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| 1 | +// SPDX-License-Identifier: Apache-2.0 |
| 2 | +// SPDX-FileCopyrightText: Copyright the Vortex contributors |
| 3 | + |
| 4 | +//! Benchmarks for `intersect_by_rank`. |
| 5 | +
|
| 6 | +#![allow(clippy::unwrap_used, clippy::cast_possible_truncation)] |
| 7 | + |
| 8 | +use divan::Bencher; |
| 9 | +use vortex_buffer::BitBuffer; |
| 10 | +use vortex_mask::Mask; |
| 11 | + |
| 12 | +fn main() { |
| 13 | + divan::main(); |
| 14 | +} |
| 15 | + |
| 16 | +// Standard test cases |
| 17 | +const BENCH_ARGS: &[(usize, &str)] = &[ |
| 18 | + (10_000, "random"), |
| 19 | + (10_000, "runs"), |
| 20 | + (100_000, "random"), |
| 21 | + (100_000, "runs"), |
| 22 | +]; |
| 23 | + |
| 24 | +// Sparse test cases (varying base selectivity) |
| 25 | +const SPARSE_ARGS: &[(usize, f64, &str)] = &[ |
| 26 | + (100_000, 0.01, "sparse_1pct"), |
| 27 | + (100_000, 0.05, "sparse_5pct"), |
| 28 | + (100_000, 0.10, "sparse_10pct"), |
| 29 | + (100_000, 0.50, "dense_50pct"), |
| 30 | +]; |
| 31 | + |
| 32 | +// Four-case density matrix: (self_density, mask_density) |
| 33 | +const DENSITY_MATRIX_ARGS: &[(f64, f64, &str)] = &[ |
| 34 | + (0.05, 0.05, "self_sparse_mask_sparse"), |
| 35 | + (0.05, 0.50, "self_sparse_mask_dense"), |
| 36 | + (0.50, 0.05, "self_dense_mask_sparse"), |
| 37 | + (0.50, 0.50, "self_dense_mask_dense"), |
| 38 | +]; |
| 39 | + |
| 40 | +fn create_random_mask(len: usize, selectivity: f64) -> Mask { |
| 41 | + Mask::from_buffer(BitBuffer::from_iter((0..len).map(|i| { |
| 42 | + let threshold = (selectivity * 1000.0) as usize; |
| 43 | + (i * 7 + 13) % 1000 < threshold |
| 44 | + }))) |
| 45 | +} |
| 46 | + |
| 47 | +fn create_runs_mask(len: usize, run_len: usize, gap_len: usize) -> Mask { |
| 48 | + Mask::from_buffer(BitBuffer::from_iter((0..len).map(|i| { |
| 49 | + let cycle = run_len + gap_len; |
| 50 | + (i % cycle) < run_len |
| 51 | + }))) |
| 52 | +} |
| 53 | + |
| 54 | +fn create_fixture(size: usize, pattern: &str) -> (Mask, Mask) { |
| 55 | + match pattern { |
| 56 | + "random" => { |
| 57 | + let base = create_random_mask(size, 0.5); |
| 58 | + let rank_len = base.true_count(); |
| 59 | + let rank = create_random_mask(rank_len, 0.5); |
| 60 | + (base, rank) |
| 61 | + } |
| 62 | + "runs" => { |
| 63 | + let base = create_runs_mask(size, 64, 64); |
| 64 | + let rank_len = base.true_count(); |
| 65 | + let rank = create_runs_mask(rank_len, 64, 64); |
| 66 | + (base, rank) |
| 67 | + } |
| 68 | + _ => unreachable!(), |
| 69 | + } |
| 70 | +} |
| 71 | + |
| 72 | +fn create_sparse_fixture(size: usize, selectivity: f64) -> (Mask, Mask) { |
| 73 | + let base = create_random_mask(size, selectivity); |
| 74 | + let rank_len = base.true_count(); |
| 75 | + let rank = create_random_mask(rank_len, 0.5); |
| 76 | + (base, rank) |
| 77 | +} |
| 78 | + |
| 79 | +fn create_density_matrix_fixture( |
| 80 | + size: usize, |
| 81 | + self_density: f64, |
| 82 | + mask_density: f64, |
| 83 | +) -> (Mask, Mask) { |
| 84 | + let base = create_random_mask(size, self_density); |
| 85 | + let rank_len = base.true_count(); |
| 86 | + let rank = create_random_mask(rank_len, mask_density); |
| 87 | + (base, rank) |
| 88 | +} |
| 89 | + |
| 90 | +/// Standard patterns (random / runs) |
| 91 | +#[divan::bench(args = BENCH_ARGS)] |
| 92 | +fn intersect_by_rank(bencher: Bencher, (size, pattern): (usize, &str)) { |
| 93 | + let (base, rank) = create_fixture(size, pattern); |
| 94 | + bencher |
| 95 | + .with_inputs(|| (&base, &rank)) |
| 96 | + .bench_refs(|(base, rank)| base.intersect_by_rank(rank)); |
| 97 | +} |
| 98 | + |
| 99 | +/// Sparse base masks (varying selectivity) |
| 100 | +#[divan::bench(args = SPARSE_ARGS)] |
| 101 | +fn sparse(bencher: Bencher, (size, selectivity, _name): (usize, f64, &str)) { |
| 102 | + let (base, rank) = create_sparse_fixture(size, selectivity); |
| 103 | + bencher |
| 104 | + .with_inputs(|| (&base, &rank)) |
| 105 | + .bench_refs(|(base, rank)| base.intersect_by_rank(rank)); |
| 106 | +} |
| 107 | + |
| 108 | +/// Density matrix (self_density x mask_density) |
| 109 | +#[divan::bench(args = DENSITY_MATRIX_ARGS)] |
| 110 | +fn density_matrix(bencher: Bencher, (self_density, mask_density, _name): (f64, f64, &str)) { |
| 111 | + let (base, rank) = create_density_matrix_fixture(100_000, self_density, mask_density); |
| 112 | + bencher |
| 113 | + .with_inputs(|| (&base, &rank)) |
| 114 | + .bench_refs(|(base, rank)| base.intersect_by_rank(rank)); |
| 115 | +} |
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