Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

crates/thermorust/benches/motif_bench.rs

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+//! Criterion microbenchmarks for thermorust motifs.
+
+use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion};
+use rand::SeedableRng;
+use thermorust::{
+    dynamics::{anneal_continuous, anneal_discrete, step_discrete, Params},
+    energy::{Couplings, EnergyModel, Ising},
+    motifs::{IsingMotif, SoftSpinMotif},
+    State,
+};
+
+fn bench_discrete_step(c: &mut Criterion) {
+    let mut group = c.benchmark_group("step_discrete");
+    for n in [8, 16, 32] {
+        group.bench_with_input(BenchmarkId::from_parameter(n), &n, |b, &n| {
+            let model = Ising::new(Couplings::ferromagnetic_ring(n, 0.2));
+            let p = Params::default_n(n);
+            let mut s = State::ones(n);
+            let mut rng = rand::rngs::SmallRng::seed_from_u64(1);
+            b.iter(|| {
+                step_discrete(
+                    black_box(&model),
+                    black_box(&mut s),
+                    black_box(&p),
+                    &mut rng,
+                );
+            });
+        });
+    }
+    group.finish();
+}
+
+fn bench_10k_steps(c: &mut Criterion) {
+    let mut group = c.benchmark_group("10k_steps");
+    for n in [16, 32] {
+        group.bench_with_input(BenchmarkId::from_parameter(n), &n, |b, &n| {
+            b.iter(|| {
+                let mut motif = IsingMotif::ring(n, 0.2);
+                let p = Params::default_n(n);
+                let mut rng = rand::rngs::SmallRng::seed_from_u64(123);
+                let trace = anneal_discrete(
+                    black_box(&motif.model),
+                    black_box(&mut motif.state),
+                    black_box(&p),
+                    black_box(10_000),
+                    0,
+                    &mut rng,
+                );
+                black_box(motif.state.dissipated_j)
+            });
+        });
+    }
+    group.finish();
+}
+
+fn bench_langevin_10k(c: &mut Criterion) {
+    let mut group = c.benchmark_group("langevin_10k");
+    for n in [8, 16] {
+        group.bench_with_input(BenchmarkId::from_parameter(n), &n, |b, &n| {
+            b.iter(|| {
+                let mut motif = SoftSpinMotif::random(n, 1.0, 0.5, 42);
+                let p = Params::default_n(n);
+                let mut rng = rand::rngs::SmallRng::seed_from_u64(77);
+                anneal_continuous(
+                    black_box(&motif.model),
+                    black_box(&mut motif.state),
+                    black_box(&p),
+                    black_box(10_000),
+                    0,
+                    &mut rng,
+                );
+                black_box(motif.state.dissipated_j)
+            });
+        });
+    }
+    group.finish();
+}
+
+fn bench_energy_evaluation(c: &mut Criterion) {
+    let mut group = c.benchmark_group("energy_eval");
+    for n in [8, 16, 32] {
+        let model = Ising::new(Couplings::ferromagnetic_ring(n, 0.2));
+        let s = State::ones(n);
+        group.bench_with_input(BenchmarkId::from_parameter(n), &n, |b, _| {
+            b.iter(|| black_box(model.energy(black_box(&s))));
+        });
+    }
+    group.finish();
+}
+
+criterion_group!(
+    benches,
+    bench_discrete_step,
+    bench_10k_steps,
+    bench_langevin_10k,
+    bench_energy_evaluation,
+);
+criterion_main!(benches);