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skip to main content overview download docs support support mailing list bug tracker donations about / contact tags nuitka this week #5 2018-08-24 12:55 comments contents goto generators benchmarks holiday static compilation twitter hotfixes bug tracker issue backlog help wanted plans donations goto generators finished. done. finally. bechmarking was exciting. one program benchmark i had run in the past, was twice as fast than before, showing that the new implementation is indeed much faster, which is fantastic news. creating generator expressions and using them both got substantially faster and that is great. it took me a fair amount of time to debug coroutines and asyncgen based on the new goto implementation. but the result is really good, and a fair amount of old bugs have been fixed. there always had been a segfault with asyncgen test that now has been eradicated. one major observation is now, with only one c stack, debugging got a lot easier before, where context switches left much of the program state not reachable. benchmarks posted this one twitter already: nuitka speedcenter builtin sum with generator that one construct test has been a problem child, where nuitka was slower than cpython 2.x, and very little faster than 3.x, and now with goto generators finally has become consistently faster. i will explain what you see there in the next issue. the short version is that there is code, in which for one run, one line is used, and in another the other line is used, and then the "construct" is measure that way, by making the delta of the two. that construct performance is then compared between python and nuitka. so if e.g. nuitka is already better at looping, that won't influence the number of making that sum call with a generator expression. the alternative line uses the generator expression, to make sure the construction time is not counted. to measure that, there is another construct test, that just creates it. nuitka speedcenter generator expression creation this one shows that stable nuitka was already faster at creating them, but that the develop version got even faster again. as creating generator objects became more lightweight, that is also news. there are constructs for many parts of python, to shed a light on how nuitka fares for that particular one. holiday in my 2 weeks holiday, i will try and focus on the next big thing, c types, something also started in the past, and where recent changes as part of the heap storage, should make it really a lot easier to get it finished. in fact i don't know right now, why my bool experimental work shouldn't just prove to be workable. i am not going to post a twn issue next week, mostly because my home servers won't be running, and the static site is rendered on one of them. of course that would be movable, but i won't bother. i am going to post a lot on twitter though. static compilation there is a github issue where i describe how pyenv on macos ought to be possible to use, and indeed, a brave soul has confirmed and even provided the concrete commands. all it takes now is somebody to fit this into the existing caching mechanism of nuitka and to make sure the static library is properly patched to work with these commands. now is anyone of you going to create the code that will solve it for good? twitter follow me on twitter if you like, i will post important stuff as it happens there: follow @kayhayen and lets not forget, having followers make me happy. so do re-tweets. hotfixes and there have been yet again more hotfixes. some are about coroutine and asyncgen corruptions for closes of frames. multiprocessing plugin on windows will work in all cases now. noteworthy was that the "0.5.32.6" was having a git merge problem on the cherry-pick that git didn't tell me about, leading to crashes. that made it necessary to push an update right after. i was confused that i didn't get a conflict, because there was one. but i am to blame for not checking the actual diff. bug tracker the next release will make github the official tracker for nuitka issues. i am working down the issues on the old tracker. the web site already pointed users there for a while, and i was set on this for some time, but yesterday i focused on taking action. basically what won me over is the easier templating of issues and pull requests that would have been possible with roundup, but never happened. also the openid integration that bugs.python.org has, never became available to me in a ready usable form. issue backlog finishing goto "generators allowed" for around 10 issues to be closed alone, and i went over things, and checked out some stale issues, to see if they are dealt with, or pinging authors. i spent like half a day on this, bring down the issue count by a lot. tedious work, but must be done too. also my inbox got a fair amount of cleanup, lots of issues pile up there, and from time to time, i do this, to get things straight. i raised issues for 2 things, that i won't be doing immediately. but actually as issues go, there really very little problematic stuff open right now, and nothing important really. i would almost call it issue clean. help wanted if you are interested, i am tagging issues help wanted and there is a bunch, and very like one you can help with. nuitka definitely needs more people to work on it. plans the goto generator work could be released, but i want to make the compile all the world test before i do so. it is running right now, but i will not complete before i leave. also i do not want to get regression reports in my holiday, and goto generators along with heap storage, mean there could be some. i am going to work on c types now. there is a few closing down actions on what i observed doing goto generators. there are a few easy ways to get even slightly better performance, definitely smaller code out of generators. not sure if i go there first, or for the c types work directly. i often like to get these kind of observations dealt with more immediately, but i don't want to spend too much quality time on it. donations as i have been asked this, yes, you can donate to nuitka if you wish to further its development. go here: donate to nuitka nuitka this week #4 2018-08-17 14:55 comments contents goto generators tox plugin twitter hotfixes plans goto generators this continues twn #3 where i explained what is all about. good news is, at the time python2 generators were largely working with the new ways, in the mean time not only did all of the python 2.7 test suite pass with goto generators, also did the python 3.4 test suite, i.e. also the yield from is working with it. the way it was done is to set m_yieldfrom in generators, and then to enter a state, where the code will only be resumed, when that sub-generator that currently it is yielding from, is finished. that makes it very much like normal yield. in fact, code generation is hardly different there. since the whole purpose is to get rid of make/get/setcontext , the next stop is coroutines. they have async for , async with and await but at the end of the day, the implementation comes down to yield from really with only a lot of sugar applied. right now, i am debugging "goto coroutines". it's hard to tell when it will be finished, and then asyncgen will be waiting still. this is easily the largest change in a long time, esp. due to the heap storage changes that i already discussed. one this is finished, i expect to turn towards c types with relative ease. tox plugin anthony shaw took on tox and nuitka and created a plugin that allows using nuitka. i am still wrapping my head around these things. it's only a proof of concept yet. i will give it more coverage in the future. twitter follow me on twitter if you like, i will: follow @kayhayen hotfixes so there have even more hotfixes. one addresses memory leaks found with the yield from while i was adding tests. usually if i encounter an old issue that has a small fix, that is what i do, push out a hotfix using

URL analysis for nuitka.net

http://www.nuitka.net/posts/nuitka-this-week-4.html#tox-plugin
http://www.nuitka.net/index-13.html
http://www.nuitka.net/posts/nuitka-this-week-4.html#disqus_thread
http://www.nuitka.net/posts/nuitka-this-week-1.html#plans
http://www.nuitka.net/categories/nuitka.html
http://www.nuitka.net/posts/nuitka-release-0528.html
http://www.nuitka.net/posts/nuitka-this-week-1.html#coroutine-compatibility
http://www.nuitka.net/posts/nuitka-this-week-5.html#benchmarks
http://www.nuitka.net/posts/nuitka-this-week-1.html#locals-dict
http://www.nuitka.net/posts/nuitka-this-week-3.html#id3
http://www.nuitka.net/categories/quiz.html
http://www.nuitka.net/posts/nuitka-this-week-3.html#goto-generators
http://www.nuitka.net/posts/nuitka-this-week-1.html#python-3-7
http://www.nuitka.net/posts/nuitka-this-week-2.html#python-3-7
http://www.nuitka.net/pages/impressum.html

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Domain Name: NUITKA.NET
Registry Domain ID: 1671973209_DOMAIN_NET-VRSN
Registrar WHOIS Server: whois.your-server.de
Registrar URL: http://www.hetzner.de
Updated Date: 2017-10-14T08:32:04Z
Creation Date: 2011-08-14T12:52:39Z
Registry Expiry Date: 2018-08-14T12:52:39Z
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Registrar IANA ID: 828
Registrar Abuse Contact Email: [email protected]
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Domain Status: ok https://icann.org/epp#ok
Name Server: NS.SECOND-NS.COM
Name Server: NS1.YOUR-SERVER.DE
Name Server: NS3.SECOND-NS.DE
DNSSEC: unsigned
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