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InstructionDurationCheck

qiskit.transpiler.passes.InstructionDurationCheck(*args, **kwargs)GitHub(opens in a new tab)

Bases: AnalysisPass

Duration validation pass for reschedule.

This pass investigates the input quantum circuit and checks if the circuit requires rescheduling for execution. Note that this pass can be triggered without scheduling. This pass only checks the duration of delay instructions and user defined pulse gates, which report duration values without pre-scheduling.

This pass assumes backend supported instructions, i.e. basis gates, have no violation of the hardware alignment constraints, which is true in general.

Create new duration validation pass.

The alignment values depend on the control electronics of your quantum processor.

Parameters

  • acquire_alignment – Integer number representing the minimum time resolution to trigger acquisition instruction in units of dt.
  • pulse_alignment – Integer number representing the minimum time resolution to trigger gate instruction in units of dt.

Attributes

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).


Methods

execute

execute(passmanager_ir, state, callback=None)

Execute optimization task for input Qiskit IR.

Parameters

Returns

Optimized Qiskit IR and state of the workflow.

Return type

tuple(opens in a new tab)[Any(opens in a new tab), qiskit.passmanager.compilation_status.PassManagerState]

name

name()

Name of the pass.

Return type

str(opens in a new tab)

run

run(dag)

Run duration validation passes.

Parameters

dag (DAGCircuit) – DAG circuit to check instruction durations.

update_status

update_status(state, run_state)

Update workflow status.

Parameters

  • state (PassManagerState) – Pass manager state to update.
  • run_state (RunState) – Completion status of current task.

Returns

Updated pass manager state.

Return type

PassManagerState

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