On Wed, Feb 9, 2022 at 7:24 AM Bruno Rammon Silva Souza via petsc-users < [email protected]> wrote:
> Hello everyone, > > I am using the LBFGS type in the SNES solver, and it's working fine. But I > want to change the number of stored updates in this method. This variable > of quasi-newton methods is usually chosen by the runtime option: -snes_qn_m > <m>. However, I would like to change this variable inside my code, when > calling a function, for example, but I can't find any kind of PETSc > function that changes this variable directly. Is there any function like > this? If not, is there some way to do that without using -snes_qn_m <m> at > runtime? > This is an oversight which we will fix. For now you can use https://petsc.org/main/docs/manualpages/Sys/PetscOptionsSetValue.html in your code. Thanks, Matt > Best regards, > -- > Bruno Souza > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
