dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Saturday 06 February 2010 14:01:23 Anders Logg wrote:
> 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?

Already did and it is this that leaks.

Johan

> --
> 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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