On Thu, Jun 22, 2017 at 5:19 PM, Vikram Garg <vikram.v.g...@gmail.com>
wrote:

> Hello Laura,
>                    IIRC, the exact solution class is to enable comparisons
> of a numerical solution with an analytic solution. Since you are seeking to
>

The meshdiff.C app is intended for exactly the purpose it's being used for
here.


However, when the L2 and H1 errors are printed on screen, they are the very
> same as the norm of the solution on the fine mesh.


This definitely sounds like a bug, but I'm not sure what it might be off
the top of my head.

Some questions:

1. Does the meshdiff.C program work for your case as-is? Does it give the
same (wrong) result?
2. Are you sure about the system and variable names in
the exact_sol.compute_error() call?
3. Are you sure about the variable indexes for both systems? It looks like
they are hard-coded to 0 in the calculate_norm() calls...
4. Would it be possible for you to share the data files somehow so we can
try to reproduce the issue?


-- 
John
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