question about __syncwarp(mask)

[jinz2014]

Is "mask" missing when migrating __syncwarp(mask) ?

// void __syncwarp(unsigned mask=0xffffffff)


void a(unsigned mask, const sycl::nd_item<3> &item_ct1) {
   sycl::group_barrier(item_ct1.get_sub_group());
}

[tomflinda]

@jinz2014 #1. there is no mapping for __syncwarp when mask is not FULLMASK. #2. Then is no impact on function correctness, maybe have negative impact on performance. #3. When the mapping is available in SYCL side, we will plan to refine the migration.

Thanks.

[jinz2014]

Okay