def testConst(self):
np.random.seed(7)
with self.test_session(use_gpu=True):
for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape).astype(np.float32)
# Pack back into a single tensorflow tensor directly using np array
c = array_ops.stack(data)
# This is implemented via a Const:
self.assertEqual(c.op.type, "Const")
self.assertAllEqual(c.eval(), data)
c = array_ops.parallel_stack(data)
self.assertAllEqual(c.eval(), data)
# Python lists also work for 1-D case:
if len(shape) == 1:
data_list = list(data)
cl = array_ops.stack(data_list)
self.assertEqual(cl.op.type, "Const")
self.assertAllEqual(cl.eval(), data)
cl = array_ops.parallel_stack(data_list)
self.assertAllEqual(cl.eval(), data)
# Verify that shape induction works with shapes produced via const stack
a = constant_op.constant([1, 2, 3, 4, 5, 6])
b = array_ops.reshape(a, array_ops.stack([2, 3]))
self.assertAllEqual(b.get_shape(), [2, 3])
def testConst(self):
np.random.seed(7)
with self.test_session(use_gpu=True):
for shape in (2, ), (3, ), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape).astype(np.float32)
# Pack back into a single tensorflow tensor directly using np array
c = array_ops.pack(data)
# This is implemented via a Const:
self.assertEqual(c.op.type, "Const")
self.assertAllEqual(c.eval(), data)
c = array_ops.parallel_stack(data)
self.assertAllEqual(c.eval(), data)
# Python lists also work for 1-D case:
if len(shape) == 1:
data_list = list(data)
cl = array_ops.pack(data_list)
self.assertEqual(cl.op.type, "Const")
self.assertAllEqual(cl.eval(), data)
cl = array_ops.stack(data_list)
self.assertEqual(cl.op.type, "Const")
self.assertAllEqual(cl.eval(), data)
cl = array_ops.parallel_stack(data_list)
self.assertAllEqual(cl.eval(), data)
# Verify that shape induction works with shapes produced via const pack
a = constant_op.constant([1, 2, 3, 4, 5, 6])
b = array_ops.reshape(a, array_ops.pack([2, 3]))
self.assertAllEqual(b.get_shape(), [2, 3])
b = array_ops.reshape(a, array_ops.stack([2, 3]))
self.assertAllEqual(b.get_shape(), [2, 3])
def testConstParallelGPU(self):
np.random.seed(7)
with self.session(use_gpu=True):
for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape).astype(np.float32)
if len(shape) == 1:
data_list = list(data)
cl = array_ops.parallel_stack(data_list)
self.assertAllEqual(cl.eval(), data)
data = np.random.randn(*shape).astype(np.float32)
c = array_ops.parallel_stack(data)
self.assertAllEqual(c.eval(), data)
def testConstParallelCPU(self):
np.random.seed(7)
with self.session(use_gpu=False):
for shape in (2, ), (3, ), (2, 3), (3, 2), (4, 3, 2), (8, 2, 10):
with self.subTest(shape=shape):
data = self.randn(shape, np.float32)
if len(shape) == 1:
data_list = list(data)
cl = array_ops.parallel_stack(data_list)
self.assertAllEqual(cl, data)
data = self.randn(shape, np.float32)
c = array_ops.parallel_stack(data)
self.assertAllEqual(c, data)
def testConstParallelGPU(self):
# tf.parallel_stack is only supported in graph mode.
with ops.Graph().as_default():
np.random.seed(7)
with test_util.device(use_gpu=True):
for shape in (2, ), (3, ), (2, 3), (3, 2), (4, 3, 2):
with self.subTest(shape=shape):
data = self.randn(shape, np.float32)
if len(shape) == 1:
data_list = list(data)
cl = array_ops.parallel_stack(data_list)
self.assertAllEqual(cl, data)
data = self.randn(shape, np.float32)
c = array_ops.parallel_stack(data)
self.assertAllEqual(c, data)
def testSimpleParallelGPU(self):
np.random.seed(7)
with self.session(use_gpu=True):
for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape).astype(np.float32)
xs = list(map(constant_op.constant, data))
c = array_ops.parallel_stack(xs)
self.assertAllEqual(c.eval(), data)
def testAxis0Default(self):
with self.test_session(use_gpu=True):
t = [constant_op.constant([1, 2, 3]), constant_op.constant([4, 5, 6])]
stacked = array_ops.stack(t).eval()
parallel_stacked = array_ops.parallel_stack(t).eval()
self.assertAllEqual(stacked, np.array([[1, 2, 3], [4, 5, 6]]))
self.assertAllEqual(parallel_stacked, np.array([[1, 2, 3], [4, 5, 6]]))
def testAxis0DefaultGPU(self):
with self.session(use_gpu=True):
t = [constant_op.constant([1, 2, 3]), constant_op.constant([4, 5, 6])]
stacked = array_ops.stack(t).eval()
parallel_stacked = array_ops.parallel_stack(t).eval()
expected = np.array([[1, 2, 3], [4, 5, 6]])
self.assertAllEqual(stacked, expected)
self.assertAllEqual(parallel_stacked, expected)
def testAxis0DefaultCPU(self):
with self.session(use_gpu=False):
t = [constant_op.constant([1, 2, 3]), constant_op.constant([4, 5, 6])]
stacked = array_ops.stack(t).eval()
parallel_stacked = array_ops.parallel_stack(t).eval()
expected = np.array([[1, 2, 3], [4, 5, 6]])
self.assertAllEqual(stacked, expected)
self.assertAllEqual(parallel_stacked, expected)
def testZeroSizeGPU(self):
# Verify that stack doesn't crash for zero size inputs
with self.session(use_gpu=True):
for shape in (0,), (3, 0), (0, 3):
x = np.zeros((2,) + shape).astype(np.int32)
p = array_ops.stack(list(x)).eval()
self.assertAllEqual(p, x)
p = array_ops.parallel_stack(list(x)).eval()
self.assertAllEqual(p, x)
def testSimpleParallelGPU(self):
np.random.seed(7)
with self.session(use_gpu=True):
for shape in (2, ), (3, ), (2, 3), (3, 2), (4, 3, 2), (100, 24, 24,
3):
with self.subTest(shape=shape):
data = self.randn(shape, np.float32)
xs = list(map(constant_op.constant, data))
c = array_ops.parallel_stack(xs)
self.assertAllEqual(c, data)
def testSimpleParallelGPU(self):
# tf.parallel_stack is only supported in graph mode.
with ops.Graph().as_default():
with test_util.device(use_gpu=True):
for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2), (100, 24, 24, 3):
with self.subTest(shape=shape):
data = self.randn(shape, np.float32)
xs = list(map(constant_op.constant, data))
c = array_ops.parallel_stack(xs)
self.assertAllEqual(c, data)
def testAxis0DefaultGPU(self):
# tf.parallel_stack is only supported in graph mode.
with ops.Graph().as_default():
with test_util.device(use_gpu=True):
t = [constant_op.constant([1, 2, 3]), constant_op.constant([4, 5, 6])]
stacked = self.evaluate(array_ops.stack(t))
parallel_stacked = self.evaluate(array_ops.parallel_stack(t))
expected = np.array([[1, 2, 3], [4, 5, 6]])
self.assertAllEqual(stacked, expected)
self.assertAllEqual(parallel_stacked, expected)
def testZeroSizeGPU(self):
# tf.parallel_stack is only supported in graph mode.
with ops.Graph().as_default():
# Verify that stack doesn't crash for zero size inputs
with test_util.device(use_gpu=True):
for shape in (0, ), (3, 0), (0, 3):
with self.subTest(shape=shape):
x = np.zeros((2, ) + shape).astype(np.int32)
p = self.evaluate(array_ops.stack(list(x)))
self.assertAllEqual(p, x)
p = self.evaluate(array_ops.parallel_stack(list(x)))
self.assertAllEqual(p, x)
def testSimple(self):
np.random.seed(7)
with self.test_session(use_gpu=True):
for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape)
# Convert [data[0], data[1], ...] separately to tensorflow
# TODO(irving): Remove list() once we handle maps correctly
xs = list(map(constant_op.constant, data))
# Pack back into a single tensorflow tensor
c = array_ops.stack(xs)
self.assertAllEqual(c.eval(), data)
c = array_ops.parallel_stack(xs)
self.assertAllEqual(c.eval(), data)
def testAxis0Default(self):
with self.test_session(use_gpu=True):
t = [
constant_op.constant([1, 2, 3]),
constant_op.constant([4, 5, 6])
]
packed = array_ops.pack(t).eval()
stacked = array_ops.stack(t).eval()
parallel_stacked = array_ops.parallel_stack(t).eval()
self.assertAllEqual(packed, np.array([[1, 2, 3], [4, 5, 6]]))
self.assertAllEqual(stacked, np.array([[1, 2, 3], [4, 5, 6]]))
self.assertAllEqual(parallel_stacked, np.array([[1, 2, 3], [4, 5, 6]]))
def testSimple(self):
np.random.seed(7)
with self.test_session(use_gpu=True):
for shape in (2, ), (3, ), (2, 3), (3, 2), (4, 3, 2):
data = np.random.randn(*shape)
# Convert [data[0], data[1], ...] separately to tensorflow
# TODO(irving): Remove list() once we handle maps correctly
xs = list(map(constant_op.constant, data))
# Pack back into a single tensorflow tensor
c = array_ops.stack(xs)
self.assertAllEqual(c.eval(), data)
c = array_ops.parallel_stack(xs)
self.assertAllEqual(c.eval(), data)