message: add -fno-vectorize to compiler flags, this disables auto-vectorization , where the auto loop vectoriziation preprocess conflicts with collapse(2)
diff: @@ -17,8 +17,8 @@ set(RAJA_COMPILER "RAJA_COMPILER_CLANG" CACHE STRING "")
  set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-coral-2017.10.13/bin/clang++-gpu" CACHE PATH "")
  set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-coral-2017.10.13/bin/clang-gpu" CACHE PATH "")
  -set(CMAKE_CXX_FLAGS_RELEASE "-O3" CACHE STRING "")
  -set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g" CACHE STRING "")
  +set(CMAKE_CXX_FLAGS_RELEASE "-O3 -fno-vectorize" CACHE STRING "")
  +set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g -fno-vectorize" CACHE STRING "")
  set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g" CACHE STRING "")
  set(RAJA_RANGE_ALIGN 4 CACHE INT "")
  