Re: [Libmesh-devel] Partition-agnostic parallel EquationSystem restart files

[Roy S. <roy...@ic...>]

On Fri, 30 Nov 2007, Benjamin Kirk wrote:

>> On the other hand, it would be better if we could make the default
>> behavior more user-friendly.  Instead of testing for the presence of a
>> --read_legacy command line switch, why can't we test for the absense
>> of that new version line at the beginning of the file?
>
> Probably do-able...

No rush, but I think that before putting out a 0.7.0 release we should
be backwards compatible with our old files without command line
options, and even before putting out a 0.6.9 release we should at
worst die with an informative error message when trying to read an old
restart file without the right command line option.

>> Based on the changes I had to make for ParallelMesh, I don't think
>> any numbering counts as "invalid" anymore unless it's actually
>> non-contiguous, and even that only breaks on some of our output code.
>
> This is non-contiguous, which only breaks when using e.g mesh.elem(e)
> instead of iterators -- which isn't too bad of a restriction.

Not for most code, no.  The only things I remember breaking with
non-continuous ids are some of the I/O classes, although I wouldn't
really trust the error estimator classes on noncontiguous ids either.
---
Roy