fix: reenable floating point exceptions

src/cmake/GeosxOptions.cmake

@@ -4,7 +4,8 @@ message( "CMAKE_SYSTEM_NAME = ${CMAKE_SYSTEM_NAME}" )
 message( "CMAKE_HOST_APPLE = ${CMAKE_HOST_APPLE}" )
 
 ### OPTIONS ###
-option( GEOS_ENABLE_TESTS "" ON )
+option( GEOS_ENABLE_FPE "Enables floating point exceptions" ON )
+option( GEOS_ENABLE_TESTS "Enables unit tests" ON )
 option( ENABLE_CALIPER "Enables Caliper instrumentation" OFF )
 
 option( ENABLE_MATHPRESSO "" ON )

src/coreComponents/linearAlgebra/interfaces/hypre/HypreInterface.cpp

@@ -40,6 +40,11 @@ namespace geos
 
 void HypreInterface::initialize()
 {
+#ifdef GEOS_USE_OPENMP
+  GEOS_LOG_RANK_0_IF( omp_get_max_threads()>1,
+                      "OMP_NUM_THREADS > 1 may not be optimal for certain hypre preconditioning options. " );
+#endif
+
   HYPRE_Init();
 #if GEOS_USE_HYPRE_DEVICE == GEOS_USE_HYPRE_CUDA || GEOS_USE_HYPRE_DEVICE == GEOS_USE_HYPRE_HIP
   HYPRE_SetExecutionPolicy( HYPRE_EXEC_DEVICE );

src/coreComponents/physicsSolvers/fluidFlow/CompositionalMultiphaseBase.cpp

@@ -127,7 +127,7 @@ CompositionalMultiphaseBase::CompositionalMultiphaseBase( const string & name,
   this->registerWrapper( viewKeyStruct::maxRelativeCompDensChangeString(), &m_maxRelativeCompDensChange ).
     setSizedFromParent( 0 ).
     setInputFlag( InputFlags::OPTIONAL ).
-    setApplyDefaultValue( LvArray::NumericLimits< real64 >::max ). // disabled by default
+    setApplyDefaultValue( LvArray::NumericLimits< real64 >::max/1.0e100 ). // disabled by default
     setDescription( "Maximum (relative) change in a component density in a Newton iteration" );
 
   this->registerWrapper( viewKeyStruct::allowLocalCompDensChoppingString(), &m_allowCompDensChopping ).