dolfin team mailing list archive

["Marie E. Rognes" <meg@xxxxxxxxx>]

Thanks for starting to take care of this Johan!

However, it does not completely resolve the issue for me:

Building the most recent 1.0.x and trunk on my laptop,
by clearing the build directory, and running cmake.local
gave the following (rough) timings for the Python stage:

1.0.x (aka 'old'): ~3 min 21 s
trunk (aka 'new'): ~ 3 min 23 s

These timings are for not doing anything else at the same
time except staring at the screen.

The 'new' still uses so much memory that doing
anything else at the same time is very painful.

--
Marie


On 02/01/2012 05:23 PM, Johan Hake wrote:
> Hello!
>
> I have now splitted the SWIG interface into 6 combined modules.
>
>    common, io, mesh, function, fem, la
>
> The largest .cxx file generated now is 2MB (for la with all linear algebra
> backends installed), instead of 6MB. That is still pretty big and take some
> 1GB of memory during compilation. But the interface can now be generated in
> several threads, reducing compile time considerable. The runtime memory print,
> read from a simple top, is not much more than before (some 100MB), which is
> good.
>
> They new compiled modules all resides under:
>
>    dolfin.cpp.foo
>
> All types and functions are now automatically included into:
>
>    dolfin.cpp
>
> which means that most modules under site-packages/dolfin still works fine.
> There are now more types included from the compiled interface by default. If
> this is a problem we can change that. But now everything is automated. No
> handpicking done.
>
> The logic in the new SWIG interface is described in:
>
>    dolfin/swig/README
>
> One thing to be aware of is that any reference to the compiled interface from
> another combined module have to be preluded with the name of the module.
> Example, in la/post.i we call dolfin_error, which is defined in common. Then
> we do:
>
>    common.dolfin_error(...)
>
> instead of previous:
>
>    dolfin_error(...)
>
> Have fun and let the bug reports come raining!
>
> Johan
>
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