Remove pulse defaults for old fake 20q backends

qiskit/compiler/assembler.py

@@ -494,13 +494,15 @@ def _parse_circuit_args(
     parameter_binds = parameter_binds or []
     # create run configuration and populate
     run_config_dict = dict(parameter_binds=parameter_binds, **run_config)
-    if backend:
-        run_config_dict["parametric_pulses"] = getattr(
-            backend.configuration(), "parametric_pulses", []
-        )
-    if parametric_pulses:
+    if parametric_pulses is None:
+        if backend:
+            run_config_dict["parametric_pulses"] = getattr(
+                backend.configuration(), "parametric_pulses", []
+            )
+        else:
+            run_config_dict["parametric_pulses"] = []
+    else:
         run_config_dict["parametric_pulses"] = parametric_pulses
-
     if meas_level:
         run_config_dict["meas_level"] = meas_level
         # only enable `meas_return` if `meas_level` isn't classified

qiskit/providers/fake_provider/backends/almaden/fake_almaden.py

@@ -15,7 +15,7 @@
 """
 
 import os
-from qiskit.providers.fake_provider import fake_pulse_backend, fake_backend
+from qiskit.providers.fake_provider import fake_qasm_backend, fake_backend
 
 
 class FakeAlmadenV2(fake_backend.FakeBackendV2):
@@ -35,11 +35,10 @@ class FakeAlmadenV2(fake_backend.FakeBackendV2):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_almaden.json"
     props_filename = "props_almaden.json"
-    defs_filename = "defs_almaden.json"
     backend_name = "fake_almaden_v2"
 
 
-class FakeAlmaden(fake_pulse_backend.FakePulseBackend):
+class FakeAlmaden(fake_qasm_backend.FakeQasmBackend):
     """A fake Almaden backend.
 
     .. code-block:: text
@@ -56,5 +55,4 @@ class FakeAlmaden(fake_pulse_backend.FakePulseBackend):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_almaden.json"
     props_filename = "props_almaden.json"
-    defs_filename = "defs_almaden.json"
     backend_name = "fake_almaden"

qiskit/providers/fake_provider/backends/johannesburg/fake_johannesburg.py

@@ -15,7 +15,7 @@
 """
 
 import os
-from qiskit.providers.fake_provider import fake_pulse_backend, fake_backend
+from qiskit.providers.fake_provider import fake_qasm_backend, fake_backend
 
 
 class FakeJohannesburgV2(fake_backend.FakeBackendV2):
@@ -35,11 +35,10 @@ class FakeJohannesburgV2(fake_backend.FakeBackendV2):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_johannesburg.json"
     props_filename = "props_johannesburg.json"
-    defs_filename = "defs_johannesburg.json"
     backend_name = "fake_johannesburg_v2"
 
 
-class FakeJohannesburg(fake_pulse_backend.FakePulseBackend):
+class FakeJohannesburg(fake_qasm_backend.FakeQasmBackend):
     """A fake Johannesburg backend.
 
     .. code-block:: text
@@ -56,5 +55,4 @@ class FakeJohannesburg(fake_pulse_backend.FakePulseBackend):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_johannesburg.json"
     props_filename = "props_johannesburg.json"
-    defs_filename = "defs_johannesburg.json"
     backend_name = "fake_johannesburg"

qiskit/providers/fake_provider/backends/singapore/fake_singapore.py

@@ -15,7 +15,7 @@
 """
 
 import os
-from qiskit.providers.fake_provider import fake_pulse_backend, fake_backend
+from qiskit.providers.fake_provider import fake_qasm_backend, fake_backend
 
 
 class FakeSingaporeV2(fake_backend.FakeBackendV2):
@@ -35,11 +35,10 @@ class FakeSingaporeV2(fake_backend.FakeBackendV2):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_singapore.json"
     props_filename = "props_singapore.json"
-    defs_filename = "defs_singapore.json"
     backend_name = "fake_singapore_v2"
 
 
-class FakeSingapore(fake_pulse_backend.FakePulseBackend):
+class FakeSingapore(fake_qasm_backend.FakeQasmBackend):
     """A fake Singapore backend.
 
     .. code-block:: text
@@ -56,5 +55,4 @@ class FakeSingapore(fake_pulse_backend.FakePulseBackend):
     dirname = os.path.dirname(__file__)
     conf_filename = "conf_singapore.json"
     props_filename = "props_singapore.json"
-    defs_filename = "defs_singapore.json"
     backend_name = "fake_singapore"

qiskit/visualization/pulse_v2/interface.py

@@ -312,50 +312,50 @@ def draw(
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.pulse_v2 import draw
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0, 1)
             qc.measure_all()
-            qc = transpile(qc, FakeAlmaden(), layout_method='trivial')
-            sched = schedule(qc, FakeAlmaden())
+            qc = transpile(qc, FakeBoeblingen(), layout_method='trivial')
+            sched = schedule(qc, FakeBoeblingen())
 
-            draw(sched, backend=FakeAlmaden())
+            draw(sched, backend=FakeBoeblingen())
 
         Drawing with the stylesheet suited for publication.
 
         .. jupyter-execute::
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.pulse_v2 import draw, IQXSimple
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0, 1)
             qc.measure_all()
-            qc = transpile(qc, FakeAlmaden(), layout_method='trivial')
-            sched = schedule(qc, FakeAlmaden())
+            qc = transpile(qc, FakeBoeblingen(), layout_method='trivial')
+            sched = schedule(qc, FakeBoeblingen())
 
-            draw(sched, style=IQXSimple(), backend=FakeAlmaden())
+            draw(sched, style=IQXSimple(), backend=FakeBoeblingen())
 
         Drawing with the stylesheet suited for program debugging.
 
         .. jupyter-execute::
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.pulse_v2 import draw, IQXDebugging
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0, 1)
             qc.measure_all()
-            qc = transpile(qc, FakeAlmaden(), layout_method='trivial')
-            sched = schedule(qc, FakeAlmaden())
+            qc = transpile(qc, FakeBoeblingen(), layout_method='trivial')
+            sched = schedule(qc, FakeBoeblingen())
 
-            draw(sched, style=IQXDebugging(), backend=FakeAlmaden())
+            draw(sched, style=IQXDebugging(), backend=FakeBoeblingen())
 
         You can partially customize a preset stylesheet when initializing it.
 
@@ -368,7 +368,7 @@ def draw(
             }
             style = IQXStandard(**my_style)
             # draw
-            draw(sched, style=style, backend=FakeAlmaden())
+            draw(sched, style=style, backend=FakeBoeblingen())
 
         In the same way as above, you can create custom generator or layout functions
         and update the existing stylesheet with custom functions.

qiskit/visualization/timeline/interface.py

@@ -291,13 +291,13 @@ def draw(
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.timeline import draw
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0,1)
 
-            qc = transpile(qc, FakeAlmaden(), scheduling_method='alap', layout_method='trivial')
+            qc = transpile(qc, FakeBoeblingen(), scheduling_method='alap', layout_method='trivial')
             draw(qc)
 
         Drawing with the simple stylesheet.
@@ -306,13 +306,13 @@ def draw(
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.timeline import draw, IQXSimple
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0,1)
 
-            qc = transpile(qc, FakeAlmaden(), scheduling_method='alap', layout_method='trivial')
+            qc = transpile(qc, FakeBoeblingen(), scheduling_method='alap', layout_method='trivial')
             draw(qc, style=IQXSimple())
 
         Drawing with the stylesheet suited for program debugging.
@@ -321,13 +321,13 @@ def draw(
 
             from qiskit import QuantumCircuit, transpile, schedule
             from qiskit.visualization.timeline import draw, IQXDebugging
-            from qiskit.providers.fake_provider import FakeAlmaden
+            from qiskit.providers.fake_provider import FakeBoeblingen
 
             qc = QuantumCircuit(2)
             qc.h(0)
             qc.cx(0,1)
 
-            qc = transpile(qc, FakeAlmaden(), scheduling_method='alap', layout_method='trivial')
+            qc = transpile(qc, FakeBoeblingen(), scheduling_method='alap', layout_method='trivial')
             draw(qc, style=IQXDebugging())
 
         You can partially customize a preset stylesheet when call it::

releasenotes/notes/remove-pulse-defs-old-20q-4ed46085b4a15678.yaml

@@ -0,0 +1,21 @@
+---
+upgrade:
+  - |
+    The fake backend objects :class:`~.FakeJohannesburg`,
+    :class:`~.FakeJohannesburgV2`, :class:`~.FakeAlmaden`,
+    :class:`~.FakeAlmadenV2`, :class:`~.FakeSingapore`, and
+    :class:`~.FakeSingaporeV2` no longer contain the pulse defaults payloads.
+    This means for the :class:`~.BackendV1` based classes the
+    :meth:`.BackendV1.defaults` method and pulse simulation via
+    :meth:`.BackendV1.run` is no longer available. For :class:`~.BackendV2`
+    based classes the :attr:`~InstructionProperties.calibration` property for
+    instructions in the :class:`~.Target` is no longer populated. This
+    change was done because these systems had exceedingly large pulse defaults
+    payloads (in total ~50MB) due to using sampled waveforms instead of
+    parameteric pulse definitions. These three payload files took > 50% of the
+    disk space required to install qiskit-terra. When weighed against the
+    potential value of being able to compile with pulse awareness or pulse
+    simulate these retired devices the file size is not worth the cost. If
+    you require to leverage these properties you can leverage an older version
+    of Qiskit and leverage :mod:`~qiskit.qpy` to transfer circuits from
+    older versions of qiskit into the current release.

test/python/compiler/test_assembler.py

@@ -36,7 +36,7 @@
     FakeOpenPulse2Q,
     FakeOpenPulse3Q,
     FakeYorktown,
-    FakeAlmaden,
+    FakeHanoi,
 )
 
 
@@ -1194,7 +1194,8 @@ def test_pulse_name_conflicts(self):
 
     def test_pulse_name_conflicts_in_other_schedule(self):
         """Test two pulses with the same name in different schedule can be resolved."""
-        backend = FakeAlmaden()
+        backend = FakeHanoi()
+        defaults = backend.defaults()
 
         schedules = []
         ch_d0 = pulse.DriveChannel(0)
@@ -1204,7 +1205,9 @@ def test_pulse_name_conflicts_in_other_schedule(self):
             sched += measure(qubits=[0], backend=backend) << 100
             schedules.append(sched)
 
-        qobj = assemble(schedules, backend)
+        qobj = assemble(
+            schedules, qubit_lo_freq=defaults.qubit_freq_est, meas_lo_freq=defaults.meas_freq_est
+        )
 
         # two user pulses and one measurement pulse should be contained
         self.assertEqual(len(qobj.config.pulse_library), 3)
@@ -1330,7 +1333,7 @@ def test_assemble_parametric_unsupported(self):
 
     def test_assemble_parametric_pulse_kwarg_with_backend_setting(self):
         """Test that parametric pulses respect the kwarg over backend"""
-        backend = FakeAlmaden()
+        backend = FakeHanoi()
 
         qc = QuantumCircuit(1, 1)
         qc.x(0)
@@ -1345,7 +1348,7 @@ def test_assemble_parametric_pulse_kwarg_with_backend_setting(self):
 
     def test_assemble_parametric_pulse_kwarg_empty_list_with_backend_setting(self):
         """Test that parametric pulses respect the kwarg as empty list over backend"""
-        backend = FakeAlmaden()
+        backend = FakeHanoi()
 
         qc = QuantumCircuit(1, 1)
         qc.x(0)

test/python/compiler/test_transpiler.py

@@ -35,7 +35,12 @@
 from qiskit.circuit.library import CXGate, U3Gate, U2Gate, U1Gate, RXGate, RYGate, RZGate, UGate
 from qiskit.circuit.measure import Measure
 from qiskit.test import QiskitTestCase
-from qiskit.providers.fake_provider import FakeMelbourne, FakeRueschlikon, FakeAlmaden, FakeMumbaiV2
+from qiskit.providers.fake_provider import (
+    FakeMelbourne,
+    FakeRueschlikon,
+    FakeBoeblingen,
+    FakeMumbaiV2,
+)
 from qiskit.transpiler import Layout, CouplingMap
 from qiskit.transpiler import PassManager
 from qiskit.transpiler.target import Target
@@ -1047,7 +1052,7 @@ def test_transpiled_custom_gates_calibration(self):
         circ.add_calibration(custom_180, [0], q0_x180)
         circ.add_calibration(custom_90, [1], q1_y90)
 
-        backend = FakeAlmaden()
+        backend = FakeBoeblingen()
         transpiled_circuit = transpile(
             circ,
             backend=backend,
@@ -1068,7 +1073,7 @@ def test_transpiled_basis_gates_calibrations(self):
         # Add calibration
         circ.add_calibration("h", [0], q0_x180)
 
-        backend = FakeAlmaden()
+        backend = FakeBoeblingen()
         transpiled_circuit = transpile(
             circ,
             backend=backend,
@@ -1088,7 +1093,7 @@ def test_transpile_calibrated_custom_gate_on_diff_qubit(self):
         # Add calibration
         circ.add_calibration(custom_180, [1], q0_x180)
 
-        backend = FakeAlmaden()
+        backend = FakeBoeblingen()
         with self.assertRaises(QiskitError):
             transpile(circ, backend=backend, layout_method="trivial")
 
@@ -1105,7 +1110,7 @@ def test_transpile_calibrated_nonbasis_gate_on_diff_qubit(self):
         # Add calibration
         circ.add_calibration("h", [1], q0_x180)
 
-        backend = FakeAlmaden()
+        backend = FakeBoeblingen()
         transpiled_circuit = transpile(
             circ,
             backend=backend,
@@ -1129,7 +1134,7 @@ def test_transpile_subset_of_calibrated_gates(self):
         circ.add_calibration(x_180, [0], q0_x180)
         circ.add_calibration("h", [1], q0_x180)  # 'h' is calibrated on qubit 1
 
-        transpiled_circ = transpile(circ, FakeAlmaden(), layout_method="trivial")
+        transpiled_circ = transpile(circ, FakeBoeblingen(), layout_method="trivial")
         self.assertEqual(set(transpiled_circ.count_ops().keys()), {"u2", "mycustom", "h"})
 
     def test_parameterized_calibrations_transpile(self):
@@ -1146,10 +1151,10 @@ def q0_rxt(tau):
 
         circ.add_calibration("rxt", [0], q0_rxt(tau), [2 * 3.14 * tau])
 
-        transpiled_circ = transpile(circ, FakeAlmaden(), layout_method="trivial")
+        transpiled_circ = transpile(circ, FakeBoeblingen(), layout_method="trivial")
         self.assertEqual(set(transpiled_circ.count_ops().keys()), {"rxt"})
         circ = circ.assign_parameters({tau: 1})
-        transpiled_circ = transpile(circ, FakeAlmaden(), layout_method="trivial")
+        transpiled_circ = transpile(circ, FakeBoeblingen(), layout_method="trivial")
         self.assertEqual(set(transpiled_circ.count_ops().keys()), {"rxt"})
 
     def test_inst_durations_from_calibrations(self):
@@ -1176,7 +1181,7 @@ def test_multiqubit_gates_calibrations(self, opt_level):
         custom_gate = Gate("my_custom_gate", 5, [])
         circ.append(custom_gate, [0, 1, 2, 3, 4])
         circ.measure_all()
-        backend = FakeAlmaden()
+        backend = FakeBoeblingen()
         with pulse.build(backend, name="custom") as my_schedule:
             pulse.play(
                 pulse.library.Gaussian(duration=128, amp=0.1, sigma=16), pulse.drive_channel(0)
@@ -1331,9 +1336,9 @@ def test_transpile_optional_registers(self, optimization_level):
 
         qc.measure(qubits, clbits)
 
-        out = transpile(qc, FakeAlmaden(), optimization_level=optimization_level)
+        out = transpile(qc, FakeBoeblingen(), optimization_level=optimization_level)
 
-        self.assertEqual(len(out.qubits), FakeAlmaden().configuration().num_qubits)
+        self.assertEqual(len(out.qubits), FakeBoeblingen().configuration().num_qubits)
         self.assertEqual(out.clbits, clbits)
 
     @data(0, 1, 2, 3)