Jed, I totally understand your answer ! I was just wondering if a relevant option (at the command line) could do the trick. Barry, I'll try to give a try to your suggestion.
Thanks, Franck ----- Mail original ----- > De: "Barry Smith" <bsm...@mcs.anl.gov> > À: "Franck Houssen" <franck.hous...@inria.fr> > Cc: "petsc-dev" <petsc-dev@mcs.anl.gov> > Envoyé: Mardi 1 Août 2017 20:09:29 > Objet: Re: [petsc-dev] How to get ordered (readable) dumps when using > ksp_view with several prefixed solvers (1 > solver per MPI proc) ? > > > > On Aug 1, 2017, at 7:10 AM, Franck Houssen <franck.hous...@inria.fr> wrote: > > > > How to get ordered (readable) dumps when using ksp_view with several > > prefixed solvers (1 solver per MPI proc) ? > > > > Say I have 2 procs. Each proc has a local solver prefixed "s". When I add > > -s_ksp_view to the command line, logs of both (local s) solvers from both > > procs are mixed in the standard output: makes things difficult to > > understand ! > > > > Is there an option to force synchronized dumps in this case (sort of > > PetscSynchronizedPrintf for ksp_view) ? > > Or each proc needs to dump logs to a file with PetscViewerASCIIOpen for > > instance ? > > If you are willing to add something to your code you can use > > PetscViewerGetSubViewer() > KSPView() > PetscViewerRestoreSubViewer() > > if the ksp is sequential you could use something like > > PetscViewer sviewer; > PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer) > KSPView(ksp,sviewer) > PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer) > PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD); > > > > > > Franck > >
