amr: block-structured multi-level AMR (Body 2) — recursive nesting, subcycling, np≥2 - #6

Merged

sbryngelson merged 41 commits into

Jul 13, 2026

Commits on Jul 12, 2026

amr: amr_max_level param + multi-level design roadmap (increment 1, gated) - Foundation for multi-level AMR nesting (arbitrary refinement depth L0..L_amr_max_level). Add the amr_max_level namelist …
sbryngelson
committed
9f939fa
amr: per-block level data model (multi-level increment 2a) - Add amr_block_level(:) (refinement level of each active block, 1..amr_max_level) + amr_num_levels to the replicated block metadata in m_…
sbryngelson
committed
9dfe80d
amr: parent-block finder + coarse-frame design (multi-level 2b start) - Add f_amr_parent_block(k): the covering level-(level(k)-1) block that block k refines - its coarse parent - or 0 when block k…
sbryngelson
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5364d5f
amr: level-aware L1->L2 coupling conserves exactly (multi-level 2b milestone) - Implement the level-aware coarse frame so a level>=2 block's coarse side is its PARENT block's fine cells. s_set_amr_…
sbryngelson
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05d10c0
docs(amr): increment 3 plan - lock-step advance first, then subcycle - After the 2b L1->L2 coupling milestone (conservation err = 0.0 on CPU AND GPU/V100), record the increment-3 plan: build the co…
sbryngelson
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f79d8fb
amr: restrict-to-parent - fold level-2 fine back into the parent (increment 3 step 1) - s_restrict_fine_to_coarse gains a level>=2 branch: instead of folding into the L0 coarse_tgt, s_amr_restrict_…
sbryngelson
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d857d21
amr: reflux-to-parent - Berger-Colella C/F flux correction into the parent (increment 3 step 2)
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0930008
amr: persistent level-2 block (increment 3 step 3)
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1d6fdb2
amr: level-loop driver conserves on GPU - fix persistent-L2 device NaN (increment 3 step 4)
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b3f3d39
amr: dynamic per-level regrid + L2->L1 reflux conserve to machine zero (np=1, 2 levels)
sbryngelson
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4fdebe0
amr: enable viscous/chemistry multi-level - total-flux L2->L1 reflux (np=1)
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df99912
amr: generalize multi-level nesting to >2 levels (np=1)
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4a0c947
test(amr): add np=1 amr_max_level=2 multi-level golden (static 2-level block)
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f72253a
amr: sensor-on-fine child tagging for multi-level regrid (np=1)
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cf8255d
test(amr): add np=1 dynamic multi-level golden (sensor-on-fine child tagging)
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7c3f930
amr(#26 inc.1): extract recursive s_amr_advance_subtree - behavior-preserving refactor
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d6ccc93
amr(#26 inc.2): recursive multi-level subcycling - each level at its own dt
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12c61be
amr(#26): fix pslot/amr_cur arg-aliasing breaking multi-level subcycle conservation
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90a4df7
amr(#27 inc.1): static multi-level runs at np>=2 (co-located refinement towers)
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08c5b8f
amr(#27 inc.2): dynamic multi-level at np>=2 (distributed nesting + co-located owners)
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ee0864b
amr(#27 inc.2): gate multi-level np>1 to validated 1D (2D/3D fine-block migration segfaults; use n>0 not num_dims which is unset at checker time)
sbryngelson
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6642c77
amr(#27 inc.3): 2D/3D multi-level at np>=2 (fix parent-gather arg + fine-fine halo buffer sizing on non-owner ranks)
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4dea454
amr(#28): document root cause of subcycle+dynamic+np>1 leak (missing per-substep fine-fine seam halo, not reflux/regrid ordering)
sbryngelson
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963947e
amr(#28): single-level subcycle conserves at np>1 (transpose subcycle driver for per-substep fine-fine seam halo)
sbryngelson
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887eb98
amr(#35): multi-level L2-L2 seam conserves in lock-step (level-aware fine-fine halo extent + reflux seam-face exclusion + enable L2 tiling)
sbryngelson
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b4a1f53
amr: guard two review-found multi-level edge cases (tile-size div-by-zero + static under-refine)
sbryngelson
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1f035d7
amr: two review perf cleanups in the fine-fine halo and reflux-to-parent
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86536cc
amr: strip development self-test scaffolding from static multi-level construction
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decbb1f
amr: unify the L0/L1 and L2->L1 Berger-Colella reflux into one kernel
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08409a5
amr: unify the coarse-self and child creg boundary-flux capture
sbryngelson
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99ff235

Commits on Jul 13, 2026