def test_random_device_placer_bad_device():
topo = cirq.LineTopology(8)
qubits = cirq.LineQubit.range(8)
circuit = cirq.testing.random_circuit(qubits, n_moments=8, op_density=1.0, random_state=52)
qp = cg.RandomDevicePlacer()
with pytest.raises(ValueError, match=r'.*shared_rt_info\.device.*'):
qp.place_circuit(
circuit,
problem_topology=topo,
shared_rt_info=cg.SharedRuntimeInfo(run_id='1'),
rs=np.random.RandomState(1),
)
def test_random_device_placer_small_device():
topo = cirq.TiltedSquareLattice(3, 3)
qubits = sorted(topo.nodes_to_gridqubits().values())
circuit = cirq.experiments.random_rotations_between_grid_interaction_layers_circuit(
qubits, depth=8, two_qubit_op_factory=lambda a, b, _: cirq.SQRT_ISWAP(a, b)
)
qp = cg.RandomDevicePlacer()
with pytest.raises(cg.CouldNotPlaceError):
qp.place_circuit(
circuit,
problem_topology=topo,
shared_rt_info=cg.SharedRuntimeInfo(run_id='1', device=cg.Foxtail),
rs=np.random.RandomState(1),
)
def rt_config(request):
if request.param == 'minimal':
return cg.QuantumRuntimeConfiguration(
processor_record=cg.SimulatedProcessorWithLocalDeviceRecord('rainbow')
)
elif request.param == 'full':
return cg.QuantumRuntimeConfiguration(
processor_record=cg.SimulatedProcessorWithLocalDeviceRecord('rainbow'),
run_id='unit-test',
random_seed=52,
qubit_placer=cg.RandomDevicePlacer(),
target_gateset=cirq.CZTargetGateset(),
)
raise ValueError(f"Unknown flavor {request}") # coverage: ignore
def test_random_device_placer_line():
topo = cirq.LineTopology(8)
qubits = cirq.LineQubit.range(8)
circuit = cirq.testing.random_circuit(qubits, n_moments=8, op_density=1.0, random_state=52)
qp = cg.RandomDevicePlacer()
circuit2, mapping = qp.place_circuit(
circuit,
problem_topology=topo,
shared_rt_info=cg.SharedRuntimeInfo(run_id='1', device=cg.Sycamore23),
rs=np.random.RandomState(1),
)
assert circuit is not circuit2
assert circuit != circuit2
assert all(q in cg.Sycamore23.qubit_set() for q in circuit2.all_qubits())
for k, v in mapping.items():
assert k != v
def test_device_missing_metadata():
class BadDevice(cirq.Device):
pass
topo = cirq.TiltedSquareLattice(3, 3)
qubits = sorted(topo.nodes_to_gridqubits().values())
circuit = cirq.experiments.random_rotations_between_grid_interaction_layers_circuit(
qubits,
depth=8,
two_qubit_op_factory=lambda a, b, _: cirq.SQRT_ISWAP(a, b))
qp = cg.RandomDevicePlacer()
with pytest.raises(ValueError):
qp.place_circuit(
circuit,
problem_topology=topo,
shared_rt_info=cg.SharedRuntimeInfo(run_id='1',
device=BadDevice()),
rs=np.random.RandomState(1),
)
def test_random_device_placer_tilted_square_lattice():
topo = cirq.TiltedSquareLattice(4, 2)
qubits = sorted(topo.nodes_to_gridqubits().values())
circuit = cirq.experiments.random_rotations_between_grid_interaction_layers_circuit(
qubits, depth=8, two_qubit_op_factory=lambda a, b, _: cirq.SQRT_ISWAP(a, b)
)
assert not all(q in cg.Sycamore23.qubit_set() for q in circuit.all_qubits())
qp = cg.RandomDevicePlacer()
circuit2, mapping = qp.place_circuit(
circuit,
problem_topology=topo,
shared_rt_info=cg.SharedRuntimeInfo(run_id='1', device=cg.Sycamore23),
rs=np.random.RandomState(1),
)
assert circuit is not circuit2
assert circuit != circuit2
assert all(q in cg.Sycamore23.qubit_set() for q in circuit2.all_qubits())
for k, v in mapping.items():
assert k != v
def test_random_device_placer_repr():
cirq.testing.assert_equivalent_repr(cg.RandomDevicePlacer(),
global_vals={'cirq_google': cg})
