Differences between different D-Wave QPU instances

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  David J  (Report)

  December 28, 2023 17:43 (Edited December 28, 2023 17:43)

  Hello,

  QPUs of the same generation have similar performance and yield.

  This page outlines QPU-specific characteristics for the systems available at present:
  https://docs.dwavesys.com/docs/latest/doc_physical_properties.html#doc-qpu-characteristics

  Hopefully this helps with your question.

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  Georg K  (Report)

  July 12, 2024 08:55

  How can I specify in the DWaveSampler() which QPU I want to access e.g. Advantage_system6.3 ? And how can I make sure that I always access the exact same machine?

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  Georg K  (Report)

  July 12, 2024 09:04

  for other users:

  FixedEmbeddingComposite(DWaveSampler(solver=dict(topology__type='pegasus', name='Advantage_system6.4'),

                                                          token=token),

                                                          embedding,

                                                          )

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  Mohammad D  (Report)

  July 12, 2024 23:05

  Hi Georg,

  Yes, a specific solver can be specified either within the code (as you have shown above), the config file or the environmental variables.

   

  Alternative sample of selecting a specific solver in code:

  sampler = DWaveSampler(solver='Advantage_system6.4')

   

  Sample of selecting a specific solver within the dwave.conf config file:

  [defaults]
  token = *******************
  solver=Advantage_system6.4

   

  or a mix of both

  dwave.conf config file

  [my_profile_name]
  token = *******************
  solver=Advantage_system6.4

  code:

  sampler = EmbeddingComposite(DWaveSampler({profile='my_profile_name'}))

   

   

  If using the same solver is not required, solvers can also be automatically selected based on features, i.e. The solver with the highest number of qubits etc..., more information available in these articles: 

  https://support.dwavesys.com/hc/en-us/articles/1500007171721-What-is-Feature-Based-Solver-Selection 

  https://support.dwavesys.com/hc/en-us/articles/360056388233-How-Does-the-DWaveSampler-DWaveCliqueSampler-Select-a-Solver

   

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