def test_multiple(self):
# it should replace all occurrences of the pattern
x, y, z = inputs()
e = op1(op2(x, y), op2(x, y), op2(y, z))
g = FunctionGraph([x, y, z], [e])
PatternOptimizer((op2, "1", "2"), (op4, "1")).optimize(g)
assert str(g) == "FunctionGraph(Op1(Op4(x), Op4(x), Op4(y)))"
def test_import_var(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
var0 = MyVariable("var0")
with pytest.raises(MissingInputError):
# We can't import a new `FunctionGraph` input (i.e. something
# without an owner), at least not without setting `import_missing`
fg.import_var(var0, "testing")
fg.import_var(var0, import_missing=True)
assert var0 in fg.inputs
var5 = op2()
# We can import variables with owners
fg.import_var(var5, "testing")
assert var5 in fg.variables
assert var5.owner in fg.apply_nodes
with pytest.raises(TypeError, match="Computation graph contains.*"):
from aesara.graph.null_type import NullType
fg.import_var(NullType()(), "testing")
def test_merge_outputs(self):
x, y, z = inputs()
e1 = op3(op2(x, y))
e2 = op3(op2(x, y))
g = FunctionGraph([x, y, z], [e1, e2], clone=False)
MergeOptimizer().optimize(g)
assert g.outputs[0] is g.outputs[1]
def test_import_node(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
var8 = MyVariable("var8")
var6 = op2(var8)
with pytest.raises(MissingInputError):
fg.import_node(var6.owner)
assert var8 not in fg.variables
fg.import_node(var6.owner, import_missing=True)
assert var8 in fg.inputs
assert var6.owner in fg.apply_nodes
var7 = op2(var2)
assert not hasattr(var7.owner.tag, "imported_by")
fg.import_node(var7.owner)
assert hasattr(var7.owner.tag, "imported_by")
assert var7 in fg.variables
assert var7.owner in fg.apply_nodes
assert (var7.owner, 0) in fg.get_clients(var2)
def test_merge_outputs(self):
x, y, z = inputs()
e1 = op3(op2(x, y))
e2 = op3(op2(x, y))
g = FunctionGraph([x, y, z], [e1, e2])
MergeOptimizer().optimize(g)
assert str(g) == "FunctionGraph(*1 -> Op3(Op2(x, y)), *1)"
def test_deep_merge(self):
x, y, z = inputs()
e = op1(op3(op2(x, y), z), op4(op3(op2(x, y), z)))
g = FunctionGraph([x, y, z], [e], clone=False)
MergeOptimizer().optimize(g)
out_var = g.outputs[0]
var_1, var_2 = out_var.owner.inputs
assert var_2.owner.inputs[0] is var_1
def test_straightforward(self):
x, y, z = inputs()
e = op1(op2(x, y), op2(x, y), op2(x, z))
g = FunctionGraph([x, y, z], [e], clone=False)
MergeOptimizer().optimize(g)
out_var = g.outputs[0]
var_1, var_2, var_3 = out_var.owner.inputs
assert var_1 is var_2
assert var_1 is not var_3
def test_constant_merging(self):
x = MyVariable("x")
y = Constant(MyType(), 2, name="y")
z = Constant(MyType(), 2, name="z")
e = op1(op2(x, y), op2(x, y), op2(x, z))
g = FunctionGraph([x, y, z], [e])
MergeOptimizer().optimize(g)
strg = str(g)
assert (strg == "FunctionGraph(Op1(*1 -> Op2(x, y), *1, *1))"
or strg == "FunctionGraph(Op1(*1 -> Op2(x, z), *1, *1))")
def test_constant_merging(self):
x = MyVariable("x")
y = Constant(MyType(), 2, name="y")
z = Constant(MyType(), 2, name="z")
e = op1(op2(x, y), op2(x, y), op2(x, z))
g = FunctionGraph([x, y, z], [e], clone=False)
MergeOptimizer().optimize(g)
out_var = g.outputs[0]
var_1, var_2, var_3 = out_var.owner.inputs
assert var_1 is var_2
assert var_2 is var_3
def test_change_input(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
var6 = MyVariable2("var6")
with pytest.raises(TypeError):
fg.change_input("output", 1, var6)
with pytest.raises(TypeError):
fg.change_input(var5.owner, 1, var6)
old_apply_nodes = set(fg.apply_nodes)
old_variables = set(fg.variables)
old_var5_clients = list(fg.get_clients(var5))
# We're replacing with the same variable, so nothing should happen
fg.change_input(var5.owner, 1, var2)
assert old_apply_nodes == fg.apply_nodes
assert old_variables == fg.variables
assert old_var5_clients == fg.get_clients(var5)
# Perform a valid `Apply` node input change
fg.change_input(var5.owner, 1, var1)
assert var5.owner.inputs[1] is var1
assert (var5.owner, 1) not in fg.get_clients(var2)
def test_remove_in_and_out(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
op1_out = op1(var2, var1)
op2_out = op2(op1_out, var2)
op3_out = op3(op2_out, var2, var2)
fg = FunctionGraph([var1, var2], [op1_out, op3_out], clone=False)
# Remove an output
fg.remove_output(1)
fg.check_integrity()
assert fg.outputs == [op1_out]
assert op3_out not in fg.clients
assert not any(op3_out.owner in clients
for clients in sum(fg.clients.values(), []))
# Remove an input
fg.remove_input(0)
fg.check_integrity()
assert var1 not in fg.variables
assert fg.inputs == [var2]
assert fg.outputs == []
assert not any(op1_out.owner in clients
for clients in sum(fg.clients.values(), []))
def test_remove_input(self):
var0 = MyVariable("var0")
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = MyVariable("var3")
var4 = MyVariable("var4")
op1_out = op1(var1, var0)
out0 = op2(op1_out, var2)
out1 = op1(var3, var4)
out1.name = "out1"
out2 = op1(out1, var0)
out2.name = "out2"
out3 = out1
fg = FunctionGraph(
[var0, var1, var2, var3, var4],
[out0, out1, out2, out3],
clone=False,
)
fg.remove_input(4)
fg.check_integrity()
assert fg.inputs == [var0, var1, var2, var3]
assert fg.outputs == [out0]
def test_remove_output_3(self):
var0 = MyVariable("var0")
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = MyVariable("var3")
var4 = MyVariable("var4")
var5 = MyVariable("var5")
var6 = MyVariable("var6")
op1_out = op1(var1, var0)
out0 = op2(op1_out, var2)
out1 = op1(var3, var4)
out1.name = "out1"
out2 = op1(op1_out, var5)
out2.name = "out2"
out3 = op1(var3, var6)
out3.name = "out3"
out4 = op1_out
out5 = var3
fg = FunctionGraph(
[var0, var1, var2, var3, var4, var5, var6],
[out0, out1, out2, out3, out4, out5],
clone=False,
)
fg.remove_output(1)
fg.check_integrity()
assert fg.inputs == [var0, var1, var2, var3, var4, var5, var6]
assert fg.outputs == [out0, out2, out3, out4, out5]
assert out1 not in fg.clients
def test_remove_node(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
node1_out = op1(var1)
node2_out = op2(var2, node1_out)
node3_out = op3(node2_out)
fg = FunctionGraph([var1, var2], [node3_out], clone=False)
fg.remove_node(node3_out.owner)
fg.check_integrity()
assert not fg.apply_nodes
fg = FunctionGraph([var1, var2], [node2_out, node3_out], clone=False)
fg.remove_node(node3_out.owner)
fg.check_integrity()
assert fg.apply_nodes == {node1_out.owner, node2_out.owner}
fg = FunctionGraph([var1, var2], [node2_out, node3_out], clone=False)
fg.remove_node(node2_out.owner)
fg.check_integrity()
assert not fg.apply_nodes
def test_check_integrity(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
with pytest.raises(Exception, match="The nodes are .*"):
fg.apply_nodes.remove(var5.owner)
fg.check_integrity()
with pytest.raises(Exception, match="Inconsistent clients.*"):
fg.apply_nodes.add(var5.owner)
fg.remove_client(var2, (var5.owner, 1))
fg.check_integrity()
fg.add_client(var2, (var5.owner, 1))
with pytest.raises(Exception, match="The variables are.*"):
fg.variables.remove(var4)
fg.check_integrity()
fg.variables.add(var4)
with pytest.raises(Exception, match="Undeclared input.*"):
var6 = MyVariable2("var6")
fg.clients[var6] = [(var5.owner, 3)]
fg.variables.add(var6)
var5.owner.inputs.append(var6)
fg.check_integrity()
fg.variables.remove(var6)
var5.owner.inputs.remove(var6)
# TODO: What if the index value is greater than 1? It will throw an
# `IndexError`, but that doesn't sound like anything we'd want.
with pytest.raises(Exception, match="Inconsistent clients list.*"):
fg.add_client(var4, ("output", 1))
fg.check_integrity()
fg.remove_client(var4, ("output", 1))
with pytest.raises(Exception, match="Client not in FunctionGraph.*"):
fg.add_client(var4, (var6.owner, 0))
fg.check_integrity()
fg.remove_client(var4, (var6.owner, 0))
with pytest.raises(Exception, match="Inconsistent clients list.*"):
fg.add_client(var4, (var3.owner, 0))
fg.check_integrity()
def test_replace_subgraph(self):
# replacing inside the graph
x, y, z = inputs()
e = op1(op2(x, y), z)
g = FunctionGraph([x, y, z], [e])
PatternOptimizer((op2, "1", "2"), (op1, "2", "1")).optimize(g)
assert str(g) == "FunctionGraph(Op1(Op1(y, x), z))"
def test_init(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var1)
var4 = op2(var3, var2)
fg = FunctionGraph([var1, var2], [var3, var4], clone=False)
assert fg.inputs == [var1, var2]
assert fg.outputs == [var3, var4]
assert fg.apply_nodes == {var3.owner, var4.owner}
assert fg.update_mapping is None
assert fg.check_integrity() is None
assert fg.variables == {var1, var2, var3, var4}
assert fg.get_clients(var1) == [(var3.owner, 0)]
assert fg.get_clients(var2) == [(var4.owner, 1)]
assert fg.get_clients(var3) == [(var4.owner, 0), ("output", 0)]
assert fg.get_clients(var4) == [("output", 1)]
fg = FunctionGraph(outputs=[var3, var4], clone=False)
assert fg.inputs == [var1, var2]
memo = {}
fg = FunctionGraph(outputs=[var3, var4], clone=True, memo=memo)
assert memo[var1].type == var1.type
assert memo[var1].name == var1.name
assert memo[var2].type == var2.type
assert memo[var2].name == var2.name
assert var3 in memo
assert var4 in memo
def test_replace_output(self):
# replacing the whole graph
x, y, z = inputs()
e = op1(op2(x, y), z)
g = FunctionGraph([x, y, z], [e])
PatternOptimizer((op1, (op2, "1", "2"), "3"),
(op4, "3", "2")).optimize(g)
assert str(g) == "FunctionGraph(Op4(z, y))"
def test_pickle(self):
var1 = op1()
var2 = op2()
var3 = op1(var1)
var4 = op2(var3, var2)
func = FunctionGraph([var1, var2], [var4])
s = pickle.dumps(func)
new_func = pickle.loads(s)
assert all(type(a) == type(b) for a, b in zip(func.inputs, new_func.inputs))
assert all(type(a) == type(b) for a, b in zip(func.outputs, new_func.outputs))
assert all(
type(a.op) is type(b.op) # noqa: E721
for a, b in zip(func.apply_nodes, new_func.apply_nodes)
)
assert all(a.type == b.type for a, b in zip(func.variables, new_func.variables))
def test_unification_2(self):
x, y, z = inputs()
e = op1(op2(x, y), z) # the arguments to op2 are different
g = FunctionGraph([x, y, z], [e])
PatternOptimizer(
(op1, (op2, "1", "1"), "2"), # they are the same in the pattern
(op4, "2", "1"),
).optimize(g)
# The replacement should NOT occur
assert str(g) == "FunctionGraph(Op1(Op2(x, y), z))"
def test_no_recurse(self):
# if the out pattern is an acceptable in pattern
# and that the ignore_newtrees flag is True,
# it should do the replacement and stop
x, y, z = inputs()
e = op1(op2(x, y), z)
g = FunctionGraph([x, y, z], [e])
PatternOptimizer((op2, "1", "2"), (op2, "2", "1"),
ign=True).optimize(g)
assert str(g) == "FunctionGraph(Op1(Op2(y, x), z))"
def test_unification_1(self):
x, y, z = MyVariable("x"), MyVariable("y"), MyVariable("z")
e = op1(op2(x, x), z) # the arguments to op2 are the same
g = FunctionGraph([x, y, z], [e])
PatternOptimizer(
(op1, (op2, "1", "1"), "2"), # they are the same in the pattern
(op4, "2", "1"),
).optimize(g)
# So the replacement should occur
assert str(g) == "FunctionGraph(Op4(z, x))"
def test_validate_inputs(self):
var1 = op1()
var2 = op2()
with pytest.raises(TypeError):
FunctionGraph(var1, [var2])
with pytest.raises(TypeError):
FunctionGraph([var1], var2)
with pytest.raises(ValueError):
var3 = op1(var1)
FunctionGraph([var3], [var2], clone=False)
def test_match_same_illegal(self):
x, y, z = inputs()
e = op2(op1(x, x), op1(x, y))
g = FunctionGraph([x, y, z], [e])
def constraint(r):
# Only replacing if the input is an instance of Op2
return r.owner.inputs[0] is not r.owner.inputs[1]
PatternOptimizer({
"pattern": (op1, "x", "y"),
"constraint": constraint
}, (op3, "x", "y")).optimize(g)
assert str(g) == "FunctionGraph(Op2(Op1(x, x), Op3(x, y)))"
def test_constraints(self):
x, y, z = inputs()
e = op4(op1(op2(x, y)), op1(op1(x, y)))
g = FunctionGraph([x, y, z], [e])
def constraint(r):
# Only replacing if the input is an instance of Op2
return r.owner.op == op2
PatternOptimizer((op1, {
"pattern": "1",
"constraint": constraint
}), (op3, "1")).optimize(g)
assert str(g) == "FunctionGraph(Op4(Op3(Op2(x, y)), Op1(Op1(x, y))))"
def test_contains(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
assert var1 in fg
assert var3 in fg
assert var3.owner in fg
assert var5 in fg
assert var5.owner in fg
def test_replace_bad_state(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
with pytest.raises(MissingInputError):
var0 = MyVariable("var0")
# FIXME TODO XXX: This breaks the state of the `FunctionGraph`,
# because it doesn't check for validity of the replacement *first*.
fg.replace(var1, var0, verbose=True)
def test_multiple_merges(self):
x, y, z = inputs()
e1 = op1(x, y)
e2 = op2(op3(x), y, z)
e = op1(e1, op4(e2, e1), op1(e2))
g = FunctionGraph([x, y, z], [e])
MergeOptimizer().optimize(g)
strg = str(g)
# note: graph.as_string can only produce the following two possibilities, but if
# the implementation was to change there are 6 other acceptable answers.
assert (
strg ==
"FunctionGraph(Op1(*1 -> Op1(x, y), Op4(*2 -> Op2(Op3(x), y, z), *1), Op1(*2)))"
or strg ==
"FunctionGraph(Op1(*2 -> Op1(x, y), Op4(*1 -> Op2(Op3(x), y, z), *2), Op1(*1)))"
)
def test_init(self):
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var1)
var4 = op2(var3, var2)
fg = FunctionGraph([var1, var2], [var3, var4], clone=False)
assert fg.inputs == [var1, var2]
assert fg.outputs == [var3, var4]
assert fg.apply_nodes == {var3.owner, var4.owner}
assert fg.update_mapping is None
assert fg.check_integrity() is None
assert fg.variables == {var1, var2, var3, var4}
assert fg.get_clients(var1) == [(var3.owner, 0)]
assert fg.get_clients(var2) == [(var4.owner, 1)]
assert fg.get_clients(var3) == [(var4.owner, 0), ("output", 0)]
assert fg.get_clients(var4) == [("output", 1)]
def test_replace_circular(self):
"""`FunctionGraph` allows cycles--for better or worse."""
var1 = MyVariable("var1")
var2 = MyVariable("var2")
var3 = op1(var2, var1)
var4 = op2(var3, var2)
var5 = op3(var4, var2, var2)
fg = FunctionGraph([var1, var2], [var3, var5], clone=False)
fg.replace_all([(var3, var4)])
# The following works (and is kind of gross), because `var4` has been
# mutated in-place
assert fg.apply_nodes == {var4.owner, var5.owner}
assert var4.owner.inputs == [var4, var2]
