1.34.0

New Features

• Add support for Python 3.14.

• Add .wait_id method to a future returned by LeapHybridNLSampler. See #602.

Upgrade Notes

• Drop support for Python 3.9.

• Remove vfyc solver property and max_answers solver parameter from DWaveMockSampler to reflect the current state of solver properties returned by SAPI. See #600.

Bug Fixes

• Fix handling of initial_state kwarg for the sampling routine: instead of handling this parameter incorrectly an warning is thrown (parameter not mocked), as per other unsupported arguments. See #587.

1.33.0

New Features

• Begin using reno for changelog.

  We began using Reno as a changelog tool after the release of 1.32.0. Content added before that release is not included. See releases for previous release notes.

• Add support for the new solver identity concept available in dwave-cloud-client>=0.14.0.

• Speed-up embedding/unembedding in all embedding composites for the special case of one-to-one embeddings, i.e. subgraphs.

  See #579.

• chain_strength and initial_state are now supported as sampling options in ParallelEmbeddingComposite.

  ParallelEmbeddingComposite is updated with a new sample_multiple helper function to allow different bqms, initial_states and chain_strengths on all embeddings.

1.33.0rc1

New Features

• Begin using reno for changelog.

  We began using Reno as a changelog tool after the release of 1.32.0. Content added before that release is not included. See releases for previous release notes.

• Add support for the new solver identity concept available in dwave-cloud-client>=0.14.0.

• Speed-up embedding/unembedding in all embedding composites for the special case of one-to-one embeddings, i.e. subgraphs.

  See #579.

1.32.0

New Features

• Add ParallelEmbeddingComposite, a generalization of the TilingComposite that can handle bigger and non-Chimera source graphs on any structured graph supported by DWaveSampler (including Zephyr). See #569.

Deprecation Notes

• TilingComposite is deprecated in favor of ParallelEmbeddingComposite and it will be removed in dwave-system 2.0. See #577.

Upgrade Notes

• Switch from pkgutil to native namespace package. See #571.

1.31.0

New Features

• Add problem info to the NL sampler result. See #565.
• Add anneal_schedule_with_offset() function. See #568.
• Add energy_scales_custom_schedule() function. See #570.

Fixes

• Fix DWaveCliqueSampler sometimes creating out-of-range biases. See #572.

1.30.0

New Features

• Make samplers and composites scoped. See #555.

• Restructure and update references for unified documentation. See #560.

• Add multiparameter pseudolikelihood estimation, include background susceptibility. See #562.

1.29.1

New Features

• Support dwave-optimization versions 0.6 and 0.7. See #559.

1.29.0

New Features

• Add close() to all QPU and hybrid samplers. See #77, #554.

• Add support for context manager protocol to all samplers. See #91, #556.

  The recommended way to use DWaveSampler is now from a runtime context:

  with DWaveSampler() as sampler:
      sampler.sample_ising(...)

  Alternatively, call the close() method to terminate the sampler resources:

  sampler = DWaveSampler()
  ...
  sampler.close()
  

1.28.0

New Features

• Add option to specify sampler used in MockDWaveSampler (new default is now SteepestDescentSampler). See #537.

• Add support for Python 3.13. See #541.

• Add LinearAncillaComposite. See #530.

Fixes

• Fix inconsistent sampleset interface across hybrid samplers - we make sure every SampleSet returned now has a working wait_id() method. See #544.

Upgrade Notes

• Drop support for Python 3.8. See #541.

• Soft-remove VirtualGraphComposite and its dependencies. Namely, VirtualGraphComposite is now just an identity wrapper around FixedEmbeddingComposite, dwave-drivers is not used anymore, and dwave.system.cache.* is completely removed. See #543.

1.27.0

New Features

• Update for dwave-optimization~=0.4.0. See #539