feat: PYAUTO_SMALL_DATASETS + canonical auto-sim for the cluster scripts#250
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…er scripts
cluster/{modeling,start_here}.py: manual three-file existence guards ->
al.util.dataset.should_simulate (imaging convention; carries small-mode
delete-and-regenerate). lenstool/data.py: 96 MB mosaic/cutout leg skipped
under PYAUTO_SMALL_DATASETS=1 (visualization-only product). lenstool/
modeling.py: the 72-param refit runs only under LENSTOOL_EXAMPLE_RUN_FIT=1,
never PYAUTO_TEST_MODE (sweep env put the factor-graph search into reduced-
iterations mode -> 600s+ hang; structural pass always runs). Evidence under
the exact sweep env, fresh regen: start_here 24s, modeling 26s, lenstool
data 2s, lenstool modeling 175s (0.068" parity intact).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PUuWXiS23FvmfQPLvMNjeM
This was referenced Jul 9, 2026
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docs: Lenstool example on the canonical CSV API end to end (stacked on #250)
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Summary
PYAUTO_SMALL_DATASETS + canonical auto-simulation for the cluster path (issue #249; the final filed item of the cluster home straight). The diagnosis was good news: the libraries' small-mode hooks (PointSolver fixed-pair short-circuit, 15×15 grid caps) already make the cluster scripts fast — the historical "test mode breaks it" parking simply predates them, and nothing ever wired the scripts in.
scripts/cluster/{modeling,start_here}.py— hand-rolled three-file existence checks replaced by the canonicalal.util.dataset.should_simulateguard (matching imaging, and the weak twin shipping via PyAutoLens#581), which also carries small-mode's delete-and-regenerate semantic so smoke datasets actually get built small.scripts/cluster/lenstool/data.py— the 96 MB RELICS mosaic download/cutout (a visualization-only product) is skipped underPYAUTO_SMALL_DATASETS=1; the Mahler model files (~85 KB) still download so the modeling products are complete.scripts/cluster/lenstool/modeling.py— the production-scale refit now runs only under its explicitLENSTOOL_EXAMPLE_RUN_FIT=1opt-in, neverPYAUTO_TEST_MODE(the sweep env put the 72-parameter factor-graph search into reduced-iterations mode — a 600 s+ hang; the structural pass is the model composition +model.info, which always runs).Evidence (fresh dataset regeneration, exact sweep env from
config/build/env_vars.yamldefaults)cluster/start_here.pycluster/modeling.pycluster/lenstool/data.pycluster/lenstool/modeling.pyCompanion PyAutoBuild PR removes the two
no_run.yamlcluster lines — the task's success criterion.Scripts Changed
scripts/cluster/modeling.py,scripts/cluster/start_here.py,scripts/cluster/lenstool/data.py,scripts/cluster/lenstool/modeling.py(+ navigator catalogue regen).Merge coordination
Three open branches touch the navigator catalogue (this, point-pairing-policies #248, and the weak thread) — whichever merges last regenerates
llms-full.txt/workspace_index.jsonon main (two commands, noted in all three).Validation checklist (--auto run — in-session directives)
🤖 Generated with Claude Code