Developer Guide and Reference

  • 2021.4
  • 09/27/2021
  • Public Content



Migration of __activemask is not supported. You may need to use 0xffffffff instead or adjust the code.

Detailed Help

There is currently no functional equivalent of
in SYCL. If there is no flow control that will make the thread inactive, 0xffffffff can be used as an alternative. Otherwise, you may need to rewrite the thread logic.

Suggestions to Fix

Check if 0xffffffff can be used instead of
. If it cannot be used, redesign the thread logic.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at