Thomas Gross <[email protected]> writes: > Please find enclosed the log summary for the runs. > > I used the following options for Prometheus and GAMG: > Prometheus: > -ksp_type cg -pc_type prometheus -log_summary -ksp_monitor -ksp_view > -aggmg_smooths 1 -options_left > GAMG: > -ksp_type cg -pc_type gamg -pc_gamg_type agg -pc_gamg_agg_nsmooths 1 > -log_summary -ksp_monitor -ksp_view -options_left
This is a pretty small problem, but switch back to a single smoothing iteration -mg_levels_ksp_max_it 1. An alternative is -mg_levels_ksp_type richardson -mg_levels_pc_type sor. Note that you are calling KSPSolve 3 times with GAMG, but only once with Prometheus.
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