ALAPSchedule¶
- class ALAPSchedule(*args, **kwargs)[ソース]¶
ベースクラス:
BaseSchedulerTransform
ALAP Scheduling pass, which schedules the stop time of instructions as late as possible.
See
BaseSchedulerTransform
for the detailed behavior of the control flow operation, i.e.c_if
.注釈
This base class has been superseded by
ALAPScheduleAnalysis
and the new scheduling workflow. It will be deprecated and subsequently removed in a future release.Scheduler initializer.
- パラメータ
durations – Durations of instructions to be used in scheduling
clbit_write_latency – A control flow constraints. Because standard superconducting quantum processor implement dispersive QND readout, the actual data transfer to the clbit happens after the round-trip stimulus signal is buffered and discriminated into quantum state. The interval
[t0, t0 + clbit_write_latency]
is regarded as idle time for clbits associated with the measure instruction. This defaults to 0 dt which is identical to Qiskit Pulse scheduler.conditional_latency – A control flow constraints. This value represents a latency of reading a classical register for the conditional operation. The gate operation occurs after this latency. This appears as a delay in front of the DAGOpNode of the gate. This defaults to 0 dt.
target – The
Target
representing the target backend, if bothdurations
and this are specified then this argument will take precedence anddurations
will be ignored.
Methods
Return the name of the pass.
Run the ALAPSchedule pass on dag.
Attributes
- CONDITIONAL_SUPPORTED = (<class 'qiskit.circuit.gate.Gate'>, <class 'qiskit.circuit.delay.Delay'>)¶
- is_analysis_pass¶
Check if the pass is an analysis pass.
If the pass is an AnalysisPass, that means that the pass can analyze the DAG and write the results of that analysis in the property set. Modifications on the DAG are not allowed by this kind of pass.
- is_transformation_pass¶
Check if the pass is a transformation pass.
If the pass is a TransformationPass, that means that the pass can manipulate the DAG, but cannot modify the property set (but it can be read).