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There is a solver that can make effective use of GPUs (shameless self-promotion): https://github.com/nicolasprevot/GpuShareSat
It is a VERY fun work. Code entirely written by Nicolas Prevot, a magician of CUDA. Paper link here: https://comp.nus.edu.sg/~meel/Papers/sat21-psm.pdf
That is true, but there are many interesting heuristics in modern SAT solvers, such as kissat: https://github.com/arminbiere/kissat (winner for a few years now). LBD ("glues" in glucose) is one of them. Kissat is actually quite readable. More readable is CaDiCaL, also extremely fast and effective: https://github.com/arminbiere/cadical
I personally also develop a SAT solver called CryptoMiniSat, but the above two are easier to read :)
That is true, but there are many interesting heuristics in modern SAT solvers, such as kissat: https://github.com/arminbiere/kissat (winner for a few years now). LBD ("glues" in glucose) is one of them. Kissat is actually quite readable. More readable is CaDiCaL, also extremely fast and effective: https://github.com/arminbiere/cadical
I personally also develop a SAT solver called CryptoMiniSat, but the above two are easier to read :)
For anyone who understands easier through code, I suggest:
https://github.com/msoos/minisat-v1.14
It's an early version of MiniSat by Niklas Eén and Niklas Sörensson. You can get the original ZIP from minisat.se, but it's easier to read from GitHub. Enjoy!
ManySAT: http://www.cril.univ-artois.fr/~jabbour/manysat.htm
It shares short conflict clauses between parallel solvers and achieves superlinear speedup in some cases, e.g., 4 parallel solvers solve faster than one forth of the single solver soolution time.
Short conflict clauses are rare so there is little communication between solvers required.
CryptoMiniSAT: https://github.com/msoos/cryptominisat
Author's goal to have solver that is good in computing range from single CPU up to cluster. Judging from CryptoMiniSAT successes, he has mostly reached the goal.