message: Support single gpu systems
diff: @@ -72,7 +72,7 @@ if ( RAJA_FOUND AND UMPIRE_FOUND )
  # C++ exception with description "CUDAassert" thrown in the test body.
  set_property(TEST spin_bvh
  APPEND
  - PROPERTY ENVIRONMENT "CUDA_VISIBLE_DEVICES=1")
  + PROPERTY ENVIRONMENT "CUDA_VISIBLE_DEVICES=0") # Zero based indexed, so only first GPU is visible
  endif()
  