Intel Bringing SIMD to JavaScript(01.org)

  var batch = [], 
    results= [], 
    i = 0, 
    j = 0, 
    len = items.length, 
    a, b = SIMD.int32x4(2, 2, 2, 2), 
    c;
  var mod = len % 4;
  items.forEach(function (item) {
    if (i < mod) {
      results.push(item * 2);
      i++;
    } else if (j < 4) {
      batch.push(item);
      j++;
    } else {
      a = SIMD.float32x4(batch[0], batch[1], batch[2], batch[3]);
      c = SIMD.float32x4.mul(a, b);
      results.push(c.x);
      results.push(c.y);
      results.push(c.z);
      results.push(c.w);
      batch = [];
      j = 0;
    }
  });