message: added default CMAKE_CUDA_ARCHITECTURES
diff: @@ -167,6 +167,10 @@ include(${PROJECT_SOURCE_DIR}/cmake/DetectOptions.cmake)
  if(ADIOS2_HAVE_CUDA)
  set(CMAKE_CUDA_STANDARD 11)
  set(CMAKE_CUDA_STANDARD_REQUIRED TRUE)
  + if(NOT DEFINED CMAKE_CUDA_ARCHITECTURES)
  + # default 70 to match Summit V100
  + set(CMAKE_CUDA_ARCHITECTURES 70)
  + endif()
  endif()
  if(ADIOS2_HAVE_MPI)
  