mirror of https://github.com/Qiskit/qiskit.git
41 lines
1.5 KiB
YAML
41 lines
1.5 KiB
YAML
---
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deprecations:
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- |
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Support for passing in lists of argument values to the :func:`~.transpile`
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function is deprecated and will be removed in the 0.25.0 release. This
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is being done to facilitate greatly reducing the overhead for parallel
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execution for transpiling multiple circuits at once. If you're using
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this functionality currently you can call :func:`~.transpile` multiple
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times instead. For example if you were previously doing something like::
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from qiskit.transpiler import CouplingMap
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from qiskit import QuantumCircuit
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from qiskit import transpile
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qc = QuantumCircuit(2)
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qc.h(0)
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qc.cx(0, 1)
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qc.measure_all()
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cmaps = [CouplingMap.from_heavy_hex(d) for d in range(3, 15, 2)]
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results = transpile([qc] * 6, coupling_map=cmaps)
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instead you should run something like::
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from itertools import cycle
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from qiskit.transpiler import CouplingMap
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from qiskit import QuantumCircuit
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from qiskit import transpile
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qc = QuantumCircuit(2)
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qc.h(0)
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qc.cx(0, 1)
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qc.measure_all()
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cmaps = [CouplingMap.from_heavy_hex(d) for d in range(3, 15, 2)]
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results = []
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for qc, cmap in zip(cycle([qc]), cmaps):
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results.append(transpile(qc, coupling_map=cmap))
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You can also leverage :func:`~.parallel_map` or ``multiprocessing`` from
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the Python standard library if you want to run this in parallel.
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