[pypy-dev] Build Pypy with different Interpreters

[Jan Brohl]

Sorry, for the typo - I was asking if it is possible to build pypy 
*with* different interpreters instead of just cpython and pypy.

(using eg "ipy64" instead of "pypy" or "python" in the translation step 
described at
http://doc.pypy.org/en/latest/build.html#run-the-translation )


Am 08.09.2016 um 14:07 schrieb William ML Leslie:
> On 8 September 2016 at 19:40, Jan Brohl <janbrohl at t-online.de
> <mailto:janbrohl at t-online.de>>wrote:
>
>     Is it possible to build different interpreters like Stackless,
>     IronPython or Jython?
>
>
> ​That was actually the original motivation for creating pypy -
> maintaining all those different python implementations was a lot of
> unnecessary work.  ​Stackless support is enabled by default.  Support
> for translating to CLI and the JVM was eventually dropped for lack of
> interest.  If someone wanted to re-add that support, they could learn
> from the mistakes that the previous implementation used.
>
> http://doc.pypy.org/en/latest/stackless.html
>
>
>
>
>     If not - why?
>
>     If yes - is it (in theory) possible to gain a speedup on those
>     without GIL? (Is there multithreading at all the in translation
>     process?)
>
>
> ​Translation can't be done concurrently at the moment.  I probably
> should have expanded upon this in my previous email, and maybe I will;
> there are a number of global structures, registries, and work lists that
> would need to be refactored before the translation work could be
> distributed.  If that's the route the pypy team go, we will consider it
> ​after pypy itself supports parallelism.
>
> ​There's another route, which is to support separate compilation, and
> then to hand off the translation of built-in modules to different
> executors.​  This is itself quite a bit of work due to some inherent
> properties of rpython.
>
> --
> William Leslie
>
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