On Fri, Oct 21, 2016 at 5:24 AM, Hubert Weissmann <[email protected]> wrote:
> Hi, > > Thanks for pointing this out. With that, I can try to extend the > interface, if I find time for this. > > Or are there plans to do it from the developers side? > AFAIK, there are no formal developer plans to do this. We'd love a Pull Request! > > I think, it is really worth to implement since one could save much time > from this. > > Best, > > Hubert > > > On 21.10.2016 10:52, Julian Andrej wrote: > > Hi, > > > > in the SLEPc EPS documentation [1] you can see that the initial > > vectors have to be set explicitly, otherwise the initial vector is > > initialized with random values. > > You have to retrieve the EPS object somehow and set the initial > > starting vector manually, as there is no method implemented for that, > > yet. (No call to EPSSetInitialSpace in the libmesh sources) > > > > [1] http://slepc.upv.es/documentation/current/docs/manualpages/EPS/ > EPSSetInitialSpace.html#EPSSetInitialSpace > > > > On Fri, Oct 21, 2016 at 8:47 AM, Hubert Weissmann <[email protected]> > wrote: > >> Dear all, > >> > >> I wander whether one can set an initial guess to a (generalised) > >> eigenproblem in LibMesh. > >> > >> In the mailing list I found this question posed twice, where Roy said he > >> 'believes' that System::solution is used. > >> > >> However, I didn't any difference in performance whether I set > >> System::solution somehow before solving or not (which may be due to a > >> bad guess of course). However, I also didn't find any reference to it in > >> the EigenSolver class (except in get_eigenpair() function where it is > >> copied in the other direction). > >> > >> So my question is: Did I just seek in the wrong place or misunderstand > >> the interface there or is it not possible to set an initial guess to > >> slepc at this point? > >> > >> Any help is appreciated, > >> > >> Best, > >> > >> Hubert > >> > >> > >> > >> ------------------------------------------------------------ > ------------------ > >> Check out the vibrant tech community on one of the world's most > >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot > >> _______________________________________________ > >> Libmesh-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/libmesh-users > > > > > > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Libmesh-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/libmesh-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
