Save solution/state snapshots

[ESeNonFossiIo]

Save the state of the system in order to continue the job in case of crash.
This feature could improve the usability on cluster for jobs that requires a lot of times.

[agzimmerman]

I recently began using deal.II. For a couple of months now I've been trying to use deal2lkit and pi-DoMUS for my application (I have been in contact with @asartori86 ). I have always pictured being able to initialize the solution from a previously saved solution; and only recently have I dug into this part of my project. I really only need to save a FEFieldFunction; but I'm finding it impossible (after digging through the deal.II mailing list and documentation) to deserialize the required components (Triangulation, DoFHandler, and Trilinos vector).

Some more background: I am plugging this PDE solver (presently just your Poisson problem, but hopefully soon to be one of our own models implemented as a pi-DoMUS interface) into a larger multidisciplinary framework, and I need to be able to continue the time dependent problem in a brand new program execution.

Anyway this appears to be a limitation of deal.II. Presently I only need to serialize deal.II specific data; but if I could save/load an entire pi-DoMUS, that would also solve my problem, and I am sure it would ultimately be more useful.