(New) Standardized Generators

libEnsemble now also supports all generators that implement the gest_api interface.

from gest_api.vocs import VOCS
from optimas.generators import GridSamplingGenerator

from libensemble.specs import GenSpecs

vocs = VOCS(
    variables={
        "x0": [-3.0, 2.0],
        "x1": [1.0, 5.0],
    },
    objectives={"f": "MAXIMIZE"},
)

generator = GridSamplingGenerator(vocs=vocs, n_steps=[7, 15])

gen_specs = GenSpecs(
    generator=generator,
    batch_size=4,
    vocs=vocs,
)
...

Included with libEnsemble

Sampling

Basic sampling

Various generators for sampling a space.

Optimization

APOSMM

Asynchronously Parallel Optimization Solver for finding Multiple Minima (paper).

Modeling and Approximation

gpCAM

Gaussian Process-based adaptive sampling using gpcam.

Verified Third Party Examples

Generators that implement the gest_api interface and are verified to work with libEnsemble.

The standardized interface was developed in partnership with their authors.

Xopt - https://github.com/xopt-org/Xopt 

Expected Improvement

Optimas - https://github.com/optimas-org/optimas 