Hi, Jean-Paul, thanks very much, i am using trilinos 12.10,1. I will prepare a simple minimal test and mail it to you asap.
best, lailai On Tuesday, 31 January 2017 01:42:06 UTC-5, Jean-Paul Pelteret wrote: > > Dear Lailai, > > Internally we store the Amesos solver in a smart pointer > <https://github.com/dealii/dealii/blob/master/include/deal.II/lac/trilinos_solver.h#L737>, > > so when the solver goes out of scope the solver is destroyed. At this time, > the Amesos solver should clean up after itself - in its class > documentation > <https://trilinos.org/docs/dev/packages/amesos/doc/html/classAmesos__BaseSolver.html> > > I can find no mention of a "delete" or "destroy" function. So I don't think > its likely that this is causing a memory leak, but if you're able to > produce a minimal test case then we could investigate further. I suppose I > should ask, which version of Trilinos are you using? > > Regards, > Jean-Paul > > > On Tuesday, January 31, 2017 at 3:41:47 AM UTC+1, femFluid wrote: >> >> hi, dear all, >> >> i am using trilino's direct solver interface to solve a time-dependent >> problem. I realized that >> when the number of iterations increases, the memory usage also increases. >> This increase >> does not arise when turning the solver off, so just assembling the >> matrices. >> >> At the beginning, i used the following subroutine at every time step, >> >> { >> deallog.push("DirectKLU"); >> TrilinosWrappers::SolverDirect::AdditionalData data; >> data.solver_type = "Amesos_Klu"; >> SolverControl solver_control (1000, 1e-10); >> TrilinosWrappers::SolverDirect solver(solver_control, data); >> solver.solve (matrix, solution, rhs); >> thick_constraints.distribute (thick_solution); >> } >> >> then i realized that the memory might be allocated every time when >> defining TrilinosWrappers::SolverDirect solver(.....), which is not >> released. >> Then I predefine the solver in a namespace, which is the used by calling >> solver.solve (matrix, solution, rhs) at each step. Still, the memory >> leakage >> occurs. >> >> I also tried to use "Amesos_Mumps", the problem still exists. I tried to >> see the documentation of Amesos, i realized that when amesos solver >> finished solving, there is a procedure 'delete solver' after. May I ask >> whether >> such a member function exists in dealII wrappers? Thanks in advance, >> >> best, >> lailai >> > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
