dolfin team mailing list archive

[Johan Hake <hake.dev@xxxxxxxxx>]

So the number of nodes or the size of the nodes follows the number of
subspaces?

J

On 03/08/2013 10:36 AM, Garth N. Wells wrote:
> On 8 March 2013 09:27, Johan Hake <hake.dev@xxxxxxxxx> wrote:
>> Cool! How are the blocks determined?
>>
> 
> These are node blocks (not large equation blocks).
> 
> There is a primitive test in DofMapBuilder based on number of
> subspaces and global dimension. The idea is to work with nodes and not
> dofs (multiple nodes can live a a dof). This gives a major speed-up in
> dof renumbering and makes the solvers run faster. It should also speed
> up the sparsity pattern construction and the construction of
> distributed dof maps.
> 
> It would be good if UFC would provide some support for nodes. It's
> important for performance when multiple dofs live at each node.
> 
> Garth
> 
> 
> 
>> Johan
>>
>> On 03/08/2013 09:39 AM, noreply@xxxxxxxxxxxxx wrote:
>>> Merge authors:
>>>   Garth Wells (garth-wells)
>>> ------------------------------------------------------------
>>> revno: 7515 [merge]
>>> committer: Garth N. Wells <gnw20@xxxxxxxxx>
>>> branch nick: trunk
>>> timestamp: Fri 2013-03-08 08:38:47 +0000
>>> message:
>>>   Merge work on block dofmaps. Works in serial.
>>> modified:
>>>   dolfin/fem/DofMap.cpp
>>>   dolfin/fem/DofMap.h
>>>   dolfin/fem/DofMapBuilder.cpp
>>>
>>>
>>> --
>>> lp:dolfin
>>> https://code.launchpad.net/~dolfin-core/dolfin/trunk
>>>
>>> Your team DOLFIN Core Team is subscribed to branch lp:dolfin.
>>> To unsubscribe from this branch go to https://code.launchpad.net/~dolfin-core/dolfin/trunk/+edit-subscription
>>>
>>
>>
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