AMR scaling: comm/memory-scalable regrid + restart-IO, batched flux-capture, multi-level restart - #7

Merged

sbryngelson merged 23 commits into

Jul 16, 2026

Commits on Jul 14, 2026

amr(perf): hoist fine-fine seam pack buffers to persistent module scratch (remove per-seam malloc in s_amr_fine_fine_halo; byte-identical)
sbryngelson
committed
54810d6
amr(perf): vectorize AMR restart-I/O metadata collectives (one EXSCAN/ALLREDUCE/ALLGATHER over all blocks, not per-block; file layout byte-identical)
sbryngelson
committed
52f4bb2
amr(perf): sparse tagged-index allgatherv for regrid clustering (gtag+gctag)
sbryngelson
committed
76f55c7
amr(perf): batch AMR flux-capture kernels over the slot dimension (O(blocks) launches -> O(1) per category; byte-identical)
sbryngelson
committed
15baa8a
amr(gpu): fix seam-halo device kernel PRESENT error on nvfortran/Cray (fm host array referenced in GPU_PARALLEL_LOOP bounds)
sbryngelson
committed
a9831a4
Merge remote-tracking branch 'origin/up/mega' into amr-scaling
sbryngelson
committed
6d62fe1
amr(perf): sparse Berger-Rigoutsos clustering — drop the O(global-grid) dense tag field (per-rank memory now O(#tagged), byte-identical boxes)
sbryngelson
committed
6703e30
amr(perf): 64-bit sparse tag linear index — fix int32 overflow above ~1290^3 (2048^3+ target)
sbryngelson
committed
baf8c4c

Commits on Jul 15, 2026

Commits on Jul 16, 2026