[Dune] Preconditioners

[Alex Evanovic]

Hi,

I have a strange observation! I use the ILUn preconditioner to solve my
problem & I get good results.

But, if I use SeqSOR, SeqSSOR, SeqGS, SeqJac when I try to execute my
program I get segmentation fault.

Could someone please point out the reason? Is it specific to my problem? Or
can happen due to preconditioner?

Regards,
Alex
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