gntag/benches/benchmark.rs

use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion, Throughput};
use gntag::agent::{Agent, SimpleAgent};
use gntag::world::ActualWorld;

fn get_world(width: isize, spacing: usize, validate: bool) -> ActualWorld {
  let mut agents = vec![];
  for x in (0..width).step_by(spacing) {
    for y in (0..width).step_by(spacing) {
      agents.push(((x, y).into(), Box::new(SimpleAgent) as Box<dyn Agent>));
    }
  }
  ActualWorld::new((width, width).into(), agents, validate)
}

fn world(c: &mut Criterion) {
  let mut group = c.benchmark_group("world");
  let width: isize = 1000;
  for spacing in (50..=100).step_by(25) {
    group.throughput(Throughput::Elements((width / spacing).pow(2) as u64));
    group.bench_with_input(
      BenchmarkId::new("validating", spacing),
      &spacing,
      |b, &spacing| {
        let mut world = get_world(width, spacing as usize, true);
        b.iter(|| world.do_step());
      },
    );
    group.bench_with_input(
      BenchmarkId::new("non-validating", spacing),
      &spacing,
      |b, &spacing| {
        let mut world = get_world(width, spacing as usize, false);
        b.iter(|| world.do_step());
      },
    );
  }
  group.finish();
}

criterion_group!(benches, world);
criterion_main!(benches);

// 5000/1000 ->     9,993
//    5/01 ->      23,252
//   50/10 ->      14,000
//  100/20 ->      14,000
//  100/10 ->      96,000
//  100/05 ->     917,767
//  200/10 ->     916,172
// 1000/10 -> 443,482,526