dwave.system.composites.TilingComposite.sample

TilingComposite.sample(bqm, **kwargs)

Sample from the provided binary quadratic model

Parameters:

• bqm (dimod.BinaryQuadraticModel) – Binary quadratic model to be sampled from.
• **kwargs – Optional keyword arguments for the sampling method, specified per solver.

Returns:

dimod.Response

Examples

This example uses TilingComposite to instantiate a composed sampler that submits a simple Ising problem of just two variables that map to qubits 0 and 1 on the D-Wave solver selected by the user’s default D-Wave Cloud Client configuration file. (The simplicity of this example obviates the need for an embedding composite.) Because the problem fits in a single Chimera unit cell, it is tiled across the solver’s entire Chimera graph, resulting in multiple samples.

>>> from dwave.system.samplers import DWaveSampler
>>> from dwave.system.composites import EmbeddingComposite, TilingComposite
>>> sampler = TilingComposite(DWaveSampler(), 1, 1, 4)
>>> response = sampler.sample_ising({0: -1, 1: 1}, {})
>>> for sample in response.samples():    
...     print(sample)
...
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
{0: 1, 1: -1}
>>> # Snipped above response for brevity