Hello All, I am working on a problem that entails updating the nodal coordinates of the mesh at every timestep (and is performed before the beginning of the problem solve). If I'm not mistaken, when running the simulation in parallel each processor owns a subset of the mesh nodes and no one node is shared amongst multiple processors. Other processors do, however, have information of the bordering subdomain nodes that are associated with the element DOFs that they own. Thus, if I update the position of the nodes by iterating over the local nodes, then this requires synchronization amongst processors to update the shared DOFs. How can I achieve this synchronization for the "ghost" DOFs? If this entails an entire mesh redistribution or some other expensive operation, then would it possibly be more efficient to iterate over all nodes (not only local) to avoid this costly step?
Lastly, is updating only the coordinates of the nodes sufficient or are there any other things that I should be weary of? In the code, anywhere where calculations are done on the element, the reinit function is called and the call is placed after the accessor function calls. This should take care of everything, right? Thank you, Namu ------------------------------------------------------------------------------ _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
