Tradeoffs of different solvers

[RefaatIsmail]

The available solvers in the package are listed as:
available_decoders = [
"Solver", # the solver with the highest accuracy, but may change across different versions
"SolverSerialJointSingleHair",
"SolverSerialSingleHair",
"SolverSerialUnionFind" ]

It would be nice to have a brief idea of their differences and tradeoffs. So far, I have been mostly using "SolverSerialJointSingleHair" because I want something stable as compared to "Solver". Which solver performs best? or is it circuit dependent?

If I set cluster_node_limit=0; does all solvers fallback to the same Union Find decoder? or is it dependent on which solver I use?

Thanks in advance!

[yuewuo]

Sorry I didn't realize there is another opening issue: the paper is just out yesterday which can answer your question. Indeed, setting cluster_node_limit to 0 falls back to the same weighted Hypergraph Union Find decoder.

https://arxiv.org/abs/2508.04969