Roy,

What kind of configure options would you like for this task.  It appears we 
don't have many argument based options but it makes sense for this case.

--subdomain-id-bytes=[1,2,4]

Alternatively we could put in separate options for each of these cases 
consistent with most of the existing options

--enable-subdomain-id-8
--enable-subdomain-id-16
--enable-subdomain-id-32

Cody


On Jun 2, 2011, at 9:56 AM, Roy Stogner wrote:

> 
> On Wed, 1 Jun 2011, Cody Permann wrote:
> 
>> subdomain_id_type impacts on Elem Size:
>> 
>> 8 bits: sizeof(Hex8) = 96
>> 16 bits: sizeof(Hex8) = 96
>> 32 bits: sizeof(Hex8) = 96
>> 64 bits: sizeof(Hex8) = 104  (just to verify)
> 
> One other minor thought: the lack of growth going from 16 to 32 bits
> makes it tempting to make 32 bits the default - however, if 16 bits is
> sufficient for you I'd like to stick with that (unless the user makes
> a configure-time decision to the contrary).  I still fantasize about
> adding anisotropic p adaptivity one day, and my various half-baked
> ideas for doing so would use up the rest of the padding bytes in the
> 16-bit-subdomain_id case or would tack another 8 bytes onto the
> structure in the 32-bit-subdomain_id case.
> ---
> Roy


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