laddu-kernel 0.21.4

Amplitude analysis tools for Rust
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

//! Auditable support matrix for every kernel instruction variant.
//!
//! `Supported` means the layer has an explicit semantic path for the variant.
//! `Rejected` means it has an explicit, intentional unsupported path rather
//! than silently accepting the instruction. The exhaustive match makes a new
//! `KernelInstruction` variant fail this test at compile time until its support
//! status is reviewed across every layer.

use laddu_expr::{
    BinaryOp, UnaryOp,
    parameters::{ParamLayout, Parameter},
};
use laddu_kernel::ir::{KernelInstruction, KernelValueId};
use num::complex::Complex64;
use std::collections::HashSet;

#[derive(Copy, Clone, Debug, PartialEq, Eq)]
enum Support {
    Supported,
    Rejected,
}

#[derive(Copy, Clone, Debug, PartialEq, Eq)]
struct SupportRow {
    name: &'static str,
    validation: Support,
    autodiff: Support,
    cpu_interpreter: Support,
    jit: Support,
    wgpu: Support,
}

fn support(instruction: &KernelInstruction) -> SupportRow {
    use Support::{Rejected, Supported};

    let (autodiff, wgpu) = match instruction {
        KernelInstruction::Cached(_)
        | KernelInstruction::RealConstant(_)
        | KernelInstruction::ComplexConstant(_)
        | KernelInstruction::Parameter(_)
        | KernelInstruction::Unary { .. }
        | KernelInstruction::Binary { .. }
        | KernelInstruction::Add(_)
        | KernelInstruction::Mul(_)
        | KernelInstruction::Complex { .. }
        | KernelInstruction::Vector(_)
        | KernelInstruction::Matrix { .. }
        | KernelInstruction::Component { .. }
        | KernelInstruction::MatrixElement { .. }
        | KernelInstruction::MatMul { .. }
        | KernelInstruction::MatVec { .. }
        | KernelInstruction::Dot { .. }
        | KernelInstruction::Solve { .. } => (Supported, Supported),
        KernelInstruction::SolveRow { .. } => (Supported, Rejected),
        KernelInstruction::SolveRowAdjointElement { .. } => (Rejected, Rejected),
    };

    SupportRow {
        name: instruction.diagnostic_name(),
        validation: Supported,
        autodiff,
        cpu_interpreter: Supported,
        jit: Supported,
        wgpu,
    }
}

fn id(index: usize) -> KernelValueId {
    KernelValueId::from_index(index)
}

fn representatives() -> Vec<KernelInstruction> {
    let parameter = ParamLayout::new([Parameter::free("p")])
        .unwrap()
        .id("p")
        .unwrap();
    vec![
        KernelInstruction::Cached(0),
        KernelInstruction::RealConstant(1.0),
        KernelInstruction::ComplexConstant(Complex64::new(1.0, 1.0)),
        KernelInstruction::Parameter(parameter),
        KernelInstruction::Unary {
            op: UnaryOp::Neg,
            input: id(0),
        },
        KernelInstruction::Binary {
            op: BinaryOp::Add,
            lhs: id(0),
            rhs: id(1),
        },
        KernelInstruction::Add(vec![id(0)]),
        KernelInstruction::Mul(vec![id(0)]),
        KernelInstruction::Complex {
            re: id(0),
            im: id(1),
        },
        KernelInstruction::Vector(vec![id(0)]),
        KernelInstruction::Matrix {
            rows: 1,
            cols: 1,
            elements: vec![id(0)],
        },
        KernelInstruction::Component {
            input: id(0),
            index: 0,
        },
        KernelInstruction::MatrixElement {
            input: id(0),
            row: 0,
            col: 0,
        },
        KernelInstruction::MatMul {
            lhs: id(0),
            rhs: id(1),
        },
        KernelInstruction::MatVec {
            matrix: id(0),
            vector: id(1),
        },
        KernelInstruction::Dot {
            lhs: id(0),
            rhs: id(1),
        },
        KernelInstruction::Solve {
            matrix: id(0),
            rhs: id(1),
        },
        KernelInstruction::SolveRow {
            row_slot: 0,
            rhs: vec![id(0)],
        },
        KernelInstruction::SolveRowAdjointElement {
            row_slot: 0,
            index: 0,
            len: 1,
            adjoint: id(0),
        },
    ]
}

#[test]
fn every_instruction_variant_has_one_support_row() {
    let rows: Vec<_> = representatives().iter().map(support).collect();
    let names: HashSet<_> = rows.iter().map(|row| row.name).collect();

    assert_eq!(rows.len(), 19);
    assert_eq!(names.len(), rows.len());
    assert!(rows.iter().all(|row| row.validation == Support::Supported));
    assert!(
        rows.iter()
            .all(|row| row.cpu_interpreter == Support::Supported)
    );
    assert!(rows.iter().all(|row| row.jit == Support::Supported));
}

#[test]
fn intentional_support_gaps_are_explicit() {
    let rows: Vec<_> = representatives().iter().map(support).collect();
    let rejected_by_autodiff: Vec<_> = rows
        .iter()
        .filter(|row| row.autodiff == Support::Rejected)
        .map(|row| row.name)
        .collect();
    let rejected_by_wgpu: Vec<_> = rows
        .iter()
        .filter(|row| row.wgpu == Support::Rejected)
        .map(|row| row.name)
        .collect();

    assert_eq!(rejected_by_autodiff, ["SolveRowAdjointElement"]);
    assert_eq!(rejected_by_wgpu, ["SolveRow", "SolveRowAdjointElement"]);
}