Hello, I'm trying to solve a linear elasticity problem based on a tetraheadral mesh with over a million degrees of freedom.
I've been using the LU solver in MUMPS but I'm now forced to switch to an iterative solver because of the memory requirements of that solver. CG and BoomerAMG in hypre seem to be a good combination, but I've not been able to achieve convergence. The residual never goes below 1 even after several thousand iterations and shows high oscillations. The parameters I'm using are -ksp_type cg -ksp_monitor -ksp_converged_reason -pc_type hypre -pc_hypre_type boomeramg -pc_hypre_boomeramg_strong_threshold 0.7 -log_summary -eps_monitor -st_type sinvert Does anyone have recommendations / prior experience on successfully using BoomerAMG in libMesh? Thanks, Dana ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
