Ok, now use a real integrator with adaptive timestep selection. I suggest the additional options -ts_type arkimex -ts_arkimex_fully_implicit -ts_adapt_monitor but Emil and Jed will know much better than me. Barry > On Jun 2, 2015, at 12:51 PM, Italo Tasso <italo at tasso.com.br> wrote: > > <ts_view.txt>