DPCT1060#

Message#

SYCL range can only be a 1D, 2D, or 3D vector. Adjust the code.

Detailed Help#

This warning is emitted when the number of dimensions of memory in the original code exceeds 3. Since SYCL* range supports only 1, 2 or 3 dimensions, the resulting code is not SYCL-compliant.

To fix the resulting code you can use the low-dimensional arrays to simulate high-dimensional arrays.

The following fix example demonstrates how to use a 3D array to simulate a 4D array.

The following migrated SYCL code:

1  dpct::constant_memory<int, 4> array(dimX, dimY, dimZ, dimW);
2  void kernel(sycl::id<1> idx,
3              dpct::accessor<int, dpct::constant, 4> const_array) {
4    ...
5        ... = const_array[x][y][z][w];
6    ...
7  }

is manually adjusted to:

1  dpct::constant_memory<int, 3> array(dimX, dimY, dimZ * dimW);
2  void kernel(sycl::id<1> idx,
3              dpct::accessor<int, dpct::constant, 3> const_array) {
4    ... = const_array[x][y][w * dimZ + z];
5    ...
6  }

Suggestions to Fix#

You may need to rewrite this code.