advection_diffusion_2d greenvalidity pass

Tier 2 · wall_time · tier2 default grid · variant shared_c_kernel · OS linux

Validity gate

passpass — perf claims allowed when ratio is green

Source: latest.csv:perf_present

Wall-clock row exists only — no explicit correctness signal yet.

Ratio vs best competitor
0.923 (92.3% of cpp speed) (best in series: cpp — Li is never labeled best)
Best competitor value
0.6 s

Numeric oracle

No analytical verify rows in ingest yet. Run tier-1 with --verify so latest.csv exports verify_ulps / verify_within_1ulp.

Problem size
tier2 default grid
Category
physics
Pillar
physics
Package
lic
Li / catalog oracle (mean ± σ)
0.65 s / 0.6 s (cpp)
Ratio vs catalog oracle
1.0833×
Best competitor
cpp (0.6 s)
Li relative speed vs SOTA
0.923 (1.0 = cpp speed)
Validity
validity pass
Threshold
1.2×
Source
lic/benchmarks/tier2_physics/advection_diffusion_2d

PH ids: PH-5b

Performance vs best competitor

Compare oracle: cpp

Relative speed vs best competitor (cpp) — SOTA = 1.0, higher is better. Absolute s values are in the table below.

Absolute measurements

Language comparison
LangMean ± σRunsUnitVariantOS
li0.65sreleaselinux
cpp0.6sreleaselinux
Metric: wall_time (value = mean of timed runs)

Host OS

Measurement hosts by language
ScopeOS
Row aggregatelinux
li (release)linux
cpp (release)linux

Latest history deltas

  • ratio_vs_cpp: 1.1109 → 1.0833 (Δ -0.0276) · improved

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