[CUDA][HIP] sycl::uint3 data type

[jinz2014]

Will sycl::uint3 be equivalent to uint3 in CUDA and HIP ? If they are not equivalent, could you please suggest the workaround ?

Code example

        auto k = (const sycl::uint3 *) (d_keys+id*16);  // each key has at most 15 words (60 bytes)
        sycl::uint3 v;
        while (length > 12) {
          v = *k++;
           ...
        }

[aelovikov-intel]

Would sycl::marray work for you? https://godbolt.org/z/45doehb53

[jinz2014]

sycl::uint3 will not be equivalent to uint3 in CUDA. When migrating the uint3 type from CUDA to SYCL, it should be sycl::marray<unsigned int, 3>.

[AlexeySachkov]

sycl::uint3 is an alias to sycl::vec<uint32_t, 3> which in turn is required to have size and alignment of sycl::vec<uint32_t, 4> according to 4.14.2.6. Memory layout and alignment

If you need a "packed" 3-element vector, then you should either use sycl::marray as suggested above, or a custom data type