CHECK: Testing fallback_allocator on device
CHECK-SAME: with {{[0-9]+}} bytes of device memory
     CHECK: attempting to sort {{[0-9]+}} values
     CHECK:   allocated {{[0-9]+}} bytes of device memory
     CHECK:   allocated {{[0-9]+}} bytes of device memory
     CHECK: attempting to sort {{[0-9]+}} values
     CHECK:   allocated {{[0-9]+}} bytes of device memory
     CHECK:   allocated {{[0-9]+}} bytes of pinned host memory (fallback successful)