Re: [Libmesh-users] Visualizing libmesh ex10 results

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

On Mon, 15 Mar 2010, Cody Permann wrote:

> How do you handle the case when you have multiple "hybrid"
> subdomains.

My suggestion would handle that case; the case where it fails is what
you've pointed out:

> This is tricky since you could theoretically exhaust
> the number of subdomains with "pure" subdomains alone let alone
> generating new magic IDs for hybrid domains.

Yeah; dividing the number of available subdomains by the number of
possible element types is a serious limitation, especially if any
users are already doing bitmasking tricks and thereby creating higher
subdomain_ids faster.  Exodus uses a 32-bit block ID, right?  And we
use 12 of their element types; we might say 16 to leave some room for
expansion.  So our maximum "real" subdomain_id would be around 250
million; we'd have thrown away the top 4 bits.
---
Roy