Sinter Integration

ILPQEC provides a sinter decoder wrapper for benchmarking and sampling workflows that use Stim + sinter.

Install

pip install ilpqec[sinter]

This extra installs sinter and stim. The sinter adapter currently uses the direct HiGHS backend only.

Usage with sinter.collect

import sinter
import stim
from ilpqec.sinter_decoder import SinterIlpDecoder

circuit = stim.Circuit.generated(
    "surface_code:rotated_memory_x",
    distance=3,
    rounds=3,
    after_clifford_depolarization=0.01,
)

tasks = [
    sinter.Task(
        circuit=circuit,
        decoder="ilpqec",
        json_metadata={"d": 3, "r": 3},
    )
]

stats = sinter.collect(
    tasks=tasks,
    custom_decoders={"ilpqec": SinterIlpDecoder()},
)

Tuning the Solver

You can pass solver settings to the adapter:

decoder = SinterIlpDecoder(
    time_limit=30,
    gap=0.01,
    threads=4,
    verbose=False,
)

Any extra HiGHS options can be provided via options:

decoder = SinterIlpDecoder(options={"mip_rel_gap": 0.01})

Notes

• The adapter uses compile_decoder_for_dem and reuses the direct HiGHS model across shots for speed.
• Only the direct HiGHS backend is supported in sinter mode for now.