ffc team mailing list archive

[Kristian Oelgaard <k.b.oelgaard@xxxxxxxxx>]

2009/12/16 Garth N. Wells <gnw20@xxxxxxxxx>


Anders Logg wrote:
> On Wed, Dec 16, 2009 at 07:16:08PM +0000, Garth N. Wells wrote:
>>
>> Anders Logg wrote:
>>> On Wed, Dec 16, 2009 at 06:54:54PM +0000, Garth N. Wells wrote:
>>>> Anders Logg wrote:
>>>>> Marie and I have had some discussions on the redesign and FFC and
>>>>> here's what came out:
>>>>>
>>>>>   https://blueprints.launchpad.net/ffc/+spec/ffc-redesign
>>>>>
>>>>> This allows us to remove both FiniteElement and DofMap since we won't
>>>>> be needing any of those in the code generation stage.
>>>>>
>>>> And where does the transition to the new FIAT fit in?
>>> It's quite orthogonal to that. We just need to make sure that we use
>>> the new FIAT interface in stage 2.
>>>
>>> Note that with this new design (which is really just a stricter
>>> and cleaner version of what I originally intended) FIAT will only be
>>> called in stage 2 which will make things easier.
>>>
>>> I will start on changing things from the top and down, starting with
>>> cleanups in compiler.py and then we can go from there.
>>>
>> I am completely confused by the strategy. We discussed moving the work
>> on the FIAT transition to lp:~ffc-core/ffc/dev, but now FiniteElement
>> has been removed and the message says that everything is broken. We to
>> have several things going on at once, none of which are working. Would
>> it be more sensible to make one thing at a time work? There seems to be
>> no clear plan.
>
> The redesign is difficult to do one step at a time. I would have liked
> to do it in careful steps but I don't see how.
>
> Here's a more detailed plan:
>
> 1. I rework compile.py tonight.
>

If the changes are so close, why is the target for the Blueprint release
0.9 (we're at 0.7.1 now)?

> 2. We make the compiler stages work again, one at a time.
>
> As part of step 2, we make sure that we
>
> a) Use the new FIAT interface
>
> b) Use the code Kristian has been working on for evaluate_basis
>

Kristian: what's the prognosis on this?

Hopefully I'll finish evaluate_basis tomorrow.

Kristian

 Garth

> --
> Anders



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