ruprim/reduce/components/instructions/
sum.rs

1use ruda_kernel::dsl as kernel_dsl;
2use super::{ReduceFamily, ReduceInstruction, ReduceRequirements};
3use crate::reduce::components::{
4    instructions::{Accumulator, AccumulatorFormat, Item, ReduceStep, Value},
5    precision::ReducePrecision,
6};
7use ruda_kernel::dsl::prelude::*;
8
9#[derive(Debug, RudaType, Clone)]
10pub struct Sum {}
11
12impl ReduceFamily for Sum {
13    type Instruction<P: ReducePrecision> = Self;
14    type Config = ();
15}
16
17#[ruda]
18impl<P: ReducePrecision> ReduceInstruction<P> for Sum {
19    type SharedAccumulator = SharedMemory<Vector<P::EA, P::SI>>;
20    type Config = ();
21
22    fn requirements(_this: &Self) -> ReduceRequirements {
23        ReduceRequirements { coordinates: false }
24    }
25
26    fn accumulator_format(_this: &Self) -> comptime_type!(AccumulatorFormat) {
27        AccumulatorFormat::Single
28    }
29
30    fn from_config(_config: Self::Config) -> Self {
31        Sum {}
32    }
33    fn null_input(_this: &Self) -> Vector<P::EI, P::SI> {
34        Vector::empty().fill(P::EI::from_int(0))
35    }
36
37    fn null_accumulator(_this: &Self) -> Accumulator<P> {
38        Accumulator::<P> {
39            elements: Value::new_single(Vector::empty().fill(P::EA::from_int(0))),
40            args: Value::new_None(),
41        }
42    }
43
44    fn reduce(
45        _this: &Self,
46        accumulator: &mut Accumulator<P>,
47        item: Item<P>,
48        #[comptime] reduce_step: ReduceStep,
49    ) {
50        let accumulator_item = &accumulator.elements.item();
51        let item = item.elements;
52        let elements = match reduce_step {
53            ReduceStep::Plane => *accumulator_item + plane_sum(Vector::cast_from(item)),
54            ReduceStep::Identity => *accumulator_item + Vector::cast_from(item),
55        };
56
57        accumulator.elements.assign(&Value::new_single(elements));
58    }
59
60    fn plane_reduce_inplace(_this: &Self, accumulator: &mut Accumulator<P>) {
61        let sum = plane_sum(Vector::cast_from(accumulator.elements.item()));
62        accumulator.elements.assign(&Value::new_single(sum));
63    }
64
65    fn fuse_accumulators(_this: &Self, accumulator: &mut Accumulator<P>, other: &Accumulator<P>) {
66        let accumulator_item = accumulator.elements.item();
67        let other_item = other.elements.item();
68
69        accumulator
70            .elements
71            .assign(&Value::new_single(accumulator_item + other_item));
72    }
73
74    fn to_output_parallel<Out: Numeric>(
75        _this: &Self,
76        accumulator: Accumulator<P>,
77        _shape_axis_reduce: usize,
78    ) -> Value<Out> {
79        let sum = Vector::vector_sum(accumulator.elements.item());
80
81        Value::new_single(Out::cast_from(sum))
82    }
83
84    fn to_output_perpendicular<Out: Numeric>(
85        _this: &Self,
86        accumulator: Accumulator<P>,
87        _shape_axis_reduce: usize,
88    ) -> Value<Vector<Out, P::SI>> {
89        Value::new_single(Vector::cast_from(accumulator.elements.item()))
90    }
91}
ruprim/reduce/components/instructions/sum.rs

ruprim/reduce/components/instructions/
sum.rs
