ffc team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Monday 01 February 2010 00:30:41 Anders Logg wrote:
> On Mon, Feb 01, 2010 at 09:18:17AM +0100, Anders Logg wrote:
> > On Sun, Jan 31, 2010 at 04:13:26PM -0800, Johan Hake wrote:
> > > On Sunday 31 January 2010 15:37:41 Garth N. Wells wrote:
> > > > Anders Logg wrote:
> > > > > On Sun, Jan 31, 2010 at 05:51:37PM +0000, Garth N. Wells wrote:
> > > > >> Anders Logg wrote:
> > > > >>> On Sun, Jan 31, 2010 at 04:57:36PM +0000, Garth N. Wells wrote:
> > > > >>>> Nearly all the DOLFIN demos are working again. The only
> > > > >>>> remaining issue appears to be the automatic selection of the
> > > > >>>> cell type for Expressions from the Python interface, see for
> > > > >>>> example the Python demo. If 'cell=triangle' is added to the
> > > > >>>> Expressions in the Python demo, it all looks good.
> > > > >>>>
> > > > >>>> Garth
> > > > >>>
> > > > >>> Should be fixed now.
> > > > >>>
> > > > >>> Which demos were failing? I checked Poisson 1D which works now.
> > > > >>
> > > > >> Poisson (2D) and a few others (while Poisson is broken, I don't
> > > > >> take much notice of the others which are broken), and some of my
> > > > >> solvers. Seems ok now.
> > > > >>
> > > > >> It would be useful if the representation would be printed to the
> > > > >> screen when using JIT.
> > > > >
> > > > > You can print it by decreasing the debug level. Just set the
> > > > > "log_level" option to INFO.
> > > > >
> > > > >> How do I control FFC options from PyDOLFIN?
> > > > >
> > > > > By passing an optional 'options' argument to assemble() or
> > > > > VariationalProblem:
> > > > >
> > > > >   A = assemble(a, options={"representation": "quadrature",
> > > > >                            "log_level": INFO})
> > > > >
> > > > > This was broken but it works again now. VariationalProblem didn't
> > > > > have an options argument before but I have added it. I have also
> > > > > renamed form_compiler_options --> options since it's shorter and
> > > > > there is no other options dictionary.
> > > >
> > > > Setting FFC parameters seems a but clunky. How can one set global
> > > > parameters (along the lines of 'parameters.optimize = True', which
> > > > does work at the moment), and how does one know what keys can go into
> > > > the options dictionary?
> > >
> > > I think this is done by design as PyDOLFIN should be able to use
> > > different form_compilers. The option dict should just be passed to the
> > > form_compiler using the options argument.
> > >
> > > It seems that parameter.optimize only deals with caching of tensors and
> > > that,
> > >
> > >    parameters.optimize_form
> > >    parameters.optimize_use_dof_map_cache
> > >
> > > do not do anything more?
> > >
> > > We could force the form_compiler to define a more verbal option
> > > interface, explaining the meaning of the different options, which then
> > > could be reached from PyDOLFIN?
> >
> > I'll see what I can do. It should be fairly easy to integrate the form
> > compiler options with the DOLFIN parameter system (without DOLFIN
> > needing to know about specific form compiler options).
> >
> > But one thing that bugs me is that it's called 'options' in FFC and
> > 'parameters' in DOLFIN. Is there some logic behind this or should we
> > try to make it uniform?
> 
> I'm renaming options --> parameters in FFC. Seems like the simplest
> solution (easier than renaming in DOLFIN).

:)

Johan

> --
> Anders
>