Exact solution mismatch should print a loud warning message

[inducer]

Currently (b2c9a41), at least in vortex-mpi, it just swallows the exception. Possibly, this message could be printed by advance_state, to assure that something shows up.

[MTCam]

I think I liked my previous solution which failed on all ranks simultaneously, and printed a solution mismatch message. Regardless, it was replaced by this exception at some point - which has the problem you note, and can also cause the simulation to hang when some ranks exit and some don't.

Can we not just print the message when the exception is caught?

[inducer]

Can we not just print the message when the exception is caught?

We can't count on driver maintainers to get this right IMO.

can also cause the simulation to hang when some ranks exit and some don't.

No, cf. #115. (cc @matthiasdiener)

[MTCam]

Can we not just print the message when the exception is caught?

We can't count on driver maintainers to get this right IMO.

can also cause the simulation to hang when some ranks exit and some don't.

No, cf. #115. (cc @matthiasdiener)

Totally agree. I did not realize the lone exit issue was fixed by #115. Cool!