[petsc-dev] explaining hierarchical composible solvers

[Barry Smith]

In order to help explain and understand composible solver I started to add the PetscViewerDraw ability to the solver objects to graphically explain the solvers used and the decomposition of the solvers. It is very crude now but I've attached a couple of images of what are generated when using -ts/snes/ksp_view_draw   We need to add more information (somehow) to indicate  the multigrid levels as "levels" the field split decomposition etc. Any thoughts or code welcome.

   Barry



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