Small fix to make DriverAdaptive more general

library/LibUtilities/BasicUtils/NekManager.hpp

@@ -258,6 +258,19 @@ namespace Nektar
                     }
                 }
 
+                static bool PoolCreated(std::string whichPool)
+                {
+                    bool value = false;
+                    typename ValueContainerPool::iterator x;
+
+                    x = m_ValueContainerPool.find(whichPool);
+                    if (x != m_ValueContainerPool.end())
+                    {
+                        value = true;
+                    }
+                    return value;
+                }
+
                 static void EnableManagement(std::string whichPool = "")
                 {
                     typename FlagContainerPool::iterator x;

library/SolverUtils/DriverAdaptive.cpp

@@ -293,9 +293,14 @@ void DriverAdaptive::v_Execute(ostream &out)
         //
         // @todo This could be made better by replacing individual matrices
         //       within the linear system.
-        LibUtilities::NekManager<MultiRegions::GlobalLinSysKey,
-                                 MultiRegions::GlobalLinSys>::
-            ClearManager(std::string("GlobalLinSys"));
+        if (LibUtilities::NekManager<MultiRegions::GlobalLinSysKey,
+                                     MultiRegions::GlobalLinSys>::
+                PoolCreated(std::string("GlobalLinSys")))
+        {
+            LibUtilities::NekManager<MultiRegions::GlobalLinSysKey,
+                                     MultiRegions::GlobalLinSys>::
+                ClearManager(std::string("GlobalLinSys"));
+        }
 
         int chkNumber = m_equ[0]->GetCheckpointNumber();
         int chkSteps  = m_equ[0]->GetCheckpointSteps();