// Row-wise sum reduction over the last dim of a row-major [rows, cols] f32 buffer. WGSL port.
struct Params { rows: u32, cols: u32 };
@group(0) @binding(0) var<uniform> p: Params;
@group(0) @binding(1) var<storage, read> inp: array<f32>;
@group(0) @binding(2) var<storage, read_write> o: array<f32>;
@compute @workgroup_size(64, 1, 1)
fn main(@builtin(global_invocation_id) gid: vec3<u32>) {
let row = gid.x;
if (row < p.rows) {
var acc: f32 = 0.0;
let base = row * p.cols;
for (var c: u32 = 0u; c < p.cols; c = c + 1u) { acc = acc + inp[base + c]; }
o[row] = acc;
}
}