Li Benchmarks

wave_equation_2d greenvalidity pass

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

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: 1.029 (102.9% of rust speed) (table SOTA: li — Li leads; charts use rust = 1.0)
Best competitor value: 0.1977 s

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 (family wave_equation_2d)
Category: physics
Pillar: physics
Package: lic
Li / catalog oracle (mean ± σ): 0.1977 ± 0.009918 s (n=20) / 0.2117 ± 0.018503 s (n=20) (cpp)
Ratio vs catalog oracle: 0.9339×
Best competitor: li (0.1977 s)
Li relative speed vs SOTA: 1.029 (1.0 = rust speed)
Validity: validity pass
Threshold: 1.2×
Source: lic/benchmarks/workloads/tier2_physics/wave_equation_2d

PH ids: PH-5b

Compare oracle: cpp

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

Language comparison
Lang	Mean ± σ	Runs	Unit	Variant	OS
li	0.1977 ± 0.009918	20	s	release	linux
cpp	0.2117 ± 0.018503	20	s	release	linux
rust	0.2035 ± 0.010671	20	s	release	linux
julia	0.2056 ± 0.017187	20	s	release	linux
Metric: wall_time (value = mean of timed runs)