File: unrolled_reduction.cpp

package info (click to toggle)
halide 21.0.0-4
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 55,752 kB
  • sloc: cpp: 289,334; ansic: 22,751; python: 7,486; makefile: 4,299; sh: 2,508; java: 1,549; javascript: 282; pascal: 207; xml: 127; asm: 9
file content (31 lines) | stat: -rw-r--r-- 599 bytes parent folder | download | duplicates (4)
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
#include "Halide.h"
#include <stdio.h>

using namespace Halide;

int main(int argc, char **argv) {
    Var x("x"), y("y"), z("z");

    Buffer<float> noise(32);
    for (int i = 0; i < 32; i++) {
        noise(i) = (float)rand() / (float)RAND_MAX;
    }

    Func f("f");
    Func g("g");
    RDom r(0, 32);

    g(x, y) = 0.0f;
    g(r.x, y) += noise(r.x);

    f(x, y, z) = g(x, y) + g(x + 1, y);

    RVar rxo, rxi;
    g.compute_at(f, y).update().split(r.x, rxo, rxi, 2).unroll(rxi);
    f.unroll(z, 2);

    Buffer<float> im = f.realize({64, 64, 4});

    printf("Success!\n");
    return 0;
}