Update CUPyDO Interface

dart/api/cupydo.py

@@ -53,8 +53,9 @@ class Dart(FluidSolver):
         """
         status = self.solver.run()
         if status > 1:
-            raise RuntimeError('DART solver diverged!\n')
+            return False
         self.__setCurrentState()
+        return True
 
     def __setCurrentState(self):
         """Compute nodal forces from nodal normalized forces