On Tue, Aug 26, 2008 at 5:02 AM, Tim Kroeger
<[EMAIL PROTECTED]> wrote:
> Dear John,
>
> On Mon, 25 Aug 2008, John Peterson wrote:
>
>> On Mon, Aug 25, 2008 at 8:28 AM, Tim Kroeger
>
>>> Would you please be so kind and check that changes in (provided you like
>>> them)?
>>
>> I'll take a look at this patch today. Thanks!
>
> So, what was the result of looking at the patch?
I'm not sure about your implementation of L_INF. You're taking
||e||_{\infty} = max_q |e(x_q)|
where x_q are the quadrature points. In fact, isn't the solution
sometimes superconvergent at the quadrature points, and therefore this
approximation could drastically under-predict the L-infty norm? I
don't know of an efficient, simple algorithm for estimating L-infty
error ... perhaps there is something out there?
My preference would be to leave out the L_INF calculation rather than
return a potentially wrong value, but I would like the other
developers (esp. Roy, who is on holiday now) to comment as well.
--
John
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Libmesh-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/libmesh-users
