def _assemble_pulse_gates(
circuit: QuantumCircuit, run_config: RunConfig
) -> Tuple[Optional[QasmExperimentCalibrations], Optional[PulseLibrary]]:
"""Assemble and return the circuit calibrations and associated pulse library, if there are any.
The calibrations themselves may reference the pulse library which is returned as a dict.
Args:
circuit: circuit which may have pulse calibrations
run_config: configuration of the runtime environment
Returns:
The calibrations and pulse library, if there are any
"""
if not circuit.calibrations:
return None, None
if not hasattr(run_config, "parametric_pulses"):
run_config.parametric_pulses = []
calibrations = []
pulse_library = {}
for gate, cals in circuit.calibrations.items():
for (qubits, params), schedule in cals.items():
qobj_instructions, _ = _assemble_schedule(
schedule,
converters.InstructionToQobjConverter(PulseQobjInstruction),
run_config,
pulse_library,
)
calibrations.append(
GateCalibration(str(gate), list(qubits), list(params),
qobj_instructions))
return QasmExperimentCalibrations(gates=calibrations), pulse_library
def _extract_common_calibrations(
experiments: List[QasmQobjExperiment],
) -> Tuple[List[QasmQobjExperiment], Optional[QasmExperimentCalibrations]]:
"""Given a list of ``QasmQobjExperiment``s, each of which may have calibrations in their
``config``, collect common calibrations into a global ``QasmExperimentCalibrations``
and delete them from their local experiments.
Args:
experiments: The list of Qasm experiments that are being assembled into one qobj
Returns:
The input experiments with modified calibrations, and common calibrations, if there
are any
"""
def index_calibrations() -> Dict[int, List[Tuple[int, GateCalibration]]]:
"""Map each calibration to all experiments that contain it."""
exp_indices = defaultdict(list)
for exp_idx, exp in enumerate(experiments):
for gate_cal in exp.config.calibrations.gates:
# They must be keyed on the hash or identical cals will be indexed separately
exp_indices[hash(gate_cal)].append((exp_idx, gate_cal))
return exp_indices
def collect_common_calibrations() -> List[GateCalibration]:
"""If a gate calibration appears in all experiments, collect it."""
common_calibrations = []
for _, exps_w_cal in exp_indices.items():
if len(exps_w_cal) == len(experiments):
_, gate_cal = exps_w_cal[0]
common_calibrations.append(gate_cal)
return common_calibrations
def remove_common_gate_calibrations(
exps: List[QasmQobjExperiment]) -> None:
"""For calibrations that appear in all experiments, remove them from the individual
experiment's ``config.calibrations``."""
for _, exps_w_cal in exp_indices.items():
if len(exps_w_cal) == len(exps):
for exp_idx, gate_cal in exps_w_cal:
exps[exp_idx].config.calibrations.gates.remove(gate_cal)
if not (experiments and all(
hasattr(exp.config, "calibrations") for exp in experiments)):
# No common calibrations
return experiments, None
exp_indices = index_calibrations()
common_calibrations = collect_common_calibrations()
remove_common_gate_calibrations(experiments)
# Remove the ``calibrations`` attribute if it's now empty
for exp in experiments:
if not exp.config.calibrations.gates:
del exp.config.calibrations
return experiments, QasmExperimentCalibrations(gates=common_calibrations)
def test_gate_calibrations_to_dict(self):
"""Test gate calibrations to dict."""
pulse_library = [PulseLibraryItem(name="test", samples=[1j, 1j])]
valid_qobj = QasmQobj(
qobj_id="12345",
header=QobjHeader(),
config=QasmQobjConfig(shots=1024,
memory_slots=2,
max_credits=10,
pulse_library=pulse_library),
experiments=[
QasmQobjExperiment(
instructions=[
QasmQobjInstruction(name="u1",
qubits=[1],
params=[0.4])
],
config=QasmQobjConfig(
calibrations=QasmExperimentCalibrations(gates=[
GateCalibration(name="u1",
qubits=[1],
params=[0.4],
instructions=[])
])),
)
],
)
res = valid_qobj.to_dict()
expected_dict = {
"qobj_id":
"12345",
"type":
"QASM",
"schema_version":
"1.3.0",
"header": {},
"config": {
"max_credits": 10,
"memory_slots": 2,
"shots": 1024,
"pulse_library": [{
"name": "test",
"samples": [1j, 1j]
}],
},
"experiments": [{
"instructions": [{
"name": "u1",
"params": [0.4],
"qubits": [1]
}],
"config": {
"calibrations": {
"gates": [{
"name": "u1",
"qubits": [1],
"params": [0.4],
"instructions": []
}]
}
},
"header": {},
}],
}
self.assertEqual(expected_dict, res)
def test_gate_calibrations_to_dict(self):
"""Test gate calibrations to dict."""
pulse_library = [PulseLibraryItem(name='test', samples=[1j, 1j])]
valid_qobj = QasmQobj(
qobj_id='12345',
header=QobjHeader(),
config=QasmQobjConfig(shots=1024,
memory_slots=2,
max_credits=10,
pulse_library=pulse_library),
experiments=[
QasmQobjExperiment(
instructions=[
QasmQobjInstruction(name='u1',
qubits=[1],
params=[0.4])
],
config=QasmQobjConfig(
calibrations=QasmExperimentCalibrations(gates=[
GateCalibration(name='u1',
qubits=[1],
params=[0.4],
instructions=[])
])))
])
res = valid_qobj.to_dict(validate=True)
expected_dict = {
'qobj_id':
'12345',
'type':
'QASM',
'schema_version':
'1.3.0',
'header': {},
'config': {
'max_credits': 10,
'memory_slots': 2,
'shots': 1024,
'pulse_library': [{
'name': 'test',
'samples': [1j, 1j]
}]
},
'experiments': [{
'instructions': [{
'name': 'u1',
'params': [0.4],
'qubits': [1]
}],
'config': {
'calibrations': {
'gates': [{
'name': 'u1',
'qubits': [1],
'params': [0.4],
'instructions': []
}]
}
},
'header': {}
}],
}
self.assertEqual(expected_dict, res)