Re: The status of JIT compiler of Guile (was: Guile benchmark)

[Chaos Eternal <eternalchaos@shlug.org>]

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On Thu, Mar 2, 2017 at 3:49 PM Nala Ginrut <nalaginrut@gmail.com> wrote:

> Hi folks!
> It's been a long time for me to be inactive here. ;-)
>
> I saw there's thread to discuss Guile benchmark, I think it's better
> to mention the JIT compiler of Guile. It exists and real, and of
> course, very fast.
>
> Thanks Atsuro Hoshino, who is the author of Guile JIT compiler.  We've
> met on ICFP2016 in Nara. And I'm great impressed by this work. I'm
> enjoying the contribution very much, especially when yesterday I made
> it work successfully!
>
> I think Atsuro is very busy these months, so that he has no time to
> take a look on my patches. After waited half a year, I decide to take
> the responsibility to maintain this project. I have to mention that
> JIT compiler is not in Guile upstream repo at present, it's maintained
> on GitHub.
>
> I've forked the repo and patched it to make it work, and rebased it to
> our latest master branch (2.1.7.980-f5904-dirty). Now it works on the
> latest Guile code base. I'lI keep on maintaining it before Atsuro come
> back to take it.
> My plan is to keep it updating with the latest Guile master branch,
> and try to fix problems, respond the issues, finally, when it becomes
> mature, I'll send patches-set to Guile upstream.
> Please come back soon, we need you, Atsuro ;-)
>
> Here's my repo, reports and patches are welcome, I prefer maintain it
> on GitHub, this will be easier for most of folks:
> ==============================
> https://github.com/NalaGinrut/guile-tjit
> ==============================
> Please follow nala-tjit branch which is maintaining by me.
>
> To build it , you need gnu-lightning, and you should add
> --enable-lightning when configure:
> ==============
> ./configure --enable-lightning
> ==============
>
> To run it with JIT, please add --tjit option:
> =================
> guile --tjit
> =================
>
> The JIT is still experimental, so please report if you encounter any
> problem, I'll try to help to fix it, and I'm here to invite
> contributors to help this significant project. Atsuro's paper is here:
> ===================
> http://scheme2016.snow-fort.org/static/scheme16-paper3.pdf
> ===================
>
> About the performance, I tried a poor test:
> ========code========
>  (define (fib n)
>    (define (iter a b c)
>      (cond ((= c 0) b)
>            (#t (iter (+ a b) a (- c 1)))))
>    (iter 1 0 n))
>
>  (define a (fib 1000000))
> =========end========
>
> It's not a fair test, and I'm a bad benchmarker, but it shows
> interesting result on my machine:
> Chez: 15s
> guile-master: 28s
> guile-jit: 15s
>
> Now you know it's different, huh?
> Come to get involved please, try it on your code, and report
> something, find bugs as possible. And let's pray it could be fixed
> automatically. ;-P
>
> Best regards.
>
>

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