dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sat, Feb 06, 2010 at 09:42:19PM +0000, Garth N. Wells wrote:
> I'm trying to track down a nasty memory leak in a solver, and I've
> noticed an increase in memory use for the below code, which I didn't
> expect. It's not significant enough to explain the problems that I have,
> but I did expect that the below code should not leads to any increase in
> memory use. From a quick look, the memory use appears to come from
>
>     # JIT-compile element to get ufc_element and ufc_dofmap
>     ufc_element, ufc_dofmap = jit(self._ufl_element)

It might be related to caching of form data but it shouldn't since
that cache is explicitly turned off when compiling single elements.

Can you try printing the size of _form_data_cache inside jit.py in
FFC?

--
Anders


> Should this be expected?
>
> Garth
>
>
> from dolfin import *
>
> mesh = UnitSquare(2, 2, "crossed")
>
> for i in xrange(5):
>     for j in xrange(500):
>         BDM = FunctionSpace(mesh, "Brezzi-Douglas-Marini", 1)
>     raw_input("Check memory use and press ENTER to continue")
>     print ". . . .", i
>
>
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