llvm dev - Mar 2009 - [LLVMdev] OT: Python on LLVM

Hi,

Slightly off-topic (as it's not directly about using or developing LLVM):

http://code.google.com/p/unladen-swallow/wiki/ProjectPlan

"Our long-term proposal is to replace CPython's custom virtual machine
with a JIT built on top of LLVM, while leaving the rest of the Python
runtime relatively intact."

Just curious, has anyone here heard more about this project?

Regards,
Paul

P.S. If I'd heard about this just 6 days later (e.g. Aprils Fools) I
wouldn't have believed it, especially with that project name. There's
just
something weird about suddenly finding a project that's obviously been
going on for some time (the roadmap is very detailed and they have initial
working code), while I spend quite some time on Python and LLVM related
lists and never saw a reference to it.

On Thu, Mar 26, 2009 at 9:20 AM, Paul Melis <llvm at
assumetheposition.nl>wrote:
> Slightly off-topic (as it's not directly about using or developing
LLVM):
>
> http://code.google.com/p/unladen-swallow/wiki/ProjectPlan
>
> "Our long-term proposal is to replace CPython's custom virtual
machine
> with a JIT built on top of LLVM, while leaving the rest of the Python
> runtime relatively intact."
>
> Just curious, has anyone here heard more about this project?

On the project home page, there is a pointer to a Google Group:
http://groups.google.com/group/unladen-swallow/
You can read the archives for more info and ask any questions you may have
of the authors there.

Misha
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On Thu, Mar 26, 2009 at 8:20 AM, Paul Melis <llvm at assumetheposition.nl>
wrote:
> Hi,
>
> Slightly off-topic (as it's not directly about using or developing
LLVM):
>
> http://code.google.com/p/unladen-swallow/wiki/ProjectPlan
>
> "Our long-term proposal is to replace CPython's custom virtual
machine
> with a JIT built on top of LLVM, while leaving the rest of the Python
> runtime relatively intact."
>
> Just curious, has anyone here heard more about this project?
You found it just as I was typing an introduction email :) I'm the
tech lead for Unladen Swallow, and we just announced our plans
yesterday at the PyCon VM summit. Our intention is to replace
CPython's eval loop with a JIT based on LLVM. We're still fairly
early-on in our work, focused on just getting a basic, slow
implementation working on top of LLVM. We'll start making it fast in
Q3 and beyond. I'm sure we'll be back with lots of questions, and
hopefully contributions :)

Our mailing list is unladen-swallow at googlegroups.com, and we're happy
to answer any questions about our project plan on that list.
> P.S. If I'd heard about this just 6 days later (e.g. Aprils Fools) I
> wouldn't have believed it, especially with that project name.
There's just
> something weird about suddenly finding a project that's obviously been
> going on for some time (the roadmap is very detailed and they have initial
> working code), while I spend quite some time on Python and LLVM related
> lists and never saw a reference to it.
We didn't want to announce when all we had was vapor. Our 2009Q1
release is a collection of tweaks to CPython (to give a quick
performance boost to existing applications), and we've just now begun
on the LLVM work. We still have a long way to go.

Collin Winter

Collin Winter wrote:
> On Thu, Mar 26, 2009 at 8:20 AM, Paul Melis <llvm at
assumetheposition.nl> wrote:
>   
>> Hi,
>>
>> Slightly off-topic (as it's not directly about using or developing
LLVM):
>>
>> http://code.google.com/p/unladen-swallow/wiki/ProjectPlan
>>
>> "Our long-term proposal is to replace CPython's custom virtual
machine
>> with a JIT built on top of LLVM, while leaving the rest of the Python
>> runtime relatively intact."
>>
>> Just curious, has anyone here heard more about this project?
>>     
>
> You found it just as I was typing an introduction email :) I'm the
> tech lead for Unladen Swallow, and we just announced our plans
> yesterday at the PyCon VM summit. Our intention is to replace
> CPython's eval loop with a JIT based on LLVM. We're still fairly
> early-on in our work, focused on just getting a basic, slow
> implementation working on top of LLVM. We'll start making it fast in
> Q3 and beyond. I'm sure we'll be back with lots of questions, and
> hopefully contributions :)
>
> Our mailing list is unladen-swallow at googlegroups.com, and we're
happy
> to answer any questions about our project plan on that list.
>
>   
>> P.S. If I'd heard about this just 6 days later (e.g. Aprils Fools)
I
>> wouldn't have believed it, especially with that project name.
There's just
>> something weird about suddenly finding a project that's obviously
been
>> going on for some time (the roadmap is very detailed and they have
initial
>> working code), while I spend quite some time on Python and LLVM related
>> lists and never saw a reference to it.
>>     
>
> We didn't want to announce when all we had was vapor. Our 2009Q1
> release is a collection of tweaks to CPython (to give a quick
> performance boost to existing applications), and we've just now begun
> on the LLVM work. We still have a long way to go.
>   
I just reread my PS and want to apologize for sounding so blunt. I think
it's a great project and hope you can achieve all your ambitious goals!

Regards,
Paul