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From: | Stefan Israelsson Tampe |
Subject: | Re: Python-on-guile |
Date: | Sun, 25 Apr 2021 10:46:28 +0200 |
Guile is 3x faster then fastest python-on-guile which is 2x faster then python3 Cpythonattached is a guile corresponding program.On Sat, Apr 24, 2021 at 4:41 PM Stefan Israelsson Tampe <stefan.itampe@gmail.com> wrote:To note is that 'continue' is killing performance for python-on-guile programs, so by changing thecode to not use continue lead to python-on-guile running twice the speed of python3. The reason is thatthe while loop is used as(while (...)(let/ec continue...))And the let/ec is probably not optimally compiled. Python-on-guile will check the loop for continue usage and if not then it will skip the let/ec.I attached the code not using continueOn Sat, Apr 24, 2021 at 2:59 PM Stefan Israelsson Tampe <stefan.itampe@gmail.com> wrote:Actually changing in (language python compile),(define (letec f)(let/ec x (f x))))To(define-syntax-rule (letec f)(let/ec x (f x))))Actually lead to similar speeds as python3.On Sat, Apr 24, 2021 at 1:26 PM Stefan Israelsson Tampe <stefan.itampe@gmail.com> wrote:Pro tip, when running this on guile the scheme code that it compilse to is located in log.txt.If you ,opt the resulting code in a guile session you might be able to pinpoint issues thatdelays the code execution.On Sat, Apr 24, 2021 at 12:04 PM Mikael Djurfeldt <mikael@djurfeldt.com> wrote:(I should perhaps add that my script doesn't benchmark the object system but rather loops, conditionals and integer arithmetic.)Den fre 23 apr. 2021 17:00Mikael Djurfeldt <mikael@djurfeldt.com> skrev:Hi,Yesterday, Andy committed new code to the compiler, some of which concerned skipping some arity checking.Also, Stefan meanwhile committed something called "reworked object system" to his python-on-guile.Sorry for coming with unspecific information (don't have time to track down the details) but I noticed that my benchmark script written in Python, and which computes the 20:th Ramanujan number, now runs 60% faster than before these changes.This means that python-on-guile running on guile3 master executes python code only 2.6 times slower than the CPython python3 interpreter itself. :-)Have a nice weekend all,Mikael
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