On 30 March 2016 at 19:54, Christian Peco Regales, Ph.D. <[email protected]> wrote:
> I have started to use the TS environment to solve a diffusion problem with > XFEM in which, at the beginning of every step, a number of values have to > be recomputed in order to properly fill the Jacobian (e.g. change some > quadrature weights). However, I see that the the function is expected with > the format func(TS ts), with no possibility of getting a user context to > perform the computations I need. > There are a number of ways to get around this: [1] Set an application context on the TS http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/TS/TSSetApplicationContext.html and retrieve via http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/TS/TSGetApplicationContext.html [2] It sounds like your information is related to geometry, so you could bundle it into a DM and use http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/TS/TSSetDM.html [3] The "nastiest" way is to use http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscContainerCreate.html#PetscContainerCreate and then compose the PetscContainer object with the TS object via http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscObjectCompose.html Thanks, Dave > Is there a way to get around that? Thanks! > > > Christian > > > _______________________________ > Christian Peco Regales, Ph.D. > Postdoctoral Research Associate > Civil and Environmental Engineering > Pratt School of Engineering > Duke University > 2407 CIEMAS (office) > Durham, NC 27708, USA > email: [email protected] > web: http://www.christianpeco.com <http://christianpeco.com> > _______________________________ >
