Restores the PeriodicBlockStepper safeguard dropped in 8e1feff, for all
FixedPatchStepper levels: both G buffers, halo pairs and boundary columns
of every level are compared with cuda.mem_get_info() before the stream,
any module or any buffer exists, raising MemoryError('level buffers exceed
free device memory'). Transfer tables are not counted (lower bound).
Tests: the single-level MemoryError case is back beside the param-layout
check (no stream, no allocation); host test_single_level covers depth 1
and depth 2 (no stream, build or allocation) and the wait failure after a
good step (count stays 1). Driver-mocking fixtures report ample free memory.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The package already exposed it as CelerisLab.cuda.compiler; the module now
has that name and every tip caller, doc and current-tree test imports it
directly (no alias).
Historical-revision tooling is not edited: the Taylor-Green harness
(run_case.py, hash-pinned check_projected_pairs.py, assess receipts) only
runs against a135252, whose package has cuda/compiler_v2.py, and the J
campaign runners and dated docs describe past trees. Its two current-tree
tests now import that package from git (historical_package) instead of the
tip, and the kernel-root test first checks the accepted case.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Dense root + blocked fine level is level_blocks=[None, block]; bodies go
to level_objects[1]. Both before-CUDA rejections (non-dividing and
malformed fine block) keep their inputs. Assertions unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The blocked actuated path called the helper with an unvalidated fine
config (nq=0), so receiver*nq+dir collapsed distinct writers and the
unique-writer guard fired. Validate after wall-aware sanitization, as the
dense path does before assign_surface; the test's fine_cfg helper too.
Unique-writer guard unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Asserts 21 aperture links, all with nonzero velocity, and 3 halo-writer
plus 2 halo-donor aperture rows in each decomposed layout (actuation
coverage across seams, not only geometric cut-link coverage). Velocity
is given in coarse units; prepare_fine_boundary scales it once. The GPU
gate remains storage equivalence; no zero-mass-change claim.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- curved_links.surface_link_velocity: pure host helper extracted from
CurvedLinkSoA.assign_surface (which now calls it; dense path unchanged).
Rows follow physical cut-link order.
- blocks.cu BlockCurvedBoundary: one nullable trailing surface_velocity
argument (2 floats/link), same convention as CurvedBoundaryKernel; no
exchange output. Both call sites pass it explicitly (PeriodicBlockStepper
passes null; single-level behaviour unchanged).
- FixedPatchStepper blocked mode accepts actuated stationary circles,
validated against the physical fine_cfg; uploads the velocity table only
when any actuation spec exists and fails before BFL if that buffer is
missing (even at zero amplitude). Blocked exchange diagnostics are
unavailable; dense exchange behaviour unchanged. No force aggregation,
no motion, no new numerical formula.
Tests: 1x1 seam (0,0), receivers in 4 blocks, all q<.5 links fallback 0;
dense SoA never built in blocked mode; launch order incl. null vs velocity
pointer; missing-buffer guard at 0 and 0.002; helper == assign_surface;
aperture crosses a seam; GPU: periodic and slot_reservoir, +/-0.002,
8 coarse steps, dense vs 1x1/2x2/4x2 exact values + NaN masks.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
FixedPatchStepper(fine_block=..., fine_objects=[circle]) now accepts
passive stationary circles; any surface actuation is rejected before CUDA
(dense fine path unchanged). prepare_fine_boundary still decides legality
on the dense fine grid; its SoA is mapped by the new array-based storage
adapter blocks.blocked_link_tables (map_cut_links: unique receiver owner
and local writer, row order kept; blocked flags sized nblocks*L), which
PeriodicBlockStepper._static_circles now also uses (single-level legality
builder unchanged). Per fine hop on the same buffer: halo -> existing
BlockCurvedBoundary -> BlockStep(flags, kind). No CUDA changes.
Tests: fixture 76 links / 68 q<.5 and 8 seam writes + 8 seam donors per
decomposed layout (both modes); adapter flags sizing; mocked launch-order
contract; GPU: periodic and slot_reservoir, 8 coarse steps, dense fine
body vs 1x1/2x2/4x2 fine blocks, exact values + NaN masks on masked
downloads and raw final arrays, ACTIVE fluid finite, solid/OUTER NaN.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- GPU test: after hop 2 some INNER_GHOST populations are NaN (pulled from
OUTER poisoned on hop 1; 236 slots in pinned CPUREF); assert ACTIVE
finite and OUTER NaN, keep the full dense-vs-blocked raw value/NaN-mask
comparison.
- A 1x1 non-periodic fine layout has zero halo pairs: skip the halo table
uploads (CUDA rejects mem_alloc(0)); _fine_halo already skips launch.
CPU guard test with driver doubles.
- Drop the class-level fine_layout default; the followup fake backend now
sets fine_layout = None explicitly.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
fine_block=(by, bx) partitions the ENTIRE fine_shape (incl. the four-cell
patch ghost band) with a non-periodic one-cell-halo BlockLayout2D; body-
free only (fine_objects rejected in blocked mode; dense fine-body and
actuation path unchanged). Per coarse step on the same stream:
BlockExplode into ghost owner cores -> gather -> BlockStep(kind) ->
gather -> BlockStep(kind) -> unchanged PatchCoarseStep reading remapped
owner-core child slots in the original row/child order. Public arrays
keep the dense fine shape; only the private allocation is blocked.
blocks.cu: explicit BlockExplode; BlockStep gains nullable kind
(OUTER skip pull + NaN, INNER pull only, ACTIVE pull + SRT).
PeriodicBlockStepper passes an explicit null kind (raw launch ABI).
refinement.cu/refinement.py and coarse numerics unchanged.
Tests: CPU rejections and table remap (dense (q,cell) and child order
preserved, owner cores, kinds); GPU gate: periodic and slot_reservoir,
8 coarse steps, dense vs 1x1/2x2/4x2 fine blocks bit-identical in
masked downloads and raw coarse/unpacked fine incl. ghost NaN masks.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
