def test_copy_share_memory(self):
x = tt.fscalar("x")
# SharedVariable for tests, one of them has update
y = aesara.shared(value=1)
z = aesara.shared(value=2)
out = tt.tanh((x + y + 2) / (x + z - 0.2) ** 2)
# Test for different linkers
for mode in ["FAST_RUN", "FAST_COMPILE"]:
ori = aesara.function([x], [out], mode=mode, updates={z: z + 1})
cpy = ori.copy(share_memory=True)
# Test if memories shared
storage_map_ori = ori.fn.storage_map
storage_map_cpy = cpy.fn.storage_map
fgraph_cpy = cpy.maker.fgraph
# Assert intermediate and Constants storages are shared.
# and output stoarges are not shared
i_o_variables = fgraph_cpy.inputs + fgraph_cpy.outputs
ori_storages = storage_map_ori.values()
l = [
val
for key, val in storage_map_cpy.items()
if key not in i_o_variables or isinstance(key, tt.Constant)
]
for storage in l:
assert any([storage is s for s in ori_storages])
# Assert storages of SharedVariable without updates are shared
for (input, _1, _2), here, there in zip(
ori.indices, ori.input_storage, cpy.input_storage
):
assert here.data is there.data
def test_reallocation():
x = tensor.scalar("x")
y = tensor.scalar("y")
z = tensor.tanh(3 * x + y) + tensor.cosh(x + 5 * y)
# The functinality is currently implement for non lazy and non c VM only.
for linker in [
vm.VM_Linker(allow_gc=False, lazy=False, use_cloop=False),
vm.VM_Linker(allow_gc=True, lazy=False, use_cloop=False),
]:
m = aesara.compile.get_mode(aesara.Mode(linker=linker))
m = m.excluding("fusion", "inplace")
f = aesara.function([x, y], z, name="test_reduce_memory", mode=m)
output = f(1, 2)
assert output
storage_map = f.fn.storage_map
def check_storage(storage_map):
from aesara.tensor.var import TensorConstant
for i in storage_map:
if not isinstance(i, TensorConstant):
keys_copy = list(storage_map.keys())[:]
keys_copy.remove(i)
for o in keys_copy:
if storage_map[i][
0] and storage_map[i][0] is storage_map[o][0]:
return [True, storage_map[o][0]]
return [False, None]
assert check_storage(storage_map)[0]
assert len({id(v) for v in storage_map.values()}) < len(storage_map)
def step(x_t, h_tm1, c_tm1):
i_t = tt.nnet.sigmoid(
tt.dot(x_t, self.W_i) + tt.dot(h_tm1, self.R_i) + self.b_wi +
self.b_ri)
f_t = tt.nnet.sigmoid(
tt.dot(x_t, self.W_f) + tt.dot(h_tm1, self.R_f) + self.b_wf +
self.b_rf)
o_t = tt.nnet.sigmoid(
tt.dot(x_t, self.W_o) + tt.dot(h_tm1, self.R_o) + self.b_ro +
self.b_wo)
c_hat_t = tt.tanh(
tt.dot(x_t, self.W_c) + tt.dot(h_tm1, self.R_c) + self.b_wc +
self.b_rc)
c_t = f_t * c_tm1 + i_t * c_hat_t
h_t = o_t * tt.tanh(c_t)
return h_t, c_t
def ElemwiseOpTime(N, script=False, loops=1000):
x = tt.vector("x")
np.random.seed(1235)
v = np.random.random(N).astype(aesara.config.floatX)
f = aesara.function([x], 2 * x + x * x)
f1 = aesara.function([x], tt.tanh(x))
if not script:
if aesara.config.openmp:
print("With openmp:")
print("Fast op ", end=" ")
ceapTime = evalTime(f, v, script=script, loops=loops)
if not script:
print("Slow op ", end=" ")
costlyTime = evalTime(f1, v, script=script, loops=loops)
return (ceapTime, costlyTime)
def step(inp, s_prev):
i_t = tt.nnet.sigmoid(
tt.dot(inp, self.W_i) + tt.dot(s_prev, self.R_i) + self.b_wi +
self.b_ru)
r_t = tt.nnet.sigmoid(
tt.dot(inp, self.W_r) + tt.dot(s_prev, self.R_r) + self.b_wr +
self.b_rr)
h_hat_t = tt.tanh(
tt.dot(inp, self.W_h) +
(r_t * (tt.dot(s_prev, self.R_h) + self.b_rh)) + self.b_wh)
s_curr = ((1.0 - i_t) * h_hat_t) + (i_t * s_prev)
return s_curr
def rnn_step1(
# sequences
x,
ri,
zi,
# outputs_info
h,
):
pre_r = ri + h.dot(U)
pre_z = zi + h.dot(V)
r = tt.nnet.sigmoid(pre_r)
z = tt.nnet.sigmoid(pre_z)
after_r = r * h
pre_h = x + after_r.dot(W)
new_h = tt.tanh(pre_h)
res_h = z * new_h + (1 - z) * h
return res_h
def test_composite_elemwise_float16(self):
w = aesara.tensor.bvector()
x = aesara.tensor.vector(dtype="float16")
y = aesara.tensor.fvector()
cz = tensor.tanh(x + tensor.cast(y, "float16"))
o = (cz - cz**2 + tensor.cast(x, "int16") + tensor.cast(x, "float32") +
tensor.cast(w, "float16") - tensor.constant(np.float16(1.0)))
aesara.function([w, x, y], o, mode=mode_with_gpu)
v = aesara.tensor.vector(dtype="uint8")
w = aesara.tensor.vector(dtype="float16")
x = aesara.tensor.vector(dtype="float16")
y = aesara.tensor.vector(dtype="float16")
z = aesara.tensor.vector(dtype="float16")
o = tensor.switch(v, tensor.mul(w, x, y), z)
aesara.function([v, w, x, y, z], o, mode=mode_with_gpu)
def test_no_output_from_implace():
x = tt.matrix()
y = tt.matrix()
a = tt.dot(x, y)
b = tt.tanh(a)
# Ensure that the elemwise op that produces the output is inplace when
# using a mode that does not include the optimization
fct_no_opt = aesara.function([x, y], b, mode="FAST_RUN")
op = fct_no_opt.maker.fgraph.outputs[0].owner.op
assert hasattr(op, "destroy_map") and 0 in op.destroy_map
# Ensure that the elemwise op that produces the output is not inplace when
# using a mode that includes the optimization
opt = AddFeatureOptimizer(NoOutputFromInplace())
mode_opt = Mode(linker="cvm", optimizer="fast_run").register((opt, 49.9))
fct_opt = aesara.function([x, y], b, mode=mode_opt)
op = fct_opt.maker.fgraph.outputs[0].owner.op
assert not hasattr(op, "destroy_map") or 0 not in op.destroy_map
def deriv(*args):
(x, ) = args
return 1.0 - aet.tanh(x)**2
def step(x_t, h_tm1):
h = tt.tanh(tt.dot(h_tm1, W_hh) + tt.dot(x_t, W_xh) + b_h)
return h
def tanh_func(x, x1, x2, w, x0):
return (x1 + x2) / 2.0 - (x1 - x2) / 2.0 * at.tanh((x - x0) / w)
def warp_func(x, a, b, c):
return x + (a * at.tanh(b * (x - c)))
def dm_taper(sx):
"""
tapering function for isopycnal slopes
"""
return 0.5 * (1.0 + aet.tanh((-abs(sx) + iso_slopec) / iso_dslope))
