z i~4SrSSKJr SSKrSSKrSSKrSSKJr SSKJ r SSK J r SSK J r SSKJr SS KJrJr \R&"\5r"S S \5r"S S \ 5rg)z:VF2Layout pass to find a layout using subgraph isomorphism)EnumN) vf2_mapping)Layout) AnalysisPass)TranspilerError) vf2_utils)vf2_layout_passMultiQEncounteredc$\rSrSrSrSrSrSrSrg)VF2LayoutStopReason z Stop reasons for VF2Layout pass.zsolution foundznonexistent solutionz>2q gates in basisN) __name__ __module__ __qualname____firstlineno____doc__SOLUTION_FOUNDNO_SOLUTION_FOUND MORE_THAN_2Q__static_attributes__rd/home/james-whalen/.local/lib/python3.13/site-packages/qiskit/transpiler/passes/layout/vf2_layout.pyr r s*%N.'Lrr cD^\rSrSrSrSU4SjjrSrSrU=r$) VF2Layout(aA pass for choosing a Layout of a circuit onto a Coupling graph, as a subgraph isomorphism problem, solved by VF2++. If a solution is found that means there is a "perfect layout" and that no further swap mapping or routing is needed. If a solution is found the layout will be set in the property set as ``property_set['layout']``. However, if no solution is found, no ``property_set['layout']`` is set. The stopping reason is set in ``property_set['VF2Layout_stop_reason']`` in all the cases and will be one of the values enumerated in ``VF2LayoutStopReason`` which has the following values: * ``"solution found"``: If a perfect layout was found. * ``"nonexistent solution"``: If no perfect layout was found. * ``">2q gates in basis"``: If VF2Layout can't work with basis By default, this pass will construct a heuristic scoring map based on the error rates in the provided ``target`` (or ``properties`` if ``target`` is not provided). However, analysis passes can be run prior to this pass and set ``vf2_avg_error_map`` in the property set with a :class:`~.ErrorMap` instance. If a value is ``NaN`` that is treated as an ideal edge For example if an error map is created as:: from qiskit.transpiler.passes.layout.vf2_utils import ErrorMap error_map = ErrorMap(3) error_map.add_error((0, 0), 0.0024) error_map.add_error((0, 1), 0.01) error_map.add_error((1, 1), 0.0032) that represents the error map for a 2 qubit target, where the avg 1q error rate is ``0.0024`` on qubit 0 and ``0.0032`` on qubit 1. Then the avg 2q error rate for gates that operate on (0, 1) is 0.01 and (1, 0) is not supported by the target. This will be used for scoring if it's set as the ``vf2_avg_error_map`` key in the property set when :class:`~.VF2Layout` is run. c>[TU]5 XplXlX lX0lX@lXPlX`lSUl g)a3Initialize a ``VF2Layout`` pass instance Args: coupling_map (CouplingMap): Directed graph representing a coupling map. strict_direction (bool): If True, considers the direction of the coupling map. Default is False. seed (int): Sets the seed of the PRNG. -1 Means no node shuffling. call_limit (int): The number of state visits to attempt in each execution of VF2. time_limit (float): The total time limit in seconds to run ``VF2Layout`` max_trials (int): The maximum number of trials to run VF2 to find a layout. If this is not specified the number of trials will be limited based on the number of edges in the interaction graph or the coupling graph (whichever is larger) if no other limits are set. If set to a value <= 0 no limit on the number of trials will be set. target (Target): A target representing the backend device to run ``VF2Layout`` on. If specified it will supersede a set value for ``coupling_map`` if the :class:`.Target` contains connectivity constraints. If the value of ``target`` models an ideal backend without any constraints then the value of ``coupling_map`` will be used. Raises: TypeError: At runtime, if neither ``coupling_map`` or ``target`` are provided. N) super__init__target coupling_mapstrict_directionseed call_limit time_limit max_trials avg_error_map) selfr!r"r#r$r%r&r __class__s rrVF2Layout.__init__Ms>F  ( 0 $$$!rc z^"URcURc [S5eURc&URURR5p2OURc#URn[R "U5nOVURR5nUc-[R "UR5nURnO URnUR SUlURS:XGa#[UUURURURURUR5nUc[R"UR S'g[R$UR S'UR'5VVs0sHupVUR(UU_M nnn[+U5n[R,"XU5UR S'UR.R15H!n UR SR3U 5 M# gURc[R4"X#5Ul[R6"XR5n U c[R UR S'gU upm"n [R8"U 5n[R:"X5n[R<"X0RUR5unnUbUR>b[A[BRDRGUR>55n[A[I[KU555RMU5nU(a%UROUVs/sHnUUPM sn5 URcjURc]URcP[KU RQ55n[KURRRQ55n[UUU5S-Ul [VRYS5 [[UU S S S URS 9nSnSn[\R\"5nS nU"4S jnUGHnUS- n[VRYSU5 [R$nUR'5VVs0sH unnUUU_M nnn[KU5[KU 5:Xa U"U5n GOXURc U"U5n GO@[R^"URUU T"U URUUS9n U S:Xa U"U5n GO[VRYSUU 5 Uc U"U5nU nO+U U:a%U"U5n[VRYSUU UU5 UnU nURbCURS :a3UUR:a#[VRYSUUR5 O`[\R\"5U- n!URcGMU!UR:dGM[VRYSU!UR5 O Uc[R"nO[R`"U UURc5T"UR5nUc[R"UR S'g[R,"XU5UR S'UR.R15H!n UR SR3U 5 M# WUR S'g![a [R UR S'gf=fs snnfs snfs snnf)zrun the layout methodNz)coupling_map or target must be specified.vf2_avg_error_mapVF2Layout_stop_reasonlayoutzRunning VF2 to find mappingsTF)subgraphid_orderinducedr$rct>[UR5VVs0sH upTUU_M snn5$s snnf)N)ritems)layout_mappingkvreverse_im_graph_node_maps rmapping_to_layout(VF2Layout.run..mapping_to_layouts8~G[G[G]^G]tq4Q7:G]^_ _^s4 zRunning trial: %s) edge_listbit_listgzTrial %s has score %szAFound layout %s has a lower score (%s) than previous best %s (%s)z'Trial %s is >= configured max trials %sz9L9Y9YD  5 6 MSJ%> %55h?$33HP&== ))T%:%: (  &,,": !>!>v||!LMNE#h-01<<^LI**+KAHQK+KL ?? "t'>4??CZ"%h&8&8&:"; "%l&8&8&B&B&D"E !"57JKbPDO 34     "YY[  ` G aKF LL,f 5-<: W !' !' &2#*t/BvQUQ`Q`G` FPTP_P_`99;3L*|t/N R OO u v  -??K%55""$)"" M$=P=b=b!!"9:*3*H*HVc*dD  h 'yy'')!!(+88=*6A12[% =P=]=]!!"9: P8,L@Vs%A[?\,5\2\7?'\)(\))r'r$r!r&r#r"r r%)NFNNNNN) rrrrrrryr __classcell__)r)s@rrr(s4"L +"ZkAkArr)renumrrNloggingrY rustworkxrqiskit.transpiler.layoutrqiskit.transpiler.basepassesrqiskit.transpiler.exceptionsrqiskit.transpiler.passes.layoutrqiskit._accelerate.vf2_layoutr r getLoggerrrWr rrrrrsWA !+585L   8 $($(}A }Ar