Construct CoreParams from new problem input in celer-sim

app/celer-g4/RunInput.cc

@@ -51,7 +51,7 @@ inp::Problem load_problem(RunInput const& ri)
 
     // Control
     p.control.capacity = [&ri] {
-        inp::StateCapacity capacity;
+        inp::CoreStateCapacity capacity;
         capacity.tracks = ri.num_track_slots;
         capacity.initializers = ri.initializer_capacity;
         capacity.secondaries = static_cast<size_type>(ri.secondary_stack_factor

app/celer-g4/celer-g4.cc

@@ -276,7 +276,7 @@ int main(int argc, char* argv[])
     }
 
     // Create params, which need to be shared with detectors as well as
-    // initialization, and can be written for output
+    // initialization, and can be written for output (default to stdout)
     auto params = std::make_shared<celeritas::SharedParams>();
 
     try
@@ -286,13 +286,19 @@ int main(int argc, char* argv[])
     catch (std::exception const& e)
     {
         CELER_LOG(critical) << "While running " << argv[1] << ": " << e.what();
+        auto e_output = std::make_shared<celeritas::ExceptionOutput>(
+            std::current_exception());
         if (*params)
         {
-            params->output_reg()->insert(
-                std::make_shared<celeritas::ExceptionOutput>(
-                    std::current_exception()));
+            params->output_reg()->insert(e_output);
             params->Finalize();
         }
+        else
+        {
+            celeritas::OutputRegistry reg;
+            reg.insert(e_output);
+            reg.output(&std::cout);
+        }
         return EXIT_FAILURE;
     }
 

app/celer-sim/CMakeLists.txt

@@ -23,10 +23,6 @@ endif()
 if(CELERITAS_USE_OpenMP)
   list(APPEND LIBRARIES OpenMP::OpenMP_CXX)
 endif()
-if(CELERITAS_USE_ROOT)
-  list(APPEND SOURCES RootOutput.cc)
-  list(APPEND LIBRARIES ROOT::Core ROOT::Tree)
-endif()
 
 # Add the executable
 celeritas_add_executable(celer-sim ${SOURCES})
@@ -82,7 +78,7 @@ function(celer_sim_test test_ext gdml_inp_name hepmc3_inp_name mctruth_name)
     "${_driver}" "${_gdml_inp}" "${_hepmc3_inp}" "${_mctruth_out}"
   )
   set_tests_properties("${_name}" PROPERTIES
-    ENVIRONMENT "${_env};${CELER_G4ENV}"
+    ENVIRONMENT "${_env};${CELER_G4ENV};${CELER_OMP_ENV}"
     RESOURCE_LOCK gpu
     REQUIRED_FILES "${_driver};${_gdml_inp};${_hepmc3_inp}"
     LABELS "app;nomemcheck;gpu"