def testSparseRepeatedIndices(self):
for dtype in [dtypes.half, dtypes.float32, dtypes.float64]:
with self.cached_session():
repeated_index_update_var = variables.Variable([[1.0], [2.0]],
dtype=dtype)
aggregated_update_var = variables.Variable([[1.0], [2.0]],
dtype=dtype)
grad_repeated_index = ops.IndexedSlices(
constant_op.constant([0.1, 0.1], shape=[2, 1],
dtype=dtype),
constant_op.constant([1, 1]), constant_op.constant([2, 1]))
grad_aggregated = ops.IndexedSlices(
constant_op.constant([0.2], shape=[1, 1], dtype=dtype),
constant_op.constant([1]), constant_op.constant([2, 1]))
repeated_update = adamlrm.AdamLRM().apply_gradients([
(grad_repeated_index, repeated_index_update_var)
])
aggregated_update = adamlrm.AdamLRM().apply_gradients([
(grad_aggregated, aggregated_update_var)
])
variables.global_variables_initializer().run()
self.assertAllClose(aggregated_update_var.eval(),
self.evaluate(repeated_index_update_var))
for _ in range(3):
repeated_update.run()
aggregated_update.run()
self.assertAllClose(
aggregated_update_var.eval(),
self.evaluate(repeated_index_update_var))
def testSparseWithAmsgrad(self):
# dtypes.half does not work on gpu + eager.
for dtype in [dtypes.float32, dtypes.float64]:
with self.cached_session():
m0 = np.array([[0.0], [0.0]])
v0 = np.array([[0.0], [0.0]])
v0hat = np.array([[0.0], [0.0]])
indices_np = np.array([1])
indices = constant_op.constant(indices_np, dtype=dtypes.int32)
var0_np = np.array([[1.0], [2.0]], dtype=dtype.as_numpy_dtype)
repeated_index_update_var = variables.Variable(var0_np,
dtype=dtype)
aggregated_update_var = variables.Variable(var0_np,
dtype=dtype)
grads0_np = np.array([[0.2]], dtype=dtype.as_numpy_dtype)
grad_repeated_index = ops.IndexedSlices(
constant_op.constant([0.1, 0.1], shape=[2, 1],
dtype=dtype),
constant_op.constant([1, 1]), constant_op.constant([2, 1]))
grad_aggregated = ops.IndexedSlices(
grads0_np, indices, constant_op.constant([2, 1]))
opt_repeated = adamlrm.AdamLRM(amsgrad=True)
opt_aggregated = adamlrm.AdamLRM(amsgrad=True)
if not context.executing_eagerly():
repeated_update = opt_repeated.apply_gradients([
(grad_repeated_index, repeated_index_update_var)
])
aggregated_update = opt_aggregated.apply_gradients([
(grad_aggregated, aggregated_update_var)
])
self.evaluate(variables.global_variables_initializer())
self.assertAllClose(self.evaluate(aggregated_update_var),
self.evaluate(repeated_index_update_var))
for t in range(3):
if not context.executing_eagerly():
self.evaluate(repeated_update)
self.evaluate(aggregated_update)
else:
opt_repeated.apply_gradients([
(grad_repeated_index, repeated_index_update_var)
])
opt_aggregated.apply_gradients([
(grad_aggregated, aggregated_update_var)
])
var0_np, m0, v0, v0hat = adam_sparse_update_numpy_amsgrad(
var0_np, indices_np, grads0_np, t, m0, v0, v0hat)
# Validate updated params
self.assertAllCloseAccordingToType(
var0_np, self.evaluate(aggregated_update_var))
self.assertAllCloseAccordingToType(
self.evaluate(aggregated_update_var),
self.evaluate(repeated_index_update_var))
def testConstructAdamLRMWithLR(self):
opt = adamlrm.AdamLRM(lr=1.0)
opt_2 = adamlrm.AdamLRM(learning_rate=0.1, lr=1.0)
opt_3 = adamlrm.AdamLRM(learning_rate=0.1)
self.assertIsInstance(opt.lr, variables.Variable)
self.assertIsInstance(opt_2.lr, variables.Variable)
self.assertIsInstance(opt_3.lr, variables.Variable)
self.evaluate(variables.global_variables_initializer())
self.assertAllClose(self.evaluate(opt.lr), (1.0))
self.assertAllClose(self.evaluate(opt_2.lr), (1.0))
self.assertAllClose(self.evaluate(opt_3.lr), (0.1))
def testBasicWithLearningRateDecay(self):
for i, dtype in enumerate(
[dtypes.half, dtypes.float32, dtypes.float64]):
with self.cached_session(use_gpu=True):
# Initialize variables for numpy implementation.
m0, v0, m1, v1 = 0.0, 0.0, 0.0, 0.0
var0_np = np.array([1.0, 2.0], dtype=dtype.as_numpy_dtype)
grads0_np = np.array([0.1, 0.1], dtype=dtype.as_numpy_dtype)
var1_np = np.array([3.0, 4.0], dtype=dtype.as_numpy_dtype)
grads1_np = np.array([0.01, 0.01], dtype=dtype.as_numpy_dtype)
var0 = resource_variable_ops.ResourceVariable(var0_np,
name="var0_%d" %
i)
var1 = resource_variable_ops.ResourceVariable(var1_np,
name="var1_%d" %
i)
grads0 = constant_op.constant(grads0_np)
grads1 = constant_op.constant(grads1_np)
learning_rate = 0.001
beta_1 = 0.9
beta_2 = 0.999
epsilon = 1e-7
decay = 0.5
opt = adamlrm.AdamLRM(learning_rate=learning_rate,
beta_1=beta_1,
beta_2=beta_2,
epsilon=epsilon,
decay=decay,
lr_multiplier={'var1': 1e-2})
update = opt.apply_gradients(
zip([grads0, grads1], [var0, var1]))
self.evaluate(variables.global_variables_initializer())
# Run 3 steps of Adam
for t in range(3):
self.evaluate(update)
lr_np = learning_rate / (1 + decay * t)
var0_np, m0, v0 = adam_update_numpy(var0_np,
grads0_np,
t,
m0,
v0,
lr=lr_np)
var1_np, m1, v1 = adam_update_numpy(var1_np,
grads1_np,
t,
m1,
v1,
lr=1e-2 * lr_np)
# Validate updated params
self.assertAllCloseAccordingToType(var0_np,
self.evaluate(var0))
self.assertAllCloseAccordingToType(var1_np,
self.evaluate(var1))
def testSparse(self):
for dtype in [dtypes.half, dtypes.float32, dtypes.float64]:
with self.cached_session(use_gpu=True):
# Initialize variables for numpy implementation.
m0, v0, m1, v1 = 0.0, 0.0, 0.0, 0.0
var0_np = np.array([1.0, 1.0, 2.0], dtype=dtype.as_numpy_dtype)
grads0_np = np.array([0.1, 0.0, 0.1],
dtype=dtype.as_numpy_dtype)
var1_np = np.array([3.0, 3.0, 4.0], dtype=dtype.as_numpy_dtype)
grads1_np = np.array([0.01, 0.0, 0.01],
dtype=dtype.as_numpy_dtype)
var0 = resource_variable_ops.ResourceVariable(var0_np,
name='var0')
var1 = resource_variable_ops.ResourceVariable(var1_np,
name='var1')
grads0_np_indices = np.array([0, 2], dtype=np.int32)
grads0 = ops.IndexedSlices(
constant_op.constant(grads0_np[grads0_np_indices]),
constant_op.constant(grads0_np_indices),
constant_op.constant([3]))
grads1_np_indices = np.array([0, 2], dtype=np.int32)
grads1 = ops.IndexedSlices(
constant_op.constant(grads1_np[grads1_np_indices]),
constant_op.constant(grads1_np_indices),
constant_op.constant([3]))
opt = adamlrm.AdamLRM(lr_multiplier={'var1': 1e-2})
update = opt.apply_gradients(
zip([grads0, grads1], [var0, var1]))
variables.global_variables_initializer().run()
# Fetch params to validate initial values
self.assertAllClose([1.0, 1.0, 2.0], self.evaluate(var0))
self.assertAllClose([3.0, 3.0, 4.0], self.evaluate(var1))
beta_1_power, beta_2_power = get_beta_accumulators(opt, dtype)
# Run 3 steps of Adam
for t in range(3):
self.assertAllCloseAccordingToType(
0.9**(t + 1), self.evaluate(beta_1_power))
self.assertAllCloseAccordingToType(
0.999**(t + 1), self.evaluate(beta_2_power))
update.run()
var0_np, m0, v0 = adam_update_numpy(
var0_np, grads0_np, t, m0, v0)
var1_np, m1, v1 = adam_update_numpy(var1_np,
grads1_np,
t,
m1,
v1,
lr=1e-2 * 0.001)
# Validate updated params
self.assertAllCloseAccordingToType(var0_np,
self.evaluate(var0))
self.assertAllCloseAccordingToType(var1_np,
self.evaluate(var1))
def testSetWeightsFromV1AdamLRMWithoutMinimize(self):
keras_v1_adam = optimizers.Adam()
keras_v2_adam = adamlrm.AdamLRM()
keras_v2_adam.set_weights(keras_v1_adam.get_weights())
keras_v1_iteration = keras_v1_adam.iterations
keras_v2_iteration = keras_v2_adam.iterations
self.evaluate(variables.global_variables_initializer())
self.assertEqual(self.evaluate(keras_v1_iteration),
self.evaluate(keras_v2_iteration))
def testSlotsUniqueEager(self):
with context.eager_mode():
v1 = resource_variable_ops.ResourceVariable(1.)
v2 = resource_variable_ops.ResourceVariable(1.)
opt = adamlrm.AdamLRM(1.)
opt.minimize(lambda: v1 + v2, var_list=[v1, v2])
# There should be iteration, and two unique slot variables for v1 and v2.
self.assertEqual(
5, len(set([v.experimental_ref() for v in opt.variables()])))
self.assertEqual(self.evaluate(opt.variables()[0]),
self.evaluate(opt.iterations))
def testSharing(self):
for dtype in [dtypes.half, dtypes.float32, dtypes.float64]:
with self.cached_session(use_gpu=True):
# Initialize variables for numpy implementation.
m0, v0, m1, v1 = 0.0, 0.0, 0.0, 0.0
var0_np = np.array([1.0, 2.0], dtype=dtype.as_numpy_dtype)
grads0_np = np.array([0.1, 0.1], dtype=dtype.as_numpy_dtype)
var1_np = np.array([3.0, 4.0], dtype=dtype.as_numpy_dtype)
grads1_np = np.array([0.01, 0.01], dtype=dtype.as_numpy_dtype)
var0 = variables.Variable(var0_np, name='var0')
var1 = variables.Variable(var1_np, name='var1')
grads0 = constant_op.constant(grads0_np)
grads1 = constant_op.constant(grads1_np)
opt = adamlrm.AdamLRM(lr_multiplier={'var1': 1e-2})
update1 = opt.apply_gradients(
zip([grads0, grads1], [var0, var1]))
update2 = opt.apply_gradients(
zip([grads0, grads1], [var0, var1]))
variables.global_variables_initializer().run()
beta_1_power, beta_2_power = get_beta_accumulators(opt, dtype)
# Fetch params to validate initial values
self.assertAllClose([1.0, 2.0], self.evaluate(var0))
self.assertAllClose([3.0, 4.0], self.evaluate(var1))
# Run 3 steps of intertwined Adam1 and Adam2.
for t in range(3):
self.assertAllCloseAccordingToType(
0.9**(t + 1), self.evaluate(beta_1_power))
self.assertAllCloseAccordingToType(
0.999**(t + 1), self.evaluate(beta_2_power))
if t % 2 == 0:
update1.run()
else:
update2.run()
var0_np, m0, v0 = adam_update_numpy(
var0_np, grads0_np, t, m0, v0)
var1_np, m1, v1 = adam_update_numpy(var1_np,
grads1_np,
t,
m1,
v1,
lr=1e-2 * 0.001)
# Validate updated params
self.assertAllCloseAccordingToType(var0_np,
self.evaluate(var0))
self.assertAllCloseAccordingToType(var1_np,
self.evaluate(var1))
def testSparseDevicePlacement(self):
for index_dtype in [dtypes.int32, dtypes.int64]:
with self.cached_session(force_gpu=test.is_gpu_available()):
# If a GPU is available, tests that all optimizer ops can be placed on
# it (i.e. they have GPU kernels).
var = variables.Variable([[1.0], [2.0]])
indices = constant_op.constant([0, 1], dtype=index_dtype)
g_sum = lambda: math_ops.reduce_sum(
array_ops.gather(var, indices)) # pylint: disable=cell-var-from-loop
optimizer = adamlrm.AdamLRM(3.0)
minimize_op = optimizer.minimize(g_sum, var_list=[var])
variables.global_variables_initializer().run()
minimize_op.run()
def testBasicWithAmsgrad(self):
for i, dtype in enumerate(
[dtypes.half, dtypes.float32, dtypes.float64]):
with self.cached_session(use_gpu=True):
# Initialize variables for numpy implementation.
m0, v0, v0hat, m1, v1, v1hat = 0.0, 0.0, 0.0, 0.0, 0.0, 0.0
var0_np = np.array([1.0, 2.0], dtype=dtype.as_numpy_dtype)
grads0_np = np.array([0.1, 0.1], dtype=dtype.as_numpy_dtype)
var1_np = np.array([3.0, 4.0], dtype=dtype.as_numpy_dtype)
grads1_np = np.array([0.01, 0.01], dtype=dtype.as_numpy_dtype)
var0 = resource_variable_ops.ResourceVariable(var0_np,
name="var0_%d" %
i)
var1 = resource_variable_ops.ResourceVariable(var1_np,
name="var1_%d" %
i)
grads0 = constant_op.constant(grads0_np)
grads1 = constant_op.constant(grads1_np)
opt = adamlrm.AdamLRM(amsgrad=True,
lr_multiplier={'var1': 1e-2})
if not context.executing_eagerly():
update = opt.apply_gradients(
zip([grads0, grads1], [var0, var1]))
self.evaluate(variables.global_variables_initializer())
# Run 3 steps of Adam
for t in range(3):
beta_1_power, beta_2_power = get_beta_accumulators(
opt, dtype)
self.assertAllCloseAccordingToType(
0.9**(t + 1), self.evaluate(beta_1_power))
self.assertAllCloseAccordingToType(
0.999**(t + 1), self.evaluate(beta_2_power))
if not context.executing_eagerly():
self.evaluate(update)
else:
opt.apply_gradients(zip([grads0, grads1],
[var0, var1]))
var0_np, m0, v0, v0hat = adam_update_numpy_amsgrad(
var0_np, grads0_np, t, m0, v0, v0hat)
var1_np, m1, v1, v1hat = adam_update_numpy_amsgrad(
var1_np, grads1_np, t, m1, v1, v1hat, lr=1e-2 * 0.001)
# Validate updated params
self.assertAllCloseAccordingToType(var0_np,
self.evaluate(var0))
self.assertAllCloseAccordingToType(var1_np,
self.evaluate(var1))