dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sat, Aug 25, 2012 at 01:32:12PM +0200, Johan Hake wrote:
> Yes, I have seen that...
>
> I think we can do 1 of 2 thing.
>
>   1) append the relative path to dolfin_utils in the script, which
>      is an easy fix.
>
>   2) prevent running script from within the tree and for example place
>      them in:
>
>        utils/something

I think (2). I think I remember we decided at some point to put all
such scripts in cmake/scripts which already contants two
generate-scripts. I suggest putting the script there and naming it
generate-foo something.

--
Anders


> Johan
>
>
> On 08/25/2012 09:39 AM, Garth N. Wells wrote:
> > Looks like this has re-introduced an old bug. It's not possible to run
> > generateswigcode.py without DOLFIN being installed. This is a circular
> > dependency. I get
> >
> > Traceback (most recent call last):
> >   File "generateswigcode.py", line 32, in <module>
> >     from dolfin_utils.cppparser import *
> > ImportError: No module named dolfin_utils.cppparser
> >
> > Garth
> >
> > On 13 August 2012 09:51, Johan Hake <hake.dev@xxxxxxxxx> wrote:
> >> Hello!
> >>
> >> I have improved (hopefully!) the automatic generation of the SWIG
> >> interface of DOLFIN by reducing the size of the generated
> >> modulePYTHON_wrap.cxx file, with the result of using less memory during
> >> compilation of the individual modules. It now peaks at 650 MB instead of
> >> 1.2 GB. The reduced interface is accomplished by only importing and
> >> including the dependent dolfin types for each module. Previously we
> >> exposed the whole dolfin library to all modules.
> >>
> >> The reduced import is accomplished by parsing all .h files in the DOLFIN
> >> tree, and collecting dependencies. For this I used a python module
> >> called CppHeaderParser. It is released using BSD license and is included
> >> in dolfin_utils. I have worked together with Jashua Cloutier the
> >> developer of CppHeaderParser to make it parse the whole DOLFIN library.
> >>
> >> CppHeaderParser depends on ply.lex, which is distributed in debian in
> >> the python-ply package. So one either need to:
> >>
> >>   sudo apt-get install python-ply
> >>
> >> or
> >>
> >>   pip install ply
> >>
> >> using PyPI.
> >>
> >> JIT compilation of dolfin modules (Expressions and SubDomains) is also
> >> much faster now, as the JIT compiled DOLFIN code is parsed runtime and
> >> only dependent files are included or imported when the SWIG interface is
> >> generated. Running Expression.py unit test takes 42 s instead of 140 s.
> >>
> >> Not everything could be automated through the parsing, as the
> >> Hierarchical class with all its derived classes causes huge pain for
> >> SWIG. The pain was, however, overcome by two simple hacks in
> >> generateswigcode.py and compileextensionmodule.py.
> >>
> >> Regards,
> >>
> >> Johan
> >>
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