vyre-driver-cuda 0.7.2

CUDA/PTX backend for vyre through the CUDA driver API.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

use super::*;

#[test]
fn structural_equivalence_plan_emits_unique_exact_eclass_merges() {
    let snapshot = GpuEGraphSnapshot::build([
        (10u32, "lit", &[][..]),
        (20u32, "lit", &[][..]),
        (30u32, "add", &[10u32, 20u32][..]),
        (40u32, "add", &[10u32, 20u32][..]),
        (50u32, "add", &[20u32, 10u32][..]),
        (30u32, "add", &[10u32, 20u32][..]),
    ]);
    let image = snapshot
        .try_pack_device_image()
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - valid egraph image must pack");

    let plan = plan_cuda_egraph_structural_equivalences(
        &image,
        view_for_image(&image),
        CudaEGraphKernelLaunchConfig {
            threads_per_block: 8,
            max_blocks_per_launch: 1,
        },
    )
    .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - structural equivalence plan must build");

    assert_eq!(
        plan.equivalences,
        vec![
            Equivalence {
                left: 10,
                right: 20,
            },
            Equivalence {
                left: 30,
                right: 40,
            },
        ]
    );
    assert_eq!(plan.exact_pair_count, 4);
    assert_eq!(plan.redundant_pair_count, 1);
    assert_eq!(plan.rejected_candidate_pair_count, 0);
    assert_eq!(plan.equivalence_output_words, 4);
}

#[test]
fn structural_equivalence_collection_filters_signature_collision_bucket() {
    let snapshot = GpuEGraphSnapshot::build([(0u32, "lit", &[][..]), (1u32, "add", &[0u32][..])]);
    let image = snapshot
        .try_pack_device_image()
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - valid egraph image must pack");
    let signature_plan = CudaEGraphSignatureBucketPlan {
        view: view_for_image(&image),
        buckets: vec![CudaEGraphSignatureBucket {
            signature: image.row_signatures()[0],
            first_bucket_row: 0,
            row_count: 2,
            candidate_pair_count: 1,
        }],
        bucket_rows: vec![0, 1],
        pair_waves: vec![CudaEGraphSignaturePairWave {
            bucket_index: 0,
            first_pair: 0,
            pair_count: 1,
            blocks: 1,
            threads_per_block: 1,
        }],
        candidate_pair_count: 1,
        total_blocks: 1,
    };

    let plan = collect_cuda_egraph_structural_equivalences(&image, signature_plan)
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - collision-safe structural collection must complete");

    assert!(plan.equivalences.is_empty());
    assert_eq!(plan.exact_pair_count, 0);
    assert_eq!(plan.redundant_pair_count, 0);
    assert_eq!(plan.rejected_candidate_pair_count, 1);
    assert_eq!(plan.equivalence_output_words, 0);
}

#[test]
fn signature_bucket_device_image_packs_fixed_width_records() {
    let snapshot = GpuEGraphSnapshot::build([
        (0u32, "lit", &[][..]),
        (1u32, "lit", &[][..]),
        (2u32, "lit", &[][..]),
    ]);
    let image = snapshot
        .try_pack_device_image()
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - valid egraph image must pack");
    let signature_plan = plan_cuda_egraph_signature_buckets(
        &image,
        view_for_image(&image),
        CudaEGraphKernelLaunchConfig {
            threads_per_block: 2,
            max_blocks_per_launch: 1,
        },
    )
    .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - signature bucket plan must build");

    let device_image = pack_cuda_egraph_signature_bucket_device_image(&signature_plan)
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - signature bucket device image must pack");

    assert_eq!(device_image.bucket_count, 1);
    assert_eq!(device_image.bucket_record_words, 5);
    assert_eq!(device_image.bucket_rows, vec![0, 1, 2]);
    assert_eq!(
        device_image.bucket_words,
        vec![image.row_signatures()[0], 0, 3, 3, 0,]
    );
    assert_eq!(device_image.candidate_pair_count, 3);
}

#[test]
fn structural_equivalence_launch_artifact_sizes_worst_case_output() {
    let snapshot = GpuEGraphSnapshot::build([
        (0u32, "lit", &[][..]),
        (1u32, "lit", &[][..]),
        (2u32, "lit", &[][..]),
        (3u32, "lit", &[][..]),
    ]);
    let image = snapshot
        .try_pack_device_image()
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - valid egraph image must pack");
    let signature_plan = plan_cuda_egraph_signature_buckets(
        &image,
        view_for_image(&image),
        CudaEGraphKernelLaunchConfig {
            threads_per_block: 4,
            max_blocks_per_launch: 1,
        },
    )
    .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - signature bucket plan must build");

    let artifact = plan_cuda_egraph_structural_equivalence_launch_artifact(&signature_plan)
        .expect("Fix: replace expect with fallible API or document caller precondition; panic only on programmer error - structural equivalence launch artifact must build");

    assert_eq!(artifact.bucket_image.bucket_count, 1);
    assert_eq!(artifact.output.max_equivalences, 6);
    assert_eq!(artifact.output.output_pair_words, 12);
    assert_eq!(artifact.output.output_pair_bytes, 48);
    assert_eq!(artifact.output.output_counter_words, 2);
    assert_eq!(artifact.output.output_counter_bytes, 8);
    assert_eq!(artifact.pair_waves.len(), 2);
}