dwave-system - 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.

- Python
Published by randomir 6 months ago

dwave-system - 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.

- Python
Published by randomir 6 months ago

dwave-system - 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.

- Python
Published by randomir 9 months ago

dwave-system - 1.31.0

New Features

Add problem info to the NL sampler result. See https://github.com/dwavesystems/dwave-system/pull/565.
Add anneal_schedule_with_offset() function. See https://github.com/dwavesystems/dwave-system/pull/568.
Add energy_scales_custom_schedule() function. See https://github.com/dwavesystems/dwave-system/pull/570.

Fixes

Fix DWaveCliqueSampler sometimes creating out-of-range biases. See https://github.com/dwavesystems/dwave-system/pull/572.

- Python
Published by arcondello 9 months ago

dwave-system - 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.

- Python
Published by randomir 11 months ago

dwave-system - 1.29.1

New Features

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

- Python
Published by arcondello 12 months ago

dwave-system - 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:

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

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

- Python
Published by randomir 12 months ago

dwave-system - 1.28.0

New Features

Add option to specify sampler used in MockDWaveSampler (new default is now SteepestDescentSampler). See https://github.com/dwavesystems/dwave-system/pull/537.
Add support for Python 3.13. See https://github.com/dwavesystems/dwave-system/pull/541.
Add LinearAncillaComposite. See https://github.com/dwavesystems/dwave-system/pull/530.

Fixes

Fix inconsistent sampleset interface across hybrid samplers - we make sure every SampleSet returned now has a working wait_id() method. See https://github.com/dwavesystems/dwave-system/pull/544.

Upgrade Notes

Drop support for Python 3.8. See https://github.com/dwavesystems/dwave-system/pull/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 https://github.com/dwavesystems/dwave-system/pull/543.

- Python
Published by randomir about 1 year ago

dwave-system - 1.27.0

New Features

Update for dwave-optimization~=0.4.0. See https://github.com/dwavesystems/dwave-system/pull/539

- Python
Published by arcondello over 1 year ago

dwave-system - 1.26.0

Fixes

Use default resource class for macos builds on CircleCI. See #523.
Remove ambiguous xrefs to reduce build warnings. See #524.
Update for dwave-cloud-client~=0.13 and dwave-optimization~=0.3.0. See #533, #534.

Deprecation Notes

Deprecate VirtualGraphComposite. See #532.

- Python
Published by randomir over 1 year ago

dwave-system - 1.25.0

New Features

Add LeapHybridNLSampler. See https://github.com/dwavesystems/dwave-system/pull/518.

Fixes

Update MockDWaveSampler for fast anneal. See https://github.com/dwavesystems/dwave-system/pull/520.
Remove conditional aggregation from ReverseBatchStatesComposite. See https://github.com/dwavesystems/dwave-system/pull/517.

- Python
Published by randomir over 1 year ago

dwave-system - 1.25.0.dev0

New Features

Add LeapHybridNLSampler

- Python
Published by randomir over 1 year ago

dwave-system - 1.24.0

New Features

Conversion from flux_biases (units of Phi0) to h (unitless) and vice-versa. See https://github.com/dwavesystems/dwave-system/pull/513.

Fixes

Adapt MockLeapHybridSolver to work with cloud-client 0.11.3+. See https://github.com/dwavesystems/dwave-system/pull/515.

- Python
Published by randomir almost 2 years ago

dwave-system - 1.23.0

New Features

NetworkX is no longer a direct dependency. See https://github.com/dwavesystems/dwave-system/issues/504.

Deprecation Notes

Deprecate common_working_graph(). It will be removed in dwave-system 2.0. Use networkx.intersection() instead.

- Python
Published by arcondello about 2 years ago

dwave-system - 1.22.0

New Features

Add support for Python 3.12.
Update the properties of the MockDWaveSampler to be more realistic. See https://github.com/dwavesystems/dwave-system/pull/503.

- Python
Published by arcondello about 2 years ago

dwave-system - 1.21.0

New Features

Add support for dwave-cloud-client~=0.11.0. See https://github.com/dwavesystems/dwave-system/pull/500.
Improve performance of BQM embedding. See https://github.com/dwavesystems/dwave-system/pull/498.

Fixes

Fix networkx missing from requirements. See https://github.com/dwavesystems/dwave-system/issues/494.
Add time unit missing in docs. See https://github.com/dwavesystems/dwave-system/pull/497.

Upgrade Notes

Drop support for Python 3.7. See https://github.com/dwavesystems/dwave-system/pull/499.

- Python
Published by randomir over 2 years ago

dwave-system - 1.20.0

New Features

Support Python 3.11

Upgrade Notes

Require dimod>=0.12.7

- Python
Published by arcondello over 2 years ago

dwave-system - 1.19.0

New Features

Improved documentation. See https://github.com/dwavesystems/dwave-system/pull/491.

Fixes

Add missing dwave.embedding.zephyr namespace. See https://github.com/dwavesystems/dwave-system/pull/490.

- Python
Published by arcondello over 2 years ago

dwave-system - 1.18.0

Fixes

Fix the default time_limit calculation in LeapHybridCQMSampler. See https://github.com/dwavesystems/dwave-system/issues/482.

Upgrade Notes

Use SciPy>=1.7.3
Use dwave-samplers rather than dwave-greedy
Use NumPy>=1.20.0
Use dwave-preprocessing>=0.5.0
Use dimod>=0.12.0

- Python
Published by arcondello about 3 years ago

dwave-system - 1.17.0

New Features

Respect low-level solver order on failover. See #479.

- Python
Published by arcondello about 3 years ago

dwave-system - 1.16.0

What's Changed

Fix QPU failover by signaling solver failover condition (on resolve). See https://github.com/dwavesystems/dwave-system/pull/465
Exact-solve for ground state in MockDWaveSampler on small problems. See https://github.com/dwavesystems/dwave-system/pull/476
Add dwave.systems.temperature submodule with effective_field, maximum_pseudolikelihood_temperature, freezeout_effective_temperature, fast_effective_temperature functions. See https://github.com/dwavesystems/dwave-system/pull/436

- Python
Published by arcondello over 3 years ago

dwave-system - 1.15.1

New Features

Remove the upper bound on dwave-preprocessing's version

- Python
Published by arcondello over 3 years ago

dwave-system - 1.15.0

New Features

Add support for Zephyr topology and new solver property per_group_coupling_range to DWaveCliqueSampler.
Introduce dwave.embedding.zephyr module.

Fixes

Fix deprecation warning in LeapHybridSampler.

- Python
Published by arcondello over 3 years ago

dwave-system - 1.14.0

New Features

Add support for dwave-cloud-client~=0.10.0

- Python
Published by randomir almost 4 years ago

dwave-system - 1.13.1

New Features

Support dwave-preprocessing<0.5

- Python
Published by arcondello almost 4 years ago

dwave-system - 1.13.0

New Features

DWaveSampler.to_networkx_graph() now supports Zephyr architecture
Support dimod<0.13.0

Upgrade Notes

Drop support for Python 3.6

- Python
Published by arcondello almost 4 years ago

dwave-system - 1.12.0

New Features

Improved error message when submitting problems that are too large to LeapHybridCQMSampler.
Added coupler and qubits parameters to MockDWaveSampler

- Python
Published by arcondello about 4 years ago

dwave-system - 1.11.0

New Features

Add TilingComposite support for Advantage processor (https://github.com/dwavesystems/dwave-system/pull/431)
Add support for Pegasus and Zephyr topologies to DWaveMockSampler (https://github.com/dwavesystems/dwave-system/pull/431, https://github.com/dwavesystems/dwave-system/pull/432)
Add support for Python 3.10 (https://github.com/dwavesystems/dwave-system/pull/437)

- Python
Published by randomir about 4 years ago

dwave-system - 1.10.0

New Features

Add LeapHybridCQMSampler
Backport support for legacy solver config override (see https://github.com/dwavesystems/dwave-system/issues/363) via a DWAVE_FEATURE_FLAGS env var
Add LeapHybridBQMSampler alias for LeapHybridSampler to the dwave.system namespace

- Python
Published by arcondello over 4 years ago

dwave-system - 1.9.0

New Features

Suggest using the EmbeddingComposite when the hardware graph is incompatible (https://github.com/dwavesystems/dwave-system/pull/424)
Support dwave-cloud-client 0.9.x

- Python
Published by randomir over 4 years ago

dwave-system - 1.8.0

New Features

Scale the problem submitted to DWaveCliqueSampler to avoid per_qubit_coupling_range violations. https://github.com/dwavesystems/dwave-system/pull/417

Fixes

Properly account for DQMs with offsets in LeapHybridDQMSampler. https://github.com/dwavesystems/dwave-system/pull/415
Fix support for dimod 0.9. https://github.com/dwavesystems/dwave-system/pull/421
Use soft defaults-level solver filtering in Leap hybrid samplers, fixing https://github.com/dwavesystems/dwave-system/issues/363. Solver for hybrid samplers can now be defined via a config file and environment variable, not just via argument to the sampler.
Fix tests not to depend on QPU topology availability. https://github.com/dwavesystems/dwave-system/pull/423

- Python
Published by randomir over 4 years ago

dwave-system - 1.7.0

New Features

Support CaseLabelDQM https://github.com/dwavesystems/dwave-system/pull/409
Support dimod 0.10.x

- Python
Published by arcondello over 4 years ago

dwave-system - 1.6.0

Fixes

Updated sphinx and docs conf (#400)
Documented samplers async behavior (#408)
Added more properties to MockDWaveSampler (#403)
CI refactored; leaner integration tests (#405)

Changes

Dropped Python 3.5 support (#405)

- Python
Published by randomir over 4 years ago

dwave-system - 1.6.0.dev0

- Python
Published by randomir over 4 years ago

dwave-system - 1.5.0

Fixes

Docstring formatting fixes https://github.com/dwavesystems/dwave-system/pull/387
Chain strength documentation fixes https://github.com/dwavesystems/dwave-system/pull/391
Fix broken documentation links https://github.com/dwavesystems/dwave-system/pull/396

Features

DWaveCliqueSampler can fail over https://github.com/dwavesystems/dwave-system/pull/395
Add MockLeapHybridDQMSampler https://github.com/dwavesystems/dwave-system/pull/399

- Python
Published by arcondello almost 5 years ago

dwave-system - 1.4.0

New Features

Support for problem labels (all samplers now accept an optional label kwarg)
Label on VirtualGraphComposite flux bias measurements

Fixes

Hybrid samplers now properly select the latest version of an appropriate hybrid solver
Python 2 cruft cleanup

- Python
Published by randomir about 5 years ago

dwave-system - 1.3.0

New Features

ReverseBatchStatesComposite now inherits from dimod.Initialized and by default reverse anneals
ReverseAdvanceComposite now reverse anneals by default with schedule [[0, 1], [1, 0.35], [9, 0.35], [10, 1]]

Fixes

EmbeddedStructure is now deep copy-able
Embedding composites now raise correct warnings even when chain strengths are provided as a dict

Changes

Many dwave.embedding utility functions have been migrated to minorminer, though they are still imported into their original namespaces

- Python
Published by arcondello about 5 years ago

dwave-system - 1.2.1

Fixes

Doctest now passes

- Python
Published by randomir over 5 years ago

dwave-system - 1.2.0

New Features

LeapHybridSampler.min_time_limit method
Improved documentation of LeapHybridDQMSampler
More sanity checks on time_limit in LeapHybridDQMSampler

Changes

LeapHybridDQMSampler.sample_dqm's compressed keyword argument has been deprecated in favor of compress

- Python
Published by arcondello over 5 years ago

dwave-system - 1.1.1

Fixes

Correctly propagate kwargs through LeapHybridDQMSampler.sample

- Python
Published by randomir over 5 years ago

dwave-system - 1.1.0

New Features

LeapHybridDQMSampler

Fixes

embed_bqm now always returns a BQM rather than sometimes returning a view

- Python
Published by arcondello over 5 years ago

dwave-system - 1.0.0

Changes

All samplers now strongly prefer either a QPU or a hybrid solver (#288). See Sampler behavior changes in 1.0.0 for details.
Removed deprecated solver_features kwarg in DWaveSampler
Removed deprecated order_by kwarg in DWave(Clique)Sampler

- Python
Published by randomir over 5 years ago

dwave-system - 0.9.13

New Features

New chain strength tuning methods, uniform_torque_compensation and scaled
Embedding composites now use uniform_torque_compensation to set the default chain strength
MockDWaveSampler.sample now accepts **kwarg for greater flexibility when testing

Fixes

embed_bqm no longer raises an error when EmbeddedStructure and target_adjacency are both provided. It now raises a deprecation warning

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.12

Fixes

Fix bug in DWaveCliqueSampler chain strength formula

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.11

Fixes

Improved chain strength calculation in DWaveCliqueSampler

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.10

New Features

DWaveSampler.to_networkx_graph method
A faster implementation of embed_bqm
A EmbeddedStructure class.
Improved chain strength in DWaveCliqueSampler

Fixes

DWaveCliqueSampler now correctly supports legacy software solvers

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.9

New Features

DWaveCliqueSampler
order_by kwarg in DWaveSampler constructor
LeapHybridSampler uses BQM serialization version 2.0

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.7

New Features

Embedding composites no longer block

Fixes

MockDWaveSampler now has the correct topology
Fix rounding in anneal schedule validation

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.6

Fixes

LeapHybridSampler now correctly chooses solvers that accept the bqm problem type

New Features

Biclique support for Pegasus

- Python
Published by arcondello over 5 years ago

dwave-system - 0.9.5

New Features

unembed_sampleset now accepts multiple chain break resolution methods

- Python
Published by arcondello almost 6 years ago

dwave-system - 0.9.4

Fixes

Fixed QUBO sampling bug in DWaveSampler introduced in 0.9.2 (#286)

- Python
Published by randomir almost 6 years ago

dwave-system - 0.9.3

Fixes

Install dwave-tabu which is needed for the dwave.system.testing module

- Python
Published by arcondello almost 6 years ago

dwave-system - 0.9.2

New Features

Updated documentation
LeapHybridSampler and DWaveSampler both now make use of the cloud client's Future.sampleset attribute
LeapHybridSampler no longer blocks
DWaveSampler.sample no longer blocks
LeapHybridSampler now sets client=base by default

Fixes

Fixed warning descriptions to be more consistent
embed_bqm now raises a MissingChainError when provided with zero-length chains

- Python
Published by arcondello almost 6 years ago

dwave-system - 0.9.1

Support dwave-cloud-client 0.7.x

- Python
Published by arcondello almost 6 years ago

dwave-system - 0.9.0

Changes

Support only python 3.5+

New Features

Add ChainStrengthWarning, EnergyScaleWarning, TooFewSamplesWarning
Support dwave setup command
Support for Leap2's hybrid sampling service through the new LeapHybridSampler

- Python
Published by arcondello almost 6 years ago

dwave-system - 0.8.1

New Features

BatchReverseComposite and ReverseAdvanceComposite
Failover support in DWaveSampler
Embedding composites now return QPU problem_id in sampleset's info field and additional embedding context/parameters
Warnings generation (during embedding/unembedding)

- Python
Published by randomir about 6 years ago

dwave-system - 0.8.0

New Features

Embedding composites can now return embedding in sampleset's info field

Changes

Upgraded to 0.6.x branch of the cloud client which adds support for unstructured solvers, and improves polling and error handling

- Python
Published by randomir over 6 years ago

dwave-system - 0.7.6

New Features

Chain break methods now accept sample-like inputs
DWaveSampler.sample_ising matches the cloud-client's behaviour for 0 biases in a list

Fixes

Fix isolated variables with zero biases in PolyCutOffComposite
Catch the correct exception in from child_structure_dfs in the AutoEmbeddingComposite
Fix chimera.find_clique_embedding's to work with two-variable cliques

- Python
Published by arcondello over 6 years ago

dwave-system - 0.7.5

Fixes

DWaveSampler now raises the correct exception when given a mismatched QUBO

- Python
Published by arcondello over 6 years ago

dwave-system - 0.7.4

New Features

chain_break_method sampling parameter for embedding composites
EmbeddingComposite accepts a find_embedding parameter
ramp schedule function
AutoEmbeddingComposite
Embedding composites now use depth first search to find the structure of their children
Add new scale_aware keyword argument for embedding composites so they work nicely with the ScaleComposite
DWaveSampler now raises an exception when the problem does not match the QPU

Fixes

VirtualGraphComposite now correctly uses the chain_strength provided/calculated at construction

Changes

Deprecated FixedEmbeddingComposite's source_adjacency parameter

- Python
Published by arcondello over 6 years ago

dwave-system - 0.7.3

New Features

draw_chimera_bqm function to draw a Chimera-structured binary quadratic model.
common_working_graph function that finds a graph with the nodes and edges common to two graphs.

Fixes

chain_break_frequency now correctly uses the number of occurrences in its calculations.
dwave.embedding.chimera.find_clique_embedding now handles the K1 and K2 special cases and returns and embedding of optimal chain length.
TilingComposite now propagates SampleSet.info returned by its child sampler.

- Python
Published by arcondello almost 7 years ago

dwave-system - 0.7.2

New Features

CutOffComposite and PolyCutOffComposite
Support 'nice' Pegasus labelling with pegasus.find_clique_embedding

- Python
Published by arcondello almost 7 years ago

dwave-system - 0.7.1

Fixes

Remove dwave-networkx version upper bound to resolve version conflicts

- Python
Published by arcondello about 7 years ago

dwave-system - 0.7.0

Changes

Use the dwave.embedding namespace for embedding utilities rather than dimod.embedding
Use dimod 0.8.x, especially SampleSet rather than Response.

New Features

dwave.embedding namespace
broken_chains function to find broken chains in samplesets
chain break resolution functions: discard, majority_vote, weighted_random, MinimizeEnergy
embed_bqm, embed_ising and embed_qubo functions.
unembed_sampleset function
target_to_source function that determines the source graph from a target graph and embedding
chain_to_quadratic function that finds the quadratic biases that induce a chain
chain_break_frequency function to find the frequency of chains being broken in a sample set
find_clique_embedding function for pegasus
Exceptions for specific embedding issues in dwave.embedding.exceptions

Bug Fixes

EmbeddingComposite embeds in spin-space, eliminating some energy range errors.

- Python
Published by arcondello about 7 years ago

dwave-system - 0.6.0

Add LazyFixedEmbeddingComposite
Use feature-based solver definition in DWaveSampler

- Python
Published by randomir about 7 years ago

dwave-system - 0.5.4

New dwave.embedding subpackage

- Python
Published by arcondello over 7 years ago

dwave-system - 0.5.3

bug fixes for initial_state kwarg
propagate chain break fraction by default

- Python
Published by arcondello over 7 years ago

dwave-system - 0.5.2

- Python
Published by arcondello over 7 years ago

dwave-system - 0.5.1

Handle anneal schedules better

- Python
Published by arcondello over 7 years ago

dwave-system - 0.5.0

Update to use dimod 0.7.x

- Python
Published by arcondello over 7 years ago

dwave-system - 0.4.0

Depends on dwave-drivers rather than dwave-system-tuning
VirtualGraphComposite now uses the FixedEmbeddingComposite to handle embedding
Disables embedding caching functionality for now

- Python
Published by arcondello over 7 years ago