Hi Nathaniel,
On 22/10/2020 7:36 am, Nathaniel Smith wrote:
Hi Mark,
This sounds really cool. Can you give us more details? Some questions
that occurred to me while reading:
- You're suggesting that the contractor would only be paid if the
desired 50% speedup is achieved, so I guess we'd need some objective
Python benchmark that boils down to a single speedup number. Did you
have something in mind for this?
- How much of the work has already been completed?
A fair bit of stage 1, and much research and design for the later stages.
- Do you have any preliminary results of applying that work to that
benchmark? Even if it's preliminary, it would still help a lot in making
the case for this being a realistic plan.
Getting a PGO/LTO comparison against 3.10 is tricky.
Mainly because I'm relying on merging a bunch of patches and expecting
it to work :)
However, on a few simple benchmarks I'm seeing about a 70% speedup vs
master for both default and LTO configures.
I would expect a lower speedup on a wider range of benchmarks with a
PGO/LTO build. But 50% is definitely achievable.
Cheers,
Mark.
-n
On Tue, Oct 20, 2020 at 6:00 AM Mark Shannon <[email protected]
<mailto:[email protected]>> wrote:
Hi everyone,
CPython is slow. We all know that, yet little is done to fix it.
I'd like to change that.
I have a plan to speed up CPython by a factor of five over the next few
years. But it needs funding.
I am aware that there have been several promised speed ups in the past
that have failed. You might wonder why this is different.
Here are three reasons:
1. I already have working code for the first stage.
2. I'm not promising a silver bullet. I recognize that this is a
substantial amount of work and needs funding.
3. I have extensive experience in VM implementation, not to mention a
PhD in the subject.
My ideas for possible funding, as well as the actual plan of
development, can be found here:
https://github.com/markshannon/faster-cpython
I'd love to hear your thoughts on this.
Cheers,
Mark.
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Nathaniel J. Smith -- https://vorpus.org <http://vorpus.org>
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