Justin Chang <jchan...@uh.edu> writes: > Jed thank you for the response. > > 1) In my case, I want to output a transient diffusion problem (with > DMPlex). I see that in ex11 there's a TSMonitorSet(). Is this (and its > calling function) be the place I have something along the lines that you > have suggested? That is, if TSMonitorSet() calls MonitorVTK(), then > MonitorVTK() would have PetscViewerVTKOpen(...). Am I along the right track?
Yes. A simple case can be done automatically: -ts_monitor_solution_vtk 'filename-%03D.vtu' but if you want something more complicated, you should write your own monitor. > 2) What I meant by parallel was if each rank would output its local part of > the solution, kind of like the way it's done with FEniCS. That way, if I > had an extremely large solution set (at least over 10 million DOFS) then I > wouldn't be stuck with one giant ASCII file. Unless that's what binary > formats like HDF5 are for? * vtu is a binary format (ASCII/XML header followed by binary data). * Creating thousands of small files is worse. * 10M DOFs is small. * HDF5 is a better format, but also a bigger dependency and somewhat higher effort to work with.
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