Hi all,
Sorry for the spamming. I hope this will be of interest to some of you.
Armin
==
PyPy 1.0: JIT compilers for free and more
==
Welcome to the PyPy 1.0 release - a milestone integrating the results
of four years of research, engineering, management and sprinting
efforts, concluding the 28 months phase of EU co-funding!
Although still not mature enough for general use, PyPy 1.0 materializes
for the first time the full extent of our original vision:
- A flexible Python interpreter, written in RPython:
- Mostly unaware of threading, memory and lower-level target platform
aspects.
- Showcasing advanced interpreter features and prototypes.
- Passing core CPython regression tests, translatable to C, LLVM and .NET.
- An advanced framework to translate such interpreters and programs:
- That performs whole type-inference on RPython programs.
- Can weave in threading, memory and target platform aspects.
- Has low level (C, LLVM) and high level (CLI, Java, JavaScript) backends.
- A **Just-In-Time Compiler generator** able to **automatically**
enhance the low level versions of our Python interpreter, leading to
run-time machine code that runs algorithmic examples at speeds typical
of JITs!
Previous releases, particularly the 0.99.0 release from February,
already highlighted features of our Python implementation and the
abilities of our translation approach but the **new JIT generator**
clearly marks a major research result and gives weight to our vision
that one can generate efficient interpreter implementations, starting
from a description in a high level language.
We have prepared several entry points to help you get started:
* The main entry point for JIT documentation and status:
http://codespeak.net/pypy/dist/pypy/doc/jit.html
* The main documentation and getting-started PyPy entry point:
http://codespeak.net/pypy/dist/pypy/doc/index.html
* Our online play1 demos showcasing various Python interpreters,
features (and a new way to program AJAX applications):
http://play1.codespeak.net/
* Our detailed and in-depth Reports about various aspects of the
project:
http://codespeak.net/pypy/dist/pypy/doc/index-report.html
In the next few months we are going to discuss the goals and form of
the next stage of development - now more than ever depending on your
feedback and contributions - and we hope you appreciate PyPy 1.0 as an
interesting basis for greater things to come, as much as we do
ourselves!
have fun,
the PyPy release team,
Samuele Pedroni, Armin Rigo, Holger Krekel, Michael Hudson,
Carl Friedrich Bolz, Antonio Cuni, Anders Chrigstroem, Guido Wesdorp
Maciej Fijalkowski, Alexandre Fayolle
and many others:
http://codespeak.net/pypy/dist/pypy/doc/contributor.html
What is PyPy?
Technically, PyPy is both a Python interpreter implementation and an
advanced compiler, or more precisely a framework for implementing dynamic
languages and generating virtual machines for them.
The framework allows for alternative frontends and for alternative
backends, currently C, LLVM and .NET. For our main target C, we can
can mix in different garbage collectors and threading models,
including micro-threads aka Stackless. The inherent complexity that
arises from this ambitious approach is mostly kept away from the Python
interpreter implementation, our main frontend.
PyPy is now also a Just-In-Time compiler generator. The translation
framework contains the now-integrated JIT generation technology. This
depends only on a few hints added to the interpreter source and should
be able to cope with the changes to the interpreter and be generally
applicable to other interpreters written using the framework.
Socially, PyPy is a collaborative effort of many individuals working
together in a distributed and sprint-driven way since 2003. PyPy would
not have gotten as far as it has without the coding, feedback and
general support from numerous people.
Formally, many of the current developers were involved in executing an
EU contract with the goal of exploring and researching new approaches
to language and compiler development and software engineering. This
contract's duration is about to end this month (March 2007) and we are
working and preparing the according final review which is scheduled
for May 2007.
For the future, we are in the process of setting up structures to help
maintain conceptual integrity of the project and to discuss and deal
with funding opportunities related to further PyPy sprinting and
developments. See here for results of the discussion so far:
http://codespeak.net/pipermail/pypy-dev/2007q1/003577.html
1.0.0 Feature highlights
==
Here is a summary list of key features included in PyPy 1.0:
- The Just-In-Time compiler generator, now capable of generating the
first JIT
