It would be failed twice out of 10 times. compiler_local_memory_barrier_wg64: compiler_local_memory_barrier_wg64() [FAILED] Error: dst[i+j] == 63-j at file /home/OpenCL_bak/beignet/utests/compiler_local_memory_barrier_wg64.cpp, function compiler_local_memory_barrier_wg64, line 42 Thanks --Sun, Yi