Max dimension size of a grid size    (x,y,z): (2147483647, 65535, 65535)

addKernel<<<1, size>>>(dev_c, dev_a, dev_b);

addKernel<<<dim3(65535, 1, 1), size>>>(dev_c, dev_a, dev_b);

addKernel<<<dim3(65536, 1, 1), size>>>(dev_c, dev_a, dev_b);