Hello,

On Tue, 1 Dec 2020 19:09:28 +0000
David Mertz <me...@gnosis.cx> wrote:

> There exist TWO highly successful, widely used, JIT compilers for
> Python. PyPy and Numba. Neither one of them would have any use
> whatsoever for this constantness.

Of course not. What PyPy needed were European Commission grants,
nothing else. Numba needed a lot of corporate backing for sure too, but
they also needed LLVM bindings. So they picked some guy's module. Then
they threw it away, because it was hard to maintain, and made their
own. While LLVM has always shipped Python bindings. That's absolutely
normal, but shows there's a lot of "random betting" happens even in
"highly successful" projects.

But most importantly, I'm not interested in survivorship bias. I'm not
much interested to know how to write million-dollar JIT projects,
because heck, that's known for decades. I'm interested to know how to
NOT write "million-dollar" JIT projects, and why Unladen Swallow,
Pyston failed. I'm also interested to know how to write JIT projects
which do NOT cost millions of dollars.

All that is quite an unusual hobby, you bet.

> Or if you believe otherwise, get a
> developer of one of those to comment so.  JIT'd Python simply is not
> slow, even compared to compiled languages. 

Yeah! It's just don't work for stuff you need in a way you need, and too
bloated, so when you want to fix it, you can't.

> Searching for
> maybe-possibly-someday optimizations while ignoring the actual speed
> paths, is silly.

Exactly interested in low-hanging optimizations. Much less interested in
approaches like "we'll feed in some random crap, and LLVM will take
care of it".


So, hopefully, the motivation is clear - I'm doing this stuff, because
it's so obvious thing to do, and the guys who got the same idea
in 2001 or so, didn't seem to have left tangible artifacts beyond
deadlocked PEPs.


> 
> But I'll be moderate and only vote -100, 10x less negative than Paul
> Moore and Chris Angelico :-).

[]

-- 
Best regards,
 Paul                          mailto:pmis...@gmail.com
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