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]