I'm still trying to understand what is broken in the xda IO. And is
this the same format as .xdr ? Is the mesh not written out properly or
is it not converging to the right solution ? I do not have two version
of libmesh enabled and disabled with Hilbert but am curious to know
what is failing in ex10 though.

I did a grep on the source files and Hilbert is called only for
sorting indices in Utility apart from the global_indices() routine.
That seems harmless enough to not cause any problems in the absence of
Hilbert. Or may be I missed something else here...

On Fri, Nov 20, 2009 at 11:38 AM, Roy Stogner <[email protected]> wrote:
>
> On Thu, 19 Nov 2009, Kirk, Benjamin (JSC-EG311) wrote:
>
>>> I was testing on 4, but from what I saw in Marro's test case, *one*
>>> processor will do it.  It just takes one or two adaptive steps to
>>> trigger it too; I think I changed n_timesteps from 25 to 5 in ex10.
>>> Like I said, something is *seriously* wrong with our .xda I/O now...
>>
>> I just built trunk and enabled libHilbert, and vanilla ex10 runs fine on
>> one, two, three, and four processors (?)  I'm not getting something...
>
> Likewise: things work fine (for ex10) with libHilbert enabled.
>
> It appears that Marro's code was getting caught by multiple separate
> failures: one (which didn't catch ex10, but which in his test case
> still triggers an assertion error with libHilbert enabled) from the
> libHilbert collision bug, another (which kills ex10 too) from some bug
> in --disable-libHilbert, and another (which doesn't touch ex10) with
> --enable-libHilbetr but global renumbering commented out, which
> doesn't trigger an assertion failure but which does cause corrupt I/O
> after ~10 AMR steps.
>
> I'm reenabling libHilbert by default for now, reverting us back to
> "seriously broken" from "completely broken"...  Gotta run for now;
> I'll get back to this in a couple hours.
> ---
> Roy
>
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