tiling parallel_for_each

gistfile1.txt

#include <amp.h>
#include <vector>
#include <stdlib.h>
using namespace Concurrency;
using namespace std;
const static int DOMAIN_SIZE = 2048;
const static int BLOCK_SIZE = 16;

void foo() {
    Concurrency::extent<1> g(DOMAIN_SIZE);
    vector<int> a(DOMAIN_SIZE);
    Concurrency::array<int, 1> a_a(g);
 
    parallel_for_each(a_a.get_extent().template tile<BLOCK_SIZE>(), [&] (tiled_index<BLOCK_SIZE> idx) restrict(amp) {
//    parallel_for_each(a_a.get_extent(), [&] (index<1> idx) restrict(amp) {
      a_a[idx] = 1;
    });

    a = a_a;

    for (int i=0; i<DOMAIN_SIZE; ++i) {
      if (a[i] != 1) {
        fprintf(stderr, "wrong answer idx = %d bad value= %d\n", i, a[i]);
        exit(-1);
      }
    }
} 

int main() {
foo();
}