DPCT1060

Intel® DPC++ Compatibility Tool Developer Guide and Reference

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ID 768918

Date 12/16/2022

Version

Public

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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 DPC++ code:

// migrated DPC++ code:

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

is manually adjusted to:

// manually adjusted code:

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

Suggestions to Fix

You may need to rewrite this code.

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Intel® DPC++ Compatibility Tool Developer Guide and Reference

DPCT1060

Message

Detailed Help

Suggestions to Fix