std :: ml::gpu_mps
Function std::mps_sum_f32_chained
int mps_sum_f32_chained(struct MpsBuf bufA, &float out, unsigned long n)out[0] = sum(bufA[0..n)) -- chained version of mps_sum_f32 above, input already a still-pending GPU buffer. Same deferred-partial-sum-combine finalize as the non-chained batched path.