[Dune] Problem with CG Solver

[S. Swayamjyoti]

Hi Dune,

I am solving a Ax = b system with the dune CG solver. I somehow find that,
the residual is very high (order of 10^38) & not zero! I run the solver
with verbosity 2, & I find that the "defect" of the system is also non-zero
& of very high order (~ 10^40).

Can someone please tell me the reason?

Regards,
Swayam
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