dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Friday 12 February 2010 13:06:00 Garth N. Wells wrote:
> Garth N. Wells wrote:
> > I've tracked a leak in the Python interface down to the line:
> >
> >   # Initialize base class
> >   cpp.Form.__init__(self, self._compiled_form, self.function_spaces,
> > self.coefficients)
> >
> > on line 46 of form.py. If I do
> >
> >   cpp.Form.__init__(self, self._compiled_form, self.function_spaces, [])
> >
> > then there is no observable leak. Any ideas? I checked dolfin::Form it
> > it looks ok. I even commented out all code in the dolfin::Form
> > constructor to be sure.
> 
> Could the problem be in the SWIG wrapper for std::vector? The line
> 
>     res = SWIG_ConvertPtrAndOwn(py_item, &itemp,
> $descriptor(dolfin::TYPE *), 0, &newmem);
> 
> looks suspicious. Johan?

I can have a look at it. I see that you have reported a bug.

Johan

> Garth
> 
> > Below is the script that I've been testing with.
> >
> > Garth
> >
> >
> > from dolfin import *
> > parameters["form_compiler"]["cpp_optimize"] = True
> > parameters["form_compiler"]["optimize"] = True
> > mesh = UnitSquare(16, 16)
> > for t in xrange(20000):
> >     for level in xrange(100):
> >         V  = FunctionSpace(mesh, "CG", 1)
> >         v  = TestFunction(V)
> >         u  = Function(V)
> >         u0 = Function(V)
> >         L = v*(u-u0)*dx
> >         b = assemble(L)
> >     print "----"
> >
> >
> >
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