87 lines
2.7 KiB
Rust
87 lines
2.7 KiB
Rust
use criterion::{black_box, criterion_group, criterion_main, Criterion};
|
|
use sbp::euler::System;
|
|
use sbp::operators::{SbpOperator2d, Upwind4, UpwindOperator2d, SBP4};
|
|
use sbp::Float;
|
|
|
|
fn advance_system<SBP: SbpOperator2d>(universe: &mut System<SBP>, n: usize) {
|
|
for _ in 0..n {
|
|
universe.advance(1.0 / 40.0 * 0.2);
|
|
}
|
|
}
|
|
|
|
fn advance_system_upwind<UO: UpwindOperator2d>(universe: &mut System<UO>, n: usize) {
|
|
for _ in 0..n {
|
|
universe.advance_upwind(1.0 / 40.0 * 0.2);
|
|
}
|
|
}
|
|
|
|
fn advance_embedded<UO: UpwindOperator2d>(universe: &mut System<UO>, embedded: bool) {
|
|
let dt = 0.2 / std::cmp::max(universe.nx(), universe.ny()) as Float;
|
|
let t = 1.0;
|
|
if embedded {
|
|
let mut dt = dt;
|
|
universe.advance_adaptive(t, &mut dt, 1e-2);
|
|
} else {
|
|
for _ in 0..(t / dt).round() as isize {
|
|
universe.advance_upwind(dt);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn performance_benchmark(c: &mut Criterion) {
|
|
let mut group = c.benchmark_group("EulerSystem");
|
|
group.sample_size(25);
|
|
|
|
let w = 40;
|
|
let h = 26;
|
|
let x = ndarray::Array1::linspace(-10.0, 10.0, w);
|
|
let x = x.broadcast((h, w)).unwrap();
|
|
let y = ndarray::Array1::linspace(-10.0, 10.0, h);
|
|
let y = y.broadcast((w, h)).unwrap().reversed_axes();
|
|
|
|
let mut universe = System::new(x.into_owned(), y.into_owned(), Upwind4);
|
|
group.bench_function("advance", |b| {
|
|
b.iter(|| {
|
|
universe.init_with_vortex(0.0, 0.0);
|
|
advance_system(&mut universe, black_box(20))
|
|
})
|
|
});
|
|
|
|
let mut universe = System::new(x.into_owned(), y.into_owned(), Upwind4);
|
|
group.bench_function("advance_upwind", |b| {
|
|
b.iter(|| {
|
|
universe.init_with_vortex(0.0, 0.0);
|
|
advance_system_upwind(&mut universe, black_box(20))
|
|
})
|
|
});
|
|
|
|
let mut universe = System::new(x.into_owned(), y.into_owned(), SBP4);
|
|
group.bench_function("advance_trad4", |b| {
|
|
b.iter(|| {
|
|
universe.init_with_vortex(0.0, 0.0);
|
|
advance_system(&mut universe, black_box(20))
|
|
})
|
|
});
|
|
group.finish();
|
|
|
|
let mut group = c.benchmark_group("adaptive integration");
|
|
group.sample_size(10);
|
|
let mut universe = System::new(x.into_owned(), y.into_owned(), Upwind4);
|
|
group.bench_function("static dt", |b| {
|
|
b.iter(|| {
|
|
universe.init_with_vortex(0.0, 0.0);
|
|
advance_embedded(&mut universe, false);
|
|
})
|
|
});
|
|
group.bench_function("adaptive dt", |b| {
|
|
b.iter(|| {
|
|
universe.init_with_vortex(0.0, 0.0);
|
|
advance_embedded(&mut universe, true);
|
|
})
|
|
});
|
|
group.finish();
|
|
}
|
|
|
|
criterion_group!(benches, performance_benchmark);
|
|
criterion_main!(benches);
|