args, vocab_size, num_labels, mode="predict")
model.mode = "test"
model.prepare(inputs=inputs)
model.load(args.init_from_checkpoint, skip_mismatch=True)
f = open(args.output_file, "wb")
for data in predict_dataset.dataloader:
if len(data) == 1:
input_data = data[0]
else:
input_data = data
results, length = model.test_batch(inputs=flatten(input_data))
for i in range(len(results)):
word_len = length[i]
word_ids = results[i][:word_len]
tags = [dataset.id2label_dict[str(id)] for id in word_ids]
f.write("\002".join(tags) + "\n")
def _prepare(self, inputs):
"""
Prepare inputs, outputs, attrs.
"""
assert isinstance(inputs, (tuple, list))
# Flatten inputs with nested structure into single list.
flatten_inputs = flatten(inputs)
# Convert variable into VarBase and feed in training data.
input_vars = []
expected_place = framework._current_expected_place()
for i, value in enumerate(flatten_inputs):
if isinstance(value, np.ndarray):
var = None
if not framework._in_eager_mode_:
var = core.VarBase(value=value,
name=self._inputs[i].desc.name(),
persistable=False,
place=expected_place,
zero_copy=True)
else:
var = core.eager.Tensor(value=value,
name=self._inputs[i].desc.name(),
persistable=False,
place=expected_place,
zero_copy=True)
elif isinstance(value, (core.VarBase, core.eager.Tensor)):
# NOTE(Aurelius84): If var is on CPUPlace, it will be transformed multi times
# into CUDAPlace when it's as input of multi Ops. so we move it in advance
# to avoid this problem.
if value.stop_gradient and not value.place._equals(
expected_place):
var = value._copy_to(expected_place, False)
var.stop_gradient = True
else:
var = value
var.name = self._inputs[i].desc.name()
else:
continue
input_vars.append(var)
def create_out(var_id):
var = self._outputs[var_id]
assert isinstance(var, framework.Variable)
var_desc = var.desc
varbase = None
if not framework._in_eager_mode_:
var_base = core.VarBase(var_desc.dtype(), var_desc.shape(),
var_desc.name(), var_desc.type(),
False)
else:
var_base = core.eager.Tensor(var_desc.dtype(),
var_desc.shape(), var_desc.name(),
var_desc.type(), False)
return var_base
# Create VarBase to receive output data.
out_vars = list(map(create_out, self._outputs.var_ids))
return input_vars, out_vars
def test_nest_output(self):
x = fluid.dygraph.to_variable(
np.random.random((4, 8)).astype('float32'))
net = LinearNetWithNestOut(8, 8)
dy_outs = flatten(net(x))
net = declarative(net, input_spec=[InputSpec([None, 8], name='x')])
model_path = "net_with_nest_out/model"
paddle.jit.save(net, model_path)
load_net = paddle.jit.load(model_path)
load_outs = flatten(load_net(x))
self.assertTrue(len(dy_outs) == 4)
for dy_out, load_out in zip(dy_outs, load_outs):
self.assertTrue(np.allclose(dy_out.numpy(), load_out.numpy()))
def batch_data_generator():
for data in self.dataset:
data = flatten(data)
partial_data = []
for d in data:
assert d.shape[0] % self.dp_world_size == 0, \
"Please padding dataset with data parallel size"
partial_data.append(
np.split(d, self.dp_world_size)[self.dp_rank])
yield partial_data[:len(self.feed_list)]
def inputs(self):
"""
Returns input tensors of recent converted static program.
"""
concrete_program = self.concrete_program
inputs = [
var for var in flatten(concrete_program.inputs)
if isinstance(var, framework.Variable)
]
return inputs
def __init__(self, function, input_spec=None):
self._dygraph_function = function
if input_spec is None:
self._input_spec = None
self._flat_input_spec = None
else:
self._input_spec = self._verify_input_spec(input_spec)
self._flat_input_spec = flatten(self._input_spec)
# parse full argument names list.
self._arg_names, self._default_kwargs = parse_arg_and_kwargs(function)
def test_run(self):
# Must using with program_guard(), otherwise prim ops will append other block
with paddle.static.program_guard(self.main_program,
self.startup_program):
ad = Transform(self.main_program.block(0))
orig_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(orig_ops), sorted(self.orig_ops))
# Test orig2prim
orig2prim(block=self.main_program.block(0))
orig2prim_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(orig2prim_ops), sorted(self.orig2prim_ops))
# Test linearize
xs_dot, ys_dot = ad.linearize(self.orig_xs, self.orig_ys)
linearize_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(linearize_ops), sorted(self.linearize_ops))
flatten_xs_dot = flatten(xs_dot)
for k, v in self.xs_shape_map.items():
self.assertEqual(flatten_xs_dot[k].shape, v)
flatten_ys_dot = flatten(ys_dot)
for k, v in self.ys_shape_map.items():
self.assertEqual(flatten_ys_dot[k].shape, v)
# Test transpose
ys_bar, xs_bar = ad.transpose(ys_dot, xs_dot, retain_fwd=False)
transpose_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(transpose_ops), sorted(self.transpose_ops))
flatten_xs_bar = flatten(xs_bar)
for k, v in self.xs_shape_map.items():
# There may be None in the result of transpose like gather op
if flatten_xs_bar[k] is not None:
self.assertEqual(flatten_xs_bar[k].shape, v)
flatten_ys_bar = flatten(ys_bar)
for k, v in self.ys_shape_map.items():
self.assertEqual(flatten_ys_bar[k].shape, v)
# Test prim2orig
prim2orig(block=self.main_program.block(0))
prim2orig_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(prim2orig_ops), sorted(self.prim2orig_ops))
def _replace_value_with_input_spec(self, args):
args_with_spec = []
for idx, input_var in enumerate(flatten(args)):
if isinstance(input_var, np.ndarray):
input_var = paddle.static.InputSpec.from_numpy(input_var)
elif isinstance(input_var, core.VarBase):
input_var = paddle.static.InputSpec.from_tensor(input_var)
args_with_spec.append(input_var)
args_with_spec = pack_sequence_as(args, args_with_spec)
return args_with_spec
def test_op(self):
with paddle.static.program_guard(self.main_program,
self.startup_program):
op = self.layer_help.append_op(type=self.op_type,
inputs=self.prim_input,
outputs=self.prim_output,
attrs=self.prim_attrs)
jvp_out = _jvp(op, *self.jvp_args)
jvp_out = flatten(jvp_out)
for k, v in self.jvp_out_shape_map.items():
self.assertEqual(jvp_out[k].shape, v.shape)
# Some prim ops dont have transpose rule
if hasattr(self, 'transpose_args'):
transpose_out = _transpose(op, *self.transpose_args)
transpose_out = flatten(transpose_out)
for k, v in self.transpose_out_shape_map.items():
self.assertEqual(transpose_out[k].shape, v.shape)
all_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(all_ops), sorted(self.all_ops))
def args_to_input_spec(self, args, kwargs):
"""
Converts input arguments into InputSpec.
1. If specific input_spec, use them to construct feed layers.
2. If input_spec is None, consider all Tensor and Numpy.ndarray as feed layers
Args:
args(tuple): tuple of input arguments value of function containing default kwargs value.
kwargs(dict): kwargs arguments received by **kwargs.
Return:
Same nest structure with args by replacing value with InputSpec.
"""
input_with_spec = []
if self._input_spec is not None:
# Note: Because the value type and length of `kwargs` is uncertain.
# So we don't support to deal this case while specificing `input_spec` currently.
if kwargs:
raise ValueError(
"{} got unexpected keyword arguments: {}. Cannot trace the function when `input_spec` is specificed."
.format(self._dygraph_function.__name__, kwargs))
# Note: The length of `input_spec` can be greater than `args`,
# because `args` may contains non-tensor value merged form `kwargs`
# after `unified_args_and_kwargs`.
if len(args) < len(self._input_spec):
raise ValueError(
"Requires len(arguments) >= len(input_spec), but received len(args):{} < len(InputSpec): {}"
.format(len(args), len(self._input_spec)))
# replace argument with corresponding InputSpec.
input_with_spec = convert_to_input_spec(args, self._input_spec)
else:
for idx, input_var in enumerate(flatten(args)):
if isinstance(input_var, np.ndarray):
input_var = paddle.static.InputSpec.from_numpy(input_var)
elif isinstance(input_var, core.VarBase):
input_var = paddle.static.InputSpec.from_tensor(input_var)
input_with_spec.append(input_var)
input_with_spec = pack_sequence_as(args, input_with_spec)
# If without specificing name in input_spec, add default name
# according to argument name from decorated function.
input_with_spec = replace_spec_empty_name(self._arg_names,
input_with_spec)
return input_with_spec
def test_op(self):
with paddle.static.program_guard(self.main_program,
self.startup_program):
op = self.layer_help.append_op(type=self.op_type,
inputs=self.input,
outputs=self.output,
attrs=self.attrs)
orig_out = _prim2orig(op, *self.prim2orig_args)
all_ops = [op.type for op in self.main_program.block(0).ops]
self.assertEqual(sorted(all_ops), sorted(self.all_ops))
orig_out = flatten(orig_out)
for k, v in self.out_map.items():
self.assertEqual(k.shape, orig_out[v].shape)
def _replace_value_with_input_spec(self, args):
args_with_spec = []
for idx, input_var in enumerate(flatten(args)):
if isinstance(input_var, np.ndarray):
input_var = paddle.static.InputSpec.from_numpy(input_var)
_set_spec_stop_gradient(input_var, True)
elif isinstance(input_var, (core.VarBase, core.eager.Tensor)):
stop_gradient = input_var.stop_gradient
input_var = paddle.static.InputSpec.from_tensor(input_var)
_set_spec_stop_gradient(input_var, stop_gradient)
args_with_spec.append(input_var)
args_with_spec = pack_sequence_as(args, args_with_spec)
return args_with_spec
def _get_input_var_names(inputs, input_spec):
name_none_error = "The %s's name is None. " \
"When using jit.save, please set InputSepc's name in " \
"to_static(input_spec=[]) and jit.save(input_spec=[]) " \
"and make sure they are consistent."
name_no_exists_error = "The tensor `%s` does not exists. " \
"Please make sure the name of InputSpec or example Tensor " \
"in input_spec is the same as the name of InputSpec in " \
"`to_static` decorated on the Layer.forward method."
result_list = []
input_var_names = [
var.name for var in flatten(inputs) if isinstance(var, Variable)
]
if input_spec is None:
# no prune
return input_var_names
else:
# fileter out non-tensor type spec infos.
input_spec = [
spec for spec in input_spec
if isinstance(spec, paddle.static.InputSpec)
]
if len(input_spec) == len(input_var_names):
# no prune
result_list = input_var_names
# if input spec name not in input_var_names, only raise warning
for spec in input_spec:
if spec.name is None:
warnings.warn(name_none_error % spec)
elif spec.name not in input_var_names:
warnings.warn(name_no_exists_error % spec.name)
else:
# do nothing
pass
else:
# prune
for spec in input_spec:
if spec.name is None:
# name is None, the input_spec only can be InputSpec
raise ValueError(name_none_error % spec)
elif spec.name not in input_var_names:
# the input_spec can be `InputSpec` or `VarBase`
raise ValueError(name_no_exists_error % spec.name)
else:
result_list.append(spec.name)
return result_list
def sample_data_generator():
batch_data = None
for step, data in enumerate(self.dataset):
data = flatten(data)
if batch_data is None:
batch_data = [[] for i in range(len(data))]
for idx in range(len(data)):
batch_data[idx].append(data[idx])
if (step + 1) % self.batch_size == 0:
partial_data = []
for d in batch_data:
array = np.array(d)
partial_data.append(
np.split(array, self.dp_world_size)[self.dp_rank])
yield partial_data[:len(self.feed_list)]
batch_data = None
def hasher(self, version_field):
from paddle.fluid.layers.utils import flatten
md5 = hashlib.md5()
for field in version_field._fields:
elem = getattr(version_field, field)
if not elem: continue
if isinstance(elem, (list, tuple, dict)):
flat_elem = flatten(elem)
md5 = combine_hash(md5, tuple(flat_elem))
else:
raise RuntimeError(
"Support types with list, tuple and dict, but received {} with {}."
.format(type(elem), elem))
return md5.hexdigest()
def _verify_input_spec(self, input_spec):
"""
Verifies the `input_spec` and its element type is valid.
"""
if not isinstance(input_spec, (tuple, list)):
raise TypeError(
"The type(input_spec) should be one of (tuple, list), but received {}."
.format(type_name(input_spec)))
input_spec = tuple(input_spec)
for spec in flatten(input_spec):
if not isinstance(spec, paddle.static.InputSpec):
raise ValueError(
"The type(elem) from input_spec should be `InputSpec`, but received {}."
.format(type_name(spec)))
return input_spec
def __init__(self, function, input_spec=None):
self._dygraph_function = function
if input_spec is None:
self._input_spec = None
self._flat_input_spec = None
else:
self._input_spec = self._verify_input_spec(input_spec)
self._flat_input_spec = flatten(self._input_spec)
# parse full argument names list.
self._arg_names, self._default_kwargs = parse_arg_and_kwargs(function)
# parse *args
self.varargs_name = parse_varargs_name(function)
if self.varargs_name is not None and isinstance(
function.__self__, TranslatedLayer):
self._arg_names += function.__self__._input_args_names
def _build(self):
for mode in self._modes:
serial_main_prog = self._serial_main_progs.get(mode, None)
if serial_main_prog is not None:
return
losses = []
metrics = []
serial_main_prog = self._orig_main_prog.clone()
serial_startup_prog = self._orig_startup_prog.clone()
with static.program_guard(serial_main_prog, serial_startup_prog):
inputs_spec = self.inputs_spec
labels_spec = self.labels_spec if self.labels_spec else []
inputs = [s._create_feed_layer() for s in inputs_spec]
labels = [s._create_feed_layer() for s in labels_spec]
outputs = to_list(self.model(*inputs))
if mode != "predict" and self._loss:
losses = to_list(self._loss(*(outputs + labels)))
if mode != "predict":
for metric in self._metrics:
metrics.extend(
to_list(metric.compute(*(outputs + labels))))
default_ctx = get_default_distributed_context()
if not default_ctx.has_annotation or self._default_strategy:
inputs = [self._set_data_parallel(var) for var in inputs]
labels = [self._set_data_parallel(var) for var in labels]
# self._feed_vars[mode] = {"inputs": inputs, "labels": labels}
feed_vars = {"inputs": inputs, "labels": labels}
# self._fetch_vars[mode] = {
# "outputs": flatten(outputs),
# "loss": losses,
# "metrics": metrics
# }
fetch_vars = {
"outputs": flatten(outputs),
"loss": losses,
"metrics": metrics
}
self._dist_contexts[mode] = DistributedContext(
serial_main_prog, serial_startup_prog, self._optimizer, losses,
feed_vars, fetch_vars, self.cluster, self.strategy)
self._dist_contexts[mode].gradient_scale = self._gradient_scale
def _prepare(self, inputs):
"""
Prepare inputs, outputs, attrs.
"""
assert isinstance(inputs, (tuple, list))
# Flatten inputs with nested structure into single list.
flatten_inputs = flatten(inputs)
# Convert variable into VarBase and feed in training data.
input_vars = []
for i, value in enumerate(flatten_inputs):
if isinstance(value, np.ndarray):
var = core.VarBase(value=value,
name=self._inputs[i].desc.name(),
persistable=False,
place=framework._current_expected_place(),
zero_copy=True)
elif isinstance(value, core.VarBase):
var = value
var.name = self._inputs[i].desc.name()
else:
continue
input_vars.append(var)
# Create VarBase to receive output data.
out_vars = []
for idx in self._outputs.var_ids:
var = self._outputs[idx]
assert isinstance(var, framework.Variable)
var_desc = var.desc
var_base = core.VarBase(var_desc.dtype(), var_desc.shape(),
var_desc.name(), var_desc.type(), False)
out_vars.append(var_base)
# Hold forward variables
tmp_scope_vec = core.VarBase(core.VarDesc.VarType.FP32, [],
"program_out_scope",
core.VarDesc.VarType.STEP_SCOPES, True)
tmp_scope_vec.value().set_scope(self._inner_scope)
return input_vars, out_vars, tmp_scope_vec
def _get_output_vars(outputs, output_spec):
name_no_exists_error = "The tensor `%s` does not exists. " \
"Please make sure the name of example Tensor " \
"in configs.output_spec is the output tensor of " \
"Layer.forward method."
result_list = []
output_vars_dict = OrderedDict()
for var in flatten(outputs):
if isinstance(var, Variable):
output_vars_dict[var.name] = var
if output_spec is None:
result_list = output_vars_dict.values()
elif output_spec is not None and len(output_spec) == len(output_vars_dict):
result_list = output_vars_dict.values()
for var in output_spec:
if var.name not in output_vars_dict:
warnings.warn(name_no_exists_error % var.name)
else:
for var in output_spec:
if var.name not in output_vars_dict:
raise ValueError(name_no_exists_error % var.name)
else:
result_list.append(output_vars_dict[var.name])
return result_list
def tolist(self):
"""
Flattens the nested sequences into single list.
"""
return flatten(self.__raw_input)
def do_predict(args):
device = paddle.set_device("gpu" if args.use_cuda else "cpu")
fluid.enable_dygraph(device) if args.eager_run else None
inputs = [
Input([None, None], "int64", name="src_word"),
Input([None, None], "int64", name="src_pos"),
Input([None, args.n_head, None, None],
"float32",
name="src_slf_attn_bias"),
Input([None, args.n_head, None, None],
"float32",
name="trg_src_attn_bias"),
]
# define data
dataset = Seq2SeqDataset(fpattern=args.predict_file,
src_vocab_fpath=args.src_vocab_fpath,
trg_vocab_fpath=args.trg_vocab_fpath,
token_delimiter=args.token_delimiter,
start_mark=args.special_token[0],
end_mark=args.special_token[1],
unk_mark=args.special_token[2],
byte_data=True)
args.src_vocab_size, args.trg_vocab_size, args.bos_idx, args.eos_idx, \
args.unk_idx = dataset.get_vocab_summary()
trg_idx2word = Seq2SeqDataset.load_dict(dict_path=args.trg_vocab_fpath,
reverse=True,
byte_data=True)
batch_sampler = Seq2SeqBatchSampler(dataset=dataset,
use_token_batch=False,
batch_size=args.batch_size,
max_length=args.max_length)
data_loader = DataLoader(dataset=dataset,
batch_sampler=batch_sampler,
places=device,
collate_fn=partial(prepare_infer_input,
bos_idx=args.bos_idx,
eos_idx=args.eos_idx,
src_pad_idx=args.eos_idx,
n_head=args.n_head),
num_workers=0,
return_list=True)
# define model
model = paddle.Model(
InferTransformer(args.src_vocab_size,
args.trg_vocab_size,
args.max_length + 1,
args.n_layer,
args.n_head,
args.d_key,
args.d_value,
args.d_model,
args.d_inner_hid,
args.prepostprocess_dropout,
args.attention_dropout,
args.relu_dropout,
args.preprocess_cmd,
args.postprocess_cmd,
args.weight_sharing,
args.bos_idx,
args.eos_idx,
beam_size=args.beam_size,
max_out_len=args.max_out_len), inputs)
model.prepare()
# load the trained model
assert args.init_from_params, (
"Please set init_from_params to load the infer model.")
model.load(args.init_from_params)
# TODO: use model.predict when support variant length
f = open(args.output_file, "wb")
for data in data_loader():
finished_seq = model.test_batch(inputs=flatten(data))[0]
finished_seq = np.transpose(finished_seq, [0, 2, 1])
for ins in finished_seq:
for beam_idx, beam in enumerate(ins):
if beam_idx >= args.n_best: break
id_list = post_process_seq(beam, args.bos_idx, args.eos_idx)
word_list = [trg_idx2word[id] for id in id_list]
sequence = b" ".join(word_list) + b"\n"
f.write(sequence)
def do_predict(args):
device = paddle.set_device("gpu" if args.use_gpu else "cpu")
fluid.enable_dygraph(device) if args.eager_run else None
# define model
inputs = [
Input(
[None, None], "int64", name="src_word"),
Input(
[None], "int64", name="src_length"),
]
# def dataloader
dataset = Seq2SeqDataset(
fpattern=args.infer_file,
src_vocab_fpath=args.vocab_prefix + "." + args.src_lang,
trg_vocab_fpath=args.vocab_prefix + "." + args.tar_lang,
token_delimiter=None,
start_mark="<s>",
end_mark="</s>",
unk_mark="<unk>")
trg_idx2word = Seq2SeqDataset.load_dict(
dict_path=args.vocab_prefix + "." + args.tar_lang, reverse=True)
(args.src_vocab_size, args.trg_vocab_size, bos_id, eos_id,
unk_id) = dataset.get_vocab_summary()
batch_sampler = Seq2SeqBatchSampler(
dataset=dataset, use_token_batch=False, batch_size=args.batch_size)
data_loader = DataLoader(
dataset=dataset,
batch_sampler=batch_sampler,
places=device,
collate_fn=partial(
prepare_infer_input, bos_id=bos_id, eos_id=eos_id, pad_id=eos_id),
num_workers=0,
return_list=True)
model_maker = AttentionInferModel if args.attention else BaseInferModel
model = paddle.Model(
model_maker(
args.src_vocab_size,
args.tar_vocab_size,
args.hidden_size,
args.hidden_size,
args.num_layers,
args.dropout,
bos_id=bos_id,
eos_id=eos_id,
beam_size=args.beam_size,
max_out_len=256),
inputs=inputs)
model.prepare()
# load the trained model
assert args.reload_model, (
"Please set reload_model to load the infer model.")
model.load(args.reload_model)
# TODO(guosheng): use model.predict when support variant length
with io.open(args.infer_output_file, 'w', encoding='utf-8') as f:
for data in data_loader():
finished_seq = model.test_batch(inputs=flatten(data))[0]
finished_seq = finished_seq[:, :, np.newaxis] if len(
finished_seq.shape) == 2 else finished_seq
finished_seq = np.transpose(finished_seq, [0, 2, 1])
for ins in finished_seq:
for beam_idx, beam in enumerate(ins):
id_list = post_process_seq(beam, bos_id, eos_id)
word_list = [trg_idx2word[id] for id in id_list]
sequence = " ".join(word_list) + "\n"
f.write(sequence)
break
def _run_one_epoch(self,
data_loader,
callbacks,
mode,
metrics_name,
epoch=None):
size = len(data_loader) if hasattr(data_loader, '__len__') else None
logs = {
'steps': size,
'metrics_name': metrics_name,
}
if mode == 'train':
assert epoch is not None, 'when mode is train, epoch must be given'
callbacks.on_epoch_begin(epoch)
for step, data in enumerate(data_loader):
# data might come from different types of data_loader and have
# different format, as following:
# 1. DataLoader in static graph:
# [[input1, input2, ..., label1, lable2, ...]]
# 2. DataLoader in dygraph
# [input1, input2, ..., label1, lable2, ...]
# 3. custumed iterator yield concated inputs and labels:
# [input1, input2, ..., label1, lable2, ...]
# 4. custumed iterator yield seperated inputs and labels:
# ([input1, input2, ...], [label1, lable2, ...])
# To handle all of these, flatten (nested) list to list.
data = flatten(data)
# LoDTensor.shape is callable, where LoDTensor comes from
# DataLoader in static graph
batch_size = data[0].shape()[0] if callable(
data[0].shape) else data[0].shape[0]
callbacks.on_batch_begin(mode, step, logs)
if mode == 'train':
outs = self.train(data[:len(self._inputs)],
data[len(self._inputs):])
else:
outs = self.eval(data[:len(self._inputs)],
data[len(self._inputs):])
# losses
loss = outs[0] if self._metrics else outs
metrics = [[l[0] for l in loss]]
# metrics
for metric in self._metrics:
res = metric.accumulate()
metrics.extend(to_list(res))
assert len(metrics_name) == len(metrics)
for k, v in zip(metrics_name, metrics):
logs[k] = v
logs['step'] = step
if mode == 'train' or self._adapter._merge_count.get(
mode + '_batch', 0) <= 0:
logs['batch_size'] = batch_size * ParallelEnv().nranks
else:
logs['batch_size'] = self._adapter._merge_count[mode +
'_batch']
callbacks.on_batch_end(mode, step, logs)
self._reset_metrics()
if mode == 'train':
assert epoch is not None, 'when mode is train, epoch must be given'
callbacks.on_epoch_end(epoch)
return logs