def main(self, tensor, expect_array, expect_lod, expect_max_len, level=0):
place = self.place()
program = Program()
with program_guard(program):
x = layers.data(name='x', shape=[10])
x.persistable = True
table = layers.lod_rank_table(x, level=level)
max_len = layers.max_sequence_len(table)
max_len.persistable = True
array = layers.lod_tensor_to_array(x, table)
array.persistable = True
result = layers.array_to_lod_tensor(array, table)
result.persistable = True
exe = Executor(place)
scope = core.Scope()
exe.run(program, feed={'x': tensor}, scope=scope)
var = scope.find_var(array.name)
array = var.get_lod_tensor_array()
if expect_array is not None and expect_lod is not None:
self.check_array_same(array, expect_array, expect_lod)
self.check_tensor_same(
scope.find_var(result.name).get_tensor(), tensor)
self.assertEqual(
numpy.array(scope.find_var(max_len.name).get_tensor())[0],
expect_max_len)
def test_grad(self):
place = core.CPUPlace()
program = Program()
with program_guard(program):
x = layers.data(name='x',
shape=[1],
dtype='float32',
stop_gradient=False)
table = layers.lod_rank_table(x, level=0)
array = layers.lod_tensor_to_array(x, table)
result = layers.array_to_lod_tensor(array, table)
mean = layers.mean(result)
append_backward(mean)
tensor = core.LoDTensor()
tensor.set(numpy.arange(10).reshape(10, 1).astype('float32'), place)
tensor.set_recursive_sequence_lengths([[3, 6, 1]])
g_vars = program.global_block().var(x.name + "@GRAD")
exe = Executor(place)
g_out = [
numpy.array(item).sum() for item in exe.run(program,
feed={'x': tensor},
fetch_list=[g_vars],
return_numpy=False)
]
g_out_sum = numpy.array(g_out).sum()
self.assertAlmostEqual(1.0, g_out_sum, delta=0.1)
def test_grad(self):
place = core.CPUPlace()
program = Program()
with program_guard(program):
x = layers.data(
name='x', shape=[1], dtype='float32', stop_gradient=False)
table = layers.lod_rank_table(x, level=0)
array = layers.lod_tensor_to_array(x, table)
result = layers.array_to_lod_tensor(array, table)
mean = layers.mean(result)
append_backward(mean)
tensor = core.LoDTensor()
tensor.set(numpy.arange(10).reshape(10, 1).astype('float32'), place)
tensor.set_lod([[0, 3, 9, 10]])
g_vars = program.global_block().var(x.name + "@GRAD")
exe = Executor(place)
g_out = [
numpy.array(item).sum()
for item in exe.run(program,
feed={'x': tensor},
fetch_list=[g_vars],
return_numpy=False)
]
g_out_sum = numpy.array(g_out).sum()
self.assertAlmostEqual(1.0, g_out_sum, delta=0.1)
def main(self, tensor, expect_array, expect_lod, expect_max_len, level=0):
place = self.place()
program = Program()
with program_guard(program):
x = layers.data(name='x', shape=[10])
x.persistable = True
table = layers.lod_rank_table(x, level=level)
max_len = layers.max_sequence_len(table)
max_len.persistable = True
array = layers.lod_tensor_to_array(x, table)
array.persistable = True
result = layers.array_to_lod_tensor(array, table)
result.persistable = True
exe = Executor(place)
scope = core.Scope()
exe.run(program, feed={'x': tensor}, scope=scope)
var = scope.find_var(array.name)
array = var.get_lod_tensor_array()
if expect_array is not None and expect_lod is not None:
self.check_array_same(array, expect_array, expect_lod)
self.check_tensor_same(scope.find_var(result.name).get_tensor(), tensor)
self.assertEqual(
numpy.array(scope.find_var(max_len.name).get_tensor())[0],
expect_max_len)
def test_lod_rank_table(self):
x = data(name='x', shape=[100])
cpu = core.CPUPlace()
rank_table = lod_rank_table(x=x, level=1)
rank_table.persistable = True
exe = Executor(cpu)
scope = core.Scope()
tensor = core.LoDTensor()
tensor.set(numpy.random.random(size=(17, 100)), cpu)
tensor.set_lod([[0, 1, 3], [0, 5, 6, 7], [0, 3, 4, 9, 10, 13, 16, 17]])
exe.run(scope=scope, feed={'x': tensor})
var = scope.find_var(rank_table.name)
table = var.get_lod_rank_table()
self.assertEqual([(0, 5), (1, 1), (2, 1)], table.items())
def setUp(self):
self.main_program = Program()
switch_main_program(self.main_program)
x = layers.data('x', shape=[100], dtype='float32')
x.stop_gradient = False
rank_table_tensor = layers.data(
'rank_table_tensor', shape=[1], dtype='float32', lod_level=1)
table = layers.lod_rank_table(x=rank_table_tensor)
i = layers.zeros(dtype='int64', shape=[1])
self.mem1 = layers.shrink_memory(x=x, i=i, table=table)
i = layers.increment(x=i)
i.stop_gradient = True
self.mem2 = layers.shrink_memory(x=self.mem1, i=i, table=table)
i = layers.increment(x=i)
i.stop_gradient = True
self.mem3 = layers.shrink_memory(x=self.mem2, i=i, table=table)
mem3_mean = layers.mean(self.mem3)
append_backward(loss=mem3_mean)
self.x_grad = self.main_program.global_block().var('x@GRAD')
def setUp(self):
self.main_program = Program()
switch_main_program(self.main_program)
x = layers.data('x', shape=[100], dtype='float32')
x.stop_gradient = False
rank_table_tensor = layers.data(
'rank_table_tensor', shape=[1], dtype='float32', lod_level=1)
table = layers.lod_rank_table(x=rank_table_tensor)
i = layers.zeros(dtype='int64', shape=[1])
self.mem1 = layers.shrink_memory(x=x, i=i, table=table)
i = layers.increment(x=i)
i.stop_gradient = True
self.mem2 = layers.shrink_memory(x=self.mem1, i=i, table=table)
i = layers.increment(x=i)
i.stop_gradient = True
self.mem3 = layers.shrink_memory(x=self.mem2, i=i, table=table)
mem3_mean = layers.mean(self.mem3)
append_backward(loss=mem3_mean)
self.x_grad = self.main_program.global_block().var('x@GRAD')