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Independent optimization agents: shared proposals, selections and experiment learning #15
Description
Latest integrator snapshot (2026-10-09): continuous independent exactly-three/select-one loop ACTIVE; no accepted optimization/no Tier3. User authorized a separate original-baseline correctness repair: issue58/draftPR59, fresh repair/gh58-original-baseline-crash from24572d6. Minimal partition soft-list retirement fix f06ac3d passed independent source/cost-accounting review; candidate build, mandatory regression and full scientific gates pending. No newly designated baseline or performance promotion. Earlier backtrace evidence durably e375fc4; later detailed host metadata retained locally pending scoped publication review. Linux released6072029417/no active worker, Windows none. Shared indices c5b9e08; latest named comments govern ownership. Existing performance outcomes and independent selections remain preserved below.
User clarification: each agent independently proposes three methods, selects one, and runs its own single-hypothesis experiment. This hub shares selections/results; it is NOT an H010 implementation team.
Shared baseline and scope
- DistQLDPC baseline:
24572d6d09cce9a4a5faa58300a89e0feba9da6a. - Latest history/docs: branch
experiment/h001-logical-row-xor; never use its H001 source as baseline. - Read AGENTS, optimization policy, STATE/HYPOTHESES, existing issues/PRs and E001–E006 learning before proposing.
- QDistSAT benchmark platform and our downstream MaxCDCL-derived engine are distinct.
- No accepted optimization. E006 locally REJECT/NOT ADOPTED, dedicated corroboration pending.
Independent agent workflow
- BRAIN: propose exactly three independent methods, rank them and select one. Record mechanism, code location, expected cases, risk/cost, prior-attempt relation, paper/section/BibTeX if applicable.
- REGISTER: create one issue titled
[Agent experiment] <agent-id>: <selected mechanism>, containing all three proposals and choice. Use issue-specific hypothesis/record IDs (GH--A/B/C, experiment GH-) to avoid global numbering collisions. Publish issue link in this hub. - CHECK DUPLICATES: read open AND closed selections and recent hub comments, then reread after registering. Compare actual conceptual mechanism/configuration, not title. If same active original experiment was selected concurrently, lower issue number keeps it; other agent selects a different proposal or explicitly preregisters a scientifically useful replication. GitHub search can lag; this rule is advisory, not an atomic lock.
- EXECUTE: isolated worktree/branch from immutable baseline, exactly one conceptual performance change, preregister before implementation. Never modify another agent's checkout or branch. Each experiment gets its own PR and durable record directory.
- MEASURE: research/code inspection may proceed in parallel; only ONE named runner per host executes queued performance jobs. Request a named host assignment here before local build/test/diagnostic or timed work; latest assignment/release comments determine the current owner. The primary execution task currently coordinates allocation. Team total must satisfy global spare>50% and <=half spare; no shared sibling benchmark. Preserve fixed inputs/timeouts and separate diagnostic vs controlled conclusions.
- EVALUATE/LEARN: Tier0 correctness before Tier1; baseline/candidate three-repeat medians per four Tier1 cases and mode, raw retained. Tier2 only by gates or separately documented user exploratory exception. No Tier3 scheduled by setup. Mismatch stops/rejects. Keep ACCEPT/REJECT/INCONCLUSIVE plus evidence and uncertainty; no cherry-picking/noise claims. Shared CI timings are informational.
- SHARE: update own issue with commits/PR/evidence/learning. Sole integrator reconciles common STATE/HYPOTHESES; agents do not race-write shared indices. Later experiments use the pinned original baseline until a newly reviewed baseline is explicitly designated.
Hub state
- Continuous three-proposal -> choose-one -> execute -> learn loop ACTIVE; no accepted optimization yet.
- Integrator/host scheduler: primary execution task; GitHub comments contain latest assignments/releases.
- No current host worker: Linux released6072029417; Windows none. GH58 correctness support preparation is source-only. No performance promotion before scientific repair validation; latest named assignment/release comments govern ownership.
- Latest server snapshot around92% global spare, pair102/230100%idle. Actual fixed-pair lease reservation verified during work; no whole-host exclusive reservation. Global>50/half-spare single-worker capacity and separately preregistered timing guards retained. Forcedroot-supervisordeath recovery remains untested.
- All experiments remain independent on24572d6, one conceptual change and isolated branch/PR; timing one runner per host.
Current selection ledger
| Agent | Issue / PR | Three proposals | Selected | Current disposition |
|---|---|---|---|---|
| codex-primary-20261008 | #16 / #19 | PGO / scratch reuse / cap2FLA | PGO | Tier0PASS, Tier1+exploratoryTier2 complete60correct; INCONCLUSIVE/SHELVED/NOTADOPTED; noTier3 |
| independent-brain-20261008 | #17 / #18 | scratch / lazycleanup / prefetch | scratch | Tier0PASS,9/328 predicted allocations saved; performanceINCONCLUSIVE/lowprioritySHELVED |
| review-brain-20261008 | #20 / #23 | identitytail skip / symmetricVSIDS / lazycleanup | identitytail skip | Tier0PASS;48 correctTier1;all8mediansslower, localSHELVED/NOTADOPTED/formalINCONCLUSIVE |
| independent-brain-20261008-round2 | #21 / #24 | O2 / nativeISA / cap2FLA | O2 only | 60sciencePASS; exploratoryLP340 OFF+.011% / MTO-1.426%, overlappingranges; INCONCLUSIVE/NOTADOPTED, noTier3;3d89ec8 |
| codex-primary-next-20261008 | #22 / #25 | symmetricVSIDS / Clangbackend / cap2FLA | symmetricVSIDS | 48sciencePASS, OFFGM+12.84% / MTOGM-15.74%; genericlocalREJECT, formalINCONCLUSIVE;594rawverified/c0154aa; noTier2/3 |
| academic-brain-20261009 | #26 / #29 | cap2FLA / exactSCIPpresolve / H005prefetch | cap2FLA | SHELVED/UNPROVEN8ebf543; limited model/reader proof, full weighted-K/rollback certification unestablished; no performance |
| review-brain-20261009-round2 | #27 / #28 | enqueueprefixinline / lazycleanup / exactrepresentativereuse | enqueueprefixinline | Tier0PASS;48 Tier1+12 exploratory LP340 sciencePASS; tiny overlap changes, INCONCLUSIVE/NOTADOPTED/noTier3; a7d48b8 |
| codex-primary-round3 | #30 / #31 | MTO-gatedVSIDS / Clangbackend / sharedcap2FLA | MTO-gatedVSIDS | Tier0PASS;60 scientific results/120bounds correct, but LP340 MTO+114.202% disjoint serious regression; localREJECT/noTier3,0a236635/627raw |
| independent-brain-round3 | #32 / #33 | mtune-only / Clangbackend / cachedbinaryvalue | mtune-only | Tier0PASS;48 correct Tier1,7/8 medians slower; localREJECT/noTier2/3,52335caa/417raw |
| codex-primary-round4 | #36 / #37 | verifiedrow cap / nativeISA / hotentry alignment | generic verifiedrow cap | FullTier0PASS;48 correctTier1, seriousOFF regressions, localREJECT/noTier2/3;9994d7b/984raw |
| independent-brain-round4 | #38 / #39 | Clangbackend / cachedbinaryvalue / linkerGC | Clang codegen+GNU linking | FullTier0PASS;48correctTier1 but7/8slower/6disjoint, localREJECT/noTier2;607cataloguedraw exact a796fe4/48af8e8 |
| review-brain-round3 | #40 / #42 | ternarytail / initialUB2 / prefetch | ternarytail | FullTier0PASS;48 correctTier1 but all8ranges disjoint slower; localREJECT0b5b46cc/877raw; noTier2/3 |
| codex-primary-round5 | #41 / #43 | MTO-only verifiedrow / nativeISA / hotentryalignment | MTO-only verifiedrow | FullTier0PASS; isolatedTier148sciencePASS/numericINCON/MTOGM-25.1116%/OFFoverlap, c10bd81/225raw; exploratoryLP34012 complete MTO-25.815873%/OFF overlap, eadd2f3/89raw; SPECIALIZED_DIAGNOSTIC/noadopt/Tier3 |
| review-brain-round4 | #44 / #45 | fixed-v3 ISA / demand cleanup / initialUB2 | fixed -march=x86-64-v3 only | FullTier0PASS;48sciencePASS but3seriousdisjointregressions, localREJECT/noTier2/3 e94633d/958raw; released6068916180 |
| independent-brain-round5 | #46 / #47 | lookahead scratch / demandcleanup / basicccmin | lookahead learnt scratch capacity | Tier0gateREJECT on validbaselineWCNFcrash; candidatecausationunestablished/no perf,3de3beab/589raw/auditc397b7ed; PR47closedunmerged |
| review-brain-round5 | #48 / #49 | fixed-v2 ISA / Vec growth / restart interval | fixed -march=x86-64-v2 only | FullTier0PASS;48sciencePASS/tinynearzero mixedtimings, originalnumericREJECT/formalINCON/notadopted; aa2c21e/1014raw; exploratoryTier2 OFF+0.70735%/MTO-0.43445% overlap; SHELVE/formalINCON |
| independent-brain-round6 | #50 / #51 | cachedbinaryvalue / demandcleanup / exactbinaryLBD unroll | cachedbinaryvalue onlyForLK | Prerecordd9ec8bc BEFOREb6bd310; actual2object gate identical1168bytes+3relocs; SHELVE/no solver/science/perf;70text+73catalog/71publicblob proof008aa87/6a64fe47 |
| academic-brain-round2 | #52 / #56 | deferredsoft / weight-first / demandcleanup | deferred soft failure in ForLK | Source-only02e746c; focused fixtures uncompiled/full weighted certification pending; known GH46 anomaly mandatory |
| independent-brain-round7 | #53 / #54 | ccmin1 / demandcleanup / binaryLBD unroll | ccmin2->1 | Source closure766504bf; BLOCKED_FULL_CERTIFICATION/no CPU/perf |
| review-brain-round6 | #55 / #57 | Vecdouble / restart200 / memoizedBDD | guarded Vec doubling | Source-only8a1673b; allocation census/container/full correctness pending, no CPU/perf |
PGO durable full record90c35e5, all596rawpayloads Git-blobSHAverified,60sciencePASS and independent audit. Tier2OFF-0.535%/MTO+0.333%, overlappingranges/largevariation fails corroboration; no universalPGOrejection or controlledclaim. Sharedfailed/inconclusive learning retained. Protocol and reusable prompt published at documentation commit bc9c470. Latest agent registrations/results are in hub comments; the integrator periodically reconciles this table. No automatic agent launches or timed jobs are installed by setup.
Activity
[-]H010: coordinate multi-agent PGO experiment (setup only)[/-][+]Independent optimization agents: shared proposals, selections and experiment learning[/+]guluchen commentedon Oct 8, 2026
REGISTER agent=codex-primary-20261008 issue=#16 selected=H010 (GH-16-A)
baseline=24572d6d09cce9a4a5faa58300a89e0feba9da6a
mechanism=PGO-only compilation with fixed holdout training; complete child solver profiles required
status=PROPOSED / UNTESTED host-slot=NONE implementation-branch=unset
Shared setup published at documentation commit bc9c470 (history branch; NOT experiment baseline).
Every other agent independently proposes three and selects one. No role split on H010. Check open/closed records and recent registrations before selection; publish all results including negative/inconclusive evidence. Primary execution task remains initial integrator/host scheduler; no runner assigned yet, no new benchmark launched by setup. Research can proceed in parallel; timed work is queued per host.
Documentation validation PASS:67 local links,4 unique bibliography entries,balanced prompt fence and git diff check. Solver code/scientific semantics unchanged; no new Tier0/Tier1/Tier2 results.
guluchen commentedon Oct 8, 2026
User updates scope: each agent continuously repeats BRAIN(three proposals) -> SELECT(one) -> ANALYZE/EXECUTE -> EVALUATE/LEARN -> fresh BRAIN until a feasible optimization is supported by reproducible performance and unchanged scientific correctness. One rejected/inconclusive round is not the end; fresh attempts must have new rationale, no repeated trials until favorable. All tier/resource/review guards remain. Primary H010 preparation is now active; independent agent is researching/registering its own choice. Current yfclab2 read-only probe: global idle45.12%, CPU102 idle0%, sibling230 idle100%; below user capacity allowance, so no remote workload started. Documentation prompt is being updated with this continuing-loop instruction.
guluchen commentedon Oct 8, 2026
REGISTER agent=independent-brain-20261008 issue=#17 selected=GH-17-A
baseline=24572d6d09cce9a4a5faa58300a89e0feba9da6a
mechanism=caller-local setConflict oldset capacity reuse across core merges within each lookahead/restart invocation
branch=planned experiment/gh-17-independent-brain-20261008 status=PROPOSED / UNTESTED host-slot=NONE
Three independently ranked proposals: A selected scratch reuse; B demand-only watch cleanup in propagateForLK; C fixed one-watcher-ahead clause prefetch in propagateForLK. A matches shared unselected H011, not primary selected GH-16-A PGO. Profiling prerequisite retained because E003 did not establish allocation dominance. No implementation/build/profile/benchmark started. Request later ownership/host allocation for bounded baseline allocation diagnostic, Tier0 and any gated timings; no RUN_ASSIGNMENT yet. General engineering only, no invented academic BibTeX. Continuing BRAIN/SELECT/EVALUATE/LEARN loop acknowledged; no repeat-until-favorable sampling.
guluchen commentedon Oct 8, 2026
RUN_ASSIGNMENT (preparation/Tier0 only): runner=codex-primary-20261008, host=local Windows, issue16/H010, branch=experiment/gh16-pgo, pinned baseline24572d6. Scope: serial -j1 baseline/generation/use builds, fixed LP34/LP136 OFF/MTO training (120s each), profile completeness and small Tier0 validation. No Tier1 timing assignment yet; no other agent starts builds/training/benchmarks on this host concurrently. 3s read-only preflight global idle84.67%, CPU14/15 idle96.35%/98.96%; active work uses existing job affinity/capacity telemetry and records cleanup. yfclab2 remains below allowance/no jobs assigned. Independent issue17 research/static analysis can continue concurrently without significant host compute.
guluchen commentedon Oct 8, 2026
RUN_REQUEST agent=independent-brain-20261008 issue=#17 selected=GH-17-A candidate=20cca25f1c637bf7359aaeb030f90e6685f3c4de branch=experiment/gh17-scratch draft-PR=#18
Requested phase: serial one-worker builds, local Tier0 core-state/CSS/CNF/smoke/timeout checks and four baseline-only allocation diagnostic calls (120/135s limits). No comparative timings requested before correctness gates. Host slot NONE; primary Windows ownership respected, no local workloads executed. Baseline24572d6, three proposals/choice and durable source/support records in PR18. Python AST and exact diff review only, performance UNTESTED. Please assign a host window when primary resources release; no automatic start.
guluchen commentedon Oct 8, 2026
RELEASE: primary Windows H010 preparation/Tier0 completed; job limits/affinity/priority/sleep restored, no local primary solver/build running. H010 candidate467433133851f25a1ab76b662ca93250acf46d03, PR19; local Tier0 PASS, hosted pending, Tier1 not assigned.
RUN_ASSIGNMENT: runner=independent-brain-20261008, host=local Windows, issue17/GH17 candidate191de6849357574c830e14992a7afe9615dad320. Scope=serial -j1 builds,4096 production core-state comparisons + CSS/smoke/timeout Tier0 and exactly four <=120s baseline-only allocation diagnostic calls LP34/LP136 OFF/MTO. No Tier1 timings yet. Must wrap with existing one-CPU Windows Job affinity/capacity/priority telemetry, cleanup proof and active global spare>50%/<=half-spare guard; no unbounded descendant cleanup waits. Verify current preflight rather than assuming earlier idle sample. No other agent builds/trains/benchmarks on Windows until this runner releases. Root can prepare H010 benchmark package and inspect hosted evidence in parallel.
guluchen commentedon Oct 8, 2026
RUN_RELEASE agent=independent-brain-20261008 issue=#17 assignment=#15 (comment)
Windows phase complete; no GH17 build/test/solver/profile/timing process active. Local Tier0 PASS, hosted CI+cross-repo PASS on191de68-equivalent tree. Four baseline-only allocation diagnostics correct:328 observed allocations,319 predicted with reuse (9 saved counts, NOT a measured speedup). Raw disposition/audit in progress, no Tier1 run or acceptance.
Owned Job PID list verified only runner before release; job limits, affinity65535, Normal priority32 and sleep requirement restored successfully. Baseline/candidate timed workloads remain NONE. Primary host slot may proceed after scheduler records next assignment; GH17 does not retain Windows slot.
guluchen commentedon Oct 8, 2026
RUN_ASSIGNMENT — Windows: codex-primary-20261008 / GH-16 H010 PGO Tier1. Previous GH-17 owner released after complete cleanup at comment6062760241. Exclusive experiment runner on this host; no other team compilation/training/timed workload while assigned. Prerecorded four Tier1 cases, OFF/MTO, baseline/candidate3 each, serial AB/BA/AB (48 solves), immutable trained profiles and production binaries, 180s parent/195s watchdog. Pinned single CPU + AboveNormal owned Job, continuous2s aggregate spare>50% /<=half-spare guard, interference telemetry and bounded owned-process cleanup. Windows is diagnostic, no research-grade/controlled acceptance claim. Tier0 local+hosted ordinary/cross-repo PASS on production candidate467433133851f25a1ab76b662ca93250acf46d03; full artifact11558338471/hash matches and independently audited, newline provenance reconciled. No Tier2/3 from this assignment. GH-17 shows9/328 diagnostic allocation savings: low-priority formal performanceINCONCLUSIVE, no invented measured rejection; owner preparing fresh three-proposal round.
guluchen commentedon Oct 8, 2026
GH-16 Tier1 complete:48correct distances/objectives/all emittedbounds, frozenprofiles/binaries, no ownedworkers, allrestorationPASS. OFF/MTO mediangeomeans0.97994/0.97953, about2% positive direction; OFF envelope1.02082/no-worsefalse (BB108+0.05%) leaves numericINCONCLUSIVE. MTO envelope0.99866/allnonworse positive but notcontrolledproof. No nonoverlappingregression.85checks,24contentionalerts incl3active; minspare65.883%, minsibling85.938%. FormalINCONCLUSIVE/NOTADOPTED. Server read-only now44.62/44.98/44.96%idle, CPU102full => no remotejobs.
RUN_ASSIGNMENT — Windows remains codex-primary-20261008/GH-16 for ONE user-authorized exploratory LP340 Tier2: standing user instruction toadvanceoneTierifcannotyetreject. Prerecorded TIER2_PROPOSAL.md in experiment/gh16-pgo. Same untouched467433 productionconcept/binary/profile, OFF/MTO3pairs AB/BA/AB12solves,600/615s,1CPU/AboveNormal/continuouscapacityguard. This is notTier1PASS and authorizesnoTier3. No other team heavyWindowswork untilrelease. Expected~15min; worst123min budget.
guluchen commentedon Oct 8, 2026
REGISTER agent=review-brain-20261008 issue=#20 selected=GH-20-A
baseline=24572d6d09cce9a4a5faa58300a89e0feba9da6a
mechanism=skip only identity suffix copies (i==j) at two propagateForLK conflict-tail loops; retain original compaction copying otherwise
branch=planned experiment/gh20-watch-tail status=PROPOSED / UNTESTED host-slot=NONE
Three proposals recorded: A selected self-copy skip; B symmetric VSIDS lookahead binary-conflict activity; C disclosed re-ranked GH17-B demand watch cleanup. All code-derived engineering proposals, no invented paper/BibTeX.
Read prior results and active registrations; independent of PGO/GH16 and scratch/GH17. No workload/build/test launched; current Windows PGO assignment6062796854 respected. Next isolated prerecord/static correctness audit; request host assignment before significant compute.
guluchen commentedon Oct 8, 2026
LEARN GH-17 / independent-brain-20261008: Tier0 local+hostedPASS; allocation scope SHELVED/LOW PRIORITY/NOT ADOPTED, formal performanceINCONCLUSIVE. Four correct diagnostic calls yield328 observed allocations vs319 predicted reuse (9saved,2.74%, max8bytes). This is small NONZERO opportunity; no stopwatch conclusion and no zero-mechanism rejection. Most populated uses are in different callers, so narrow safe lifetime captures little reuse on these cases.
Production tested191de68, durable records7a28e71, draftPR18 unmerged.201 raw files + exact source/support/binary/input/manifest/resource/cleanup evidence retained and independently audited. Attempt01 harness compile failure and corrected attempt02 both preserved. No Tier1/2/3, no other source changes/combination. Host released6062760241, settings/ownedcleanupPASS.
Result https://github.com/guluchen/DistQLDPC/blob/7a28e71b9dee1643fd073ff10d6c094bfb1bcaf5/optimization/experiments/GH-17/RESULT.md . Independent agent proceeds fresh3proposals/select1 from shared learning, research-only until new RUN_ASSIGNMENT.
guluchen commentedon Oct 8, 2026
REGISTER agent=independent-brain-20261008-round2 issue=#21 selected=GH-21-A
baseline=24572d6d09cce9a4a5faa58300a89e0feba9da6a status=PROPOSED / UNTESTED host-slot=NONE
Exactly three independently ranked proposals: A selected GCC O2-only instead of O3; B -march=native-only CPU ISA specialization; C disclosed re-ranked unselected H012 fixed-cap2 further lookahead, CP2026 exact primary PDF/sections/Proposition6 and BibTeX retained. A is exactly one Makefile token; all src and other flags original. No PGO/LTO/native/solver-source bundle. No demonstrated cache hotspot or claimed speedup; code-generation tradeoff will be tested. Distinct from issue16 PGO and issue20 watcher-tail identity copy. Root prospective VSIDS/Clang/prefetch not duplicated.
Prior GH17 tested191 Tier0PASS and9/328 predicted allocation saves, formalperformanceINCONCLUSIVE/lowprioritySHELVED/NOTADOPTED; record7a28 preserved. New proposal saved independent-brain-records/gh-21/PROPOSAL.md plus references.bib, isolated baseline worktree ownership acknowledgement pending. No local build/solver/profile/timing started; Windows remains assigned to primary LP3406062940581. Await fresh host assignment after actual-default-build Tier0 package preparation.
guluchen commentedon Oct 8, 2026
REGISTER — codex-primary-next-20261008 / GH-22 #22 . Fresh3: Aselected symmetriclookaheadbinaryVSIDSactivity (one secondindex0→1 in lookbackResetTrail; notbugclaim), BunselectedcompilerbackendonlyClangO3, CunselecteddisclosedCP2026cap2FLA withsource/Bib. A disclosed re-rank of GH20 UNSELECTEDB; searchfoundnoactiveselectedduplicate. Sourcebaseline24572, ownbranch/worktreeforthcoming; noPGO/LTO/scratch/watchcopybundling, nohostslot/build/benchmark forGH22. PGO GH16 stillcompletes its boundedexploratoryLP340 under6062940581; no prematurePGOrejection/acceptance. Read/rereadclaims afterregistration; lowerissueownsoriginalduplicates.
guluchen commentedon Oct 8, 2026
GH-20 selected A source/support ready for independent review: candidate3fe5afead91cf0527cd39529a6d48b4e19e12041, branch experiment/gh20-watch-tail, draftPR23 #23; prerecordd9468a5. Narrow two-path identity-tail skip, originalcompaction unchanged.120 differential production scenarios prepared; finalbaseline source/support diffcheckPASS. UNTESTED / NOT ADOPTED; no localbuild/test/diagnostic/timing, hostslotNONE. Current PGOTier2assignment respected. HostedshortcorrectnessCI canrun; localCPU only after scheduler grants pinned candidate scope. UnselectedB now separately registered by primary GH22, no overlap with selectedA.
291 remaining items
guluchen commentedon Oct 29, 2026
Claiming #207 on codex/bch-library: five fixed nonprimitive binary CSS BCH inputs (one exact5 control, four theorem-lower-only targets), generally dense CSS, not qLDPC. Independent finite-field/root-parity/dual-polynomial/logical checks before bounded Linux smokes. No source-dependent GH200/GH202 diagnosis or solver changes.
guluchen commentedon Oct 30, 2026
Claiming the next missing mainstream CSS construction in GH-208: prime binary quadratic-residue CSS ideals, one exact23-qubit Golay control and four fixed p431/719/1031/2039 distance targets, original math only with independent physical polynomial/correlation lower certificates. Fresh issue/branch inventory shows no competing QR topic. No solver changes, source-hold resumption, server allocation or main integration.
guluchen commentedon Oct 30, 2026
Claiming GH-209: original reconstruction of the polynomial-minor2x3 cyclic CSS prescription in2610.19459v1. All13 published examples have known exact distances. Frozen batch uses source27/255 controls plus original unscaled-polynomial lifts n765/1275/1785/2805 with no inherited distance claim. Fresh issue/branch review shows no competing topic. Independent physical convolution/Smith/GF2/logical/witness/equivalence checks and bounded Linux gates; no solver changes or held-source resumption.
guluchen commentedon Oct 30, 2026
#206 done: PR #215 (
-cc-roworder=auto, stacked on #204). #183 lower-bound cross-check: BB_756 >= 32, BB_864 >= 32, TN_496 >= 24 REPRODUCED by relabeled seeds 1-3 (9/9 runs). Awaiting PI decisions; nothing merged.guluchen commentedon Oct 30, 2026
Merge summary 2026-10-31 (PI-approved order: #161 → #180 → #204 + #215 → #203)
All four PRs were merged as opt-in. No CC default was changed. The CC default rule set is still
excl,pack,orbf,parity,leaf,overlap,charge(#161, GH-157), and-cc-roworderstill defaults toindex. Main's stem renames from #216 were merged into each branch before it was merged.charge(default)tiebreak-cc-roworder=bfs,-cc-tbbase-cc-roworder=auto,-cc-probe,-cc-probe-growthsparse,sparseov,sparsemrv,xorunitMutant IDs. GH-181's mutants 19-21 were renumbered to 22-24, because 19/20 belong to GH-183 and 21 to GH-206. With GH-157's 15 and GH-162's 17/18, every ID from 1 to 24 is unique except 16, which is still reserved and rejected. Every mutant is caught.
Per-merge gates. Each PR was checked on yfclab2, on cores 2-23 only, with a 4 GB cap per process:
make test-ccandmake test-cc-flagspass.-vlogs are byte-identical to main. Only the time-sliced ub-search finder lines differ.The conflict details are in the comments on #162, #183, #206 and #181.
Tier 5 rule check (from the existing Tier 5 records only; no new runs). The rule: no code that main already solved within the Tier 5 limit may become more than 1.2x slower. Each opt-in configuration below is listed against main's time to the same answer.
excl,pack,orbf,parity,leaf,overlap,tiebreak(GH-162/S1/tier5_table.md, main 346d1c6, same session)mrv+-cc-roworder=bfs(GH-183/S1/tier5_table.md)-cc-roworder=auto(GH-206/S3_tier5_final/,S2_tier5_growth30/lp_ref_core34.txt)...,overlap,sparse,sparseov,sparsemrv(GH-181/T5/tier5_table.md)sparse/sparseovadd rows. On every other bundled code the search is the pre-GH-181 instantiation, with node counts identical to main.guluchen commentedon Nov 3, 2026
New round #218: gate
-stab-overlap=autoto remove the MaxSAT TN_216 regression from #148 (1.39-1.53x on 5-seed medians) while keeping the BB/LP gains. yfclab2 cores 112-119.guluchen commentedon Nov 4, 2026
GH-217 (#217) round result: PR #220, candidate A (
tiebreak,sparse,sparseov,sparsemrvadded to the default rules,-cc-roworder=autoas the default). The PR is open and not merged: the Tier 1 start-up floor needs the PI's decision.make test-ccandmake test-cc-flags(551 checks) pass.-seed=1/-seed=2) are running before any rename.Evidence:
optimization/experiments/GH-217/on the PR branch.guluchen commentedon Nov 4, 2026
#218 / PR #222 (not merged, PI decision). The new rule removes the MaxSAT TN_216 regression from GH-148: TN_216's search becomes identical to 12b3e05's, and the BB/LP gains are untouched. The cost is TN_180 card-mto at 1.57x of main (Tier 5 1.2x rule fails). See the PR for the trade-off.
guluchen commentedon Nov 4, 2026
GH-217 (#217) update (2026-11-05). PR #220 is still open and not merged; it waits for the PI.
Merged main 972b28c (erasure opt-in, re-tier) and fecee8c into the branch.
make test-cc: PASS;make test-cc-flags: 572/572;New tier layout, 5 seeds, concurrent (A geomean / worst cell):
Tier 1 (quiet interleaved): A geomean 0.898; LP_442 alone is 1.467.
usleep(10000)): runs land at about 23 ms or about 33 ms.Tier 5:
TN stem lbs not reached in 6 h (coordinator question):
-cc-lb-auto=0) does not recover them: TN_648_10 and TN_648_14 both stay at lb 21 (lb times within 3 %); TN_496 becomes 1.35x slower.Renames merged: DistQLDPC #223 (fecee8c) and QDistSAT #17 (7ea1aa96):
Each was reached by both main's and the candidate's CC default and reproduced with a relabelled run (same engine).
guluchen commentedon Nov 4, 2026
New round: #225 — should the GH-195 erasure bound (opt-in since PR #219) join the CC default rule set? Stacked on #220 (GH-217 candidate A); comparison A + erasure vs A. Not to be merged before #220.
guluchen commentedon Nov 4, 2026
GH-224 (#224, PR #226): merged as 82ca41d. The parent now waits for the solver child in
poll()on a SIGCHLD self-pipe instead ofusleep(10000), which removes the 10 ms wall-time quantization of fast runs. The solver child, the deadline/SIGKILL path, the memory cap and the output are unchanged.Interleaved old vs new on yfclab2, 5 seeds x 9 repetitions:
-no-cardgeomeanguluchen commentedon Nov 5, 2026
#225 (erasure as a CC default) result: NO-GO with the current gate.
guluchen commentedon Nov 5, 2026
GH-227 (#227, PR #228), merged as 755e0c2: cost-aware erasure gate;
erasurejoins the CC default.A timed-sample throttle per (remaining budget, extra) class decides whether the GH-195 erasure test runs. The bound itself is unchanged.
On the Mac, COLOR_2791 runs at 0.80x per level against main; ungated erasure was 3.6-4x slower. The open-code Tier 5 runs are still going (info only; any lb is PLAUSIBLE). Server CPUs 96-127.
guluchen commentedon Nov 5, 2026
Lower-bound reproduction for GH-225 / GH-227 (2026-11-06)
Seven tier5 stems were renamed in DistQLDPC #230 (merge a79d7c8) and QDistSAT #18 (merge c5eef912). Each lb was reached by at least two CC runs with different search trees (12 h relabelled or reordered runs on main 1239e9a, yfclab2 CPUs 64-95). This is the same engine family, not an independent method.
Still PLAUSIBLE (single tree): COLOR_1027 lb 32 and COLOR_2791 lb 29. Two 12 h runs on main 755e0c2 are checking COLOR_2791 lb 29 (yfclab2 CPUs 65-66).
Records:
optimization/experiments/GH-225/lb-repro/.guluchen commentedon Nov 8, 2026
GH-225 follow-up complete (24-36 h runs, yfclab2 CPUs 64-95). DistQLDPC #232 and QDistSAT #19 now rename 19 tier5 stems; both are open and not merged, because QDistSAT's
test (3.9)job is red (ubuntu-latestis now Ubuntu 26.04, which has no Python 3.9).Pure-Python re-checks are in
optimization/experiments/GH-225/lb-push/: last-level EMPTY in all 71 runs, odd-level parity of the BB codes, and the XZ-dual maps of all X-half-only codes (including TN_496). This is the same engine family, not an independent method; both arms use the erasure rule.