Actually, for the main solver it works. I'm thinking, could it be due to the fact that the second SNES instance is defined in a routine that is called somewhere inside the FormFunction of the main SNES? We are improving our boundary condition, which becomes quite complex, and we have a small problem to solve, so I'm trying to handle it with a SNES. So the two SNES are nested, in a sense.
Timothée Le mer. 15 janv. 2020 à 23:24, Timothée Nicolas <[email protected]> a écrit : > I can actually use some command line arguments. My line arguments actually > read > > -snes_mf -green_snes_monitor > > and the first -snes_mf argument (for the main solver snes) is correctly > taken into account. > I will try what Barry suggested, I'll tell you if I find the reason. > > Best regards, thanks for your comments > > Timothée > > Le mer. 15 janv. 2020 à 18:56, Matthew Knepley <[email protected]> a > écrit : > >> I think that Mark is suggesting that no command line arguments are >> getting in. >> >> Timothee, >> >> Can you use any command line arguments? >> >> Thanks, >> >> Matt >> >> On Wed, Jan 15, 2020 at 12:04 PM Smith, Barry F. via petsc-users < >> [email protected]> wrote: >> >>> >>> Should still work. Run in the debugger and put a break point in >>> snessetoptionsprefix_ and see what it is trying to do >>> >>> Barry >>> >>> >>> > On Jan 15, 2020, at 8:58 AM, Timothée Nicolas < >>> [email protected]> wrote: >>> > >>> > Hi, thanks for your answer, >>> > >>> > I'm using Petsc version 3.10.4 >>> > >>> > Timothée >>> > >>> > Le mer. 15 janv. 2020 à 14:59, Mark Adams <[email protected]> a écrit : >>> > I'm guessing a Fortran issue. What version of PETSc are you using? >>> > >>> > On Wed, Jan 15, 2020 at 8:36 AM Timothée Nicolas < >>> [email protected]> wrote: >>> > Dear PETSc users, >>> > >>> > I am confused by the usage of SNESSetOptionsPrefix. I understand this >>> is required if you have for example different SNES in your program and want >>> to set different options for them. >>> > So for my second snes I wrote >>> > >>> > call SNESCreate(MPI_COMM_SELF,snes,ierr) >>> > call SNESSetOptionsPrefix(snes,'green_',ierr) >>> > call SNESSetFromOptions(snes,ierr) >>> > >>> > etc. >>> > >>> > Then when launching the program I wanted to monitor that snes so I >>> launched it with the option -green_snes_monitor instead of -snes_monitor. >>> But I keep getting the message >>> > >>> > WARNING! There are options you set that were not used! >>> > WARNING! could be spelling mistake, etc! >>> > Option left: name:-green_snes_monitor (no value) >>> > >>> > What do I miss here? >>> > >>> > Best regards >>> > >>> > Timothée NICOLAS >>> >>> >> >> -- >> 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/> >> >
