def _run_job(self, qobj):
"""Run a Qobj on the backend."""
self._validate(qobj)
final_state_key = 32767 # Internal key for final state snapshot
# Add final snapshots to circuits
for experiment in qobj.experiments:
experiment.instructions.append(
QobjInstruction.from_dict({
'name': '#snapshot',
'params': [final_state_key]
}))
result = super()._run_job(qobj)
# Extract final state snapshot and move to 'statevector' data field
for res in result._result['result']:
snapshots = res['data']['snapshots']
if str(final_state_key) in snapshots:
final_state_key = str(final_state_key)
# Pop off final snapshot added above
final_state = snapshots.pop(final_state_key, None)
final_state = final_state['statevector'][0]
# Add final state to results data
res['data']['statevector'] = final_state
# Remove snapshot dict if empty
if snapshots == {}:
res['data'].pop('snapshots', None)
return result
def _run_job(self, qobj):
"""Run a Qobj on the backend."""
self._validate(qobj)
final_state_key = 32767 # Internal key for final state snapshot
# Add final snapshots to circuits
for circuit in qobj.circuits:
circuit.compiled_circuit.operations.append(
QobjInstruction.from_dict({
'name': 'snapshot',
'params': [final_state_key]
}))
result = super()._run_job(qobj)._result
# Replace backend name with current backend
result['backend'] = self._configuration['name']
# Extract final state snapshot and move to 'statevector' data field
for res in result['result']:
snapshots = res['data']['snapshots']
if str(final_state_key) in snapshots:
final_state_key = str(final_state_key)
# Pop off final snapshot added above
final_state = snapshots.pop(final_state_key, None)
final_state = final_state['statevector'][0]
# Add final state to results data
res['data']['statevector'] = final_state
# Remove snapshot dict if empty
if snapshots == {}:
res['data'].pop('snapshots', None)
return Result(result)
def _run_job(self, job_id, qobj):
"""Run circuits in qobj and return the result
Args:
qobj (Qobj): Qobj structure
job_id (str): A job id
Returns:
qiskit.Result: Result is a class including the information to be returned to users.
Specifically, result_list in the return contains the essential information,
which looks like this::
[{'data':
{
'statevector': array([sqrt(2)/2, 0, 0, sqrt(2)/2], dtype=object),
},
'status': 'DONE'
}]
"""
self._validate(qobj)
final_state_key = '32767' # Internal key for final state snapshot
# Add final snapshots to circuits
for circuit in qobj.experiments:
circuit.instructions.append(
QobjInstruction.from_dict({
'name': 'snapshot',
'params': [final_state_key]
}))
qobj.config.shots = 1
result_dict = super()._run_job(job_id, qobj).to_dict()
# Extract final state snapshot and move to 'statevector' data field
for res in result_dict['results']:
snapshots = res['data']['snapshots']
# Pop off final snapshot added above
final_state = snapshots.pop(final_state_key, None)
final_state = final_state['statevector'][0]
# Add final state to results data
res['data']['statevector'] = final_state
# Remove snapshot dict if empty
if snapshots == {}:
res['data'].pop('snapshots', None)
return Result.from_dict(result_dict)