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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/own-macosx-x86-32/builds/698 | 00:33 |
|---|---|---|
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| bbot2 | 3Success: 15http://buildbot.pypy.org/builders/jit-benchmark-linux-x86-64/builds/123 | 01:03 |
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| CIA-25 | 03Garen 07roundup * 10#691/pypy-head does not compile under Windows: | 01:16 |
| CIA-25 | FWIW, after completely uninstalling VS 2010, it no longer selects the wrong | 01:16 |
| CIA-25 | linker at the end, and translations (with pypy 1.5 or cpython _only_ ... * 14https://bugs.pypy.org/issue691 | 01:16 |
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| bbot2 | Started: 15http://buildbot.pypy.org/builders/own-linux-x86-32/builds/1817 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-64/builds/550 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-app-level-linux-x86-64/builds/597 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1078 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-Ojit-no-jit-linux-x86-32/builds/783 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-app-level-linux-x86-32/builds/1415 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/own-linux-x86-64/builds/682 | 01:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-win-x86-32/builds/248 | 01:48 |
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| bbot2 | 3Success: 15http://buildbot.pypy.org/builders/jit-benchmark-linux-x86-32/builds/926 | 02:38 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-win-x86-32/builds/248 | 02:57 |
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| bbot2 | 3Success: 15http://buildbot.pypy.org/builders/own-linux-x86-32/builds/1817 | 03:44 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-app-level-linux-x86-32/builds/1415 | 04:44 |
| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-Ojit-no-jit-linux-x86-32/builds/783 | 04:44 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-app-level-linux-x86-64/builds/597 | 04:58 |
| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1078 | 05:00 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-64/builds/550 | 05:15 |
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| bbot2 | 3Success: 15http://buildbot.pypy.org/builders/own-linux-x86-64/builds/682 | 06:24 |
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| fijal | morning | 07:13 |
| arigato | hi | 07:13 |
| kenaan | 12arigo default 11bfd8b80c9117 15/pypy/module/array/test/test_array.py: "Fix" this test. | 07:18 |
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| kenaan | 12arigo default 115e062fe507c3 15/lib_pypy/pyrepl/readline.py: Don't crash on reading or writing stuff to the history file if the encoding is wrong. Just fall back to utf-8, a k... | 07:26 |
| kenaan | 12arigo pyrepl 118f621e5d5cb7 15/pyrepl/readline.py: Port 5e062fe507c3 from pypy. | 07:27 |
| CIA-25 | 03arigo 07roundup * 10#922/1.6 crashes with time.sleep(negative_number): [resolved] Seems fixed, thank you. * 14https://bugs.pypy.org/issue922 | 07:28 |
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| kenaan | 12arigo default 116e0e3791ee99 15/lib_pypy/_pypy_irc_topic.py: Update the list of irc topics. I had to change details in the script that parses IRC topics, and I just noticed th... | 08:17 |
| CIA-25 | 03arigo 07roundup * 10#896/Bad quotation?: | 08:18 |
| CIA-25 | [resolved] I regenerated an up-to-date list and dropped the topic that you point out (and | 08:18 |
| CIA-25 | another very similar one). * 14https://bugs.pypy.org/issue896 | 08:18 |
| CIA-25 | 03arigo 07roundup * 10#894/Undefined symbol in PIL 1.7 on pypy 1.6: | 08:24 |
| CIA-25 | [chatting] Works for me on Linux. Is it a OS/X-only issue? Does it occur with any | 08:24 |
| CIA-25 | extension module, or only with PIL? * 14https://bugs.pypy.org/issue894 | 08:24 |
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| Action: arigato looks up in which obscure case we actually use the "expected_length" argument of unpack_iterable() | 08:58 | |
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| Action: arigato tries to add a jitdriver to unpackiterable(generator) | 10:39 | |
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| Action: arigato fights with jitviewer.py --- I don't think I've ever used jitviewer without having to fight | 11:48 | |
| Action: arigato gives up | 11:49 | |
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| kenaan | 12arigo default 1133adaaf2cc05 15/pypy/: Expand the code of unpackiterable() into several versions instead of keeping a single does-it-all version. | 11:52 |
| kenaan | 12arigo default 11894e6aa4bb16 15/pypy/interpreter/: Attempting to add a JitDriver to unpackiterable(generator). | 11:52 |
| kenaan | 12arigo default 111d8951851148 15/pypy/interpreter/baseobjspace.py: translation fix | 11:52 |
| kenaan | 12arigo default 110ffcdb4ec169 15/pypy/interpreter/baseobjspace.py: bah. | 11:52 |
| kenaan | 12arigo default 11f9317d8169dd 15/pypy/interpreter/generator.py: Tweaks. | 11:52 |
| kenaan | 12arigo default 11f908d360e53c 15/pypy/: Also use the same jitdriver for list(generator). | 11:52 |
| arigato | success: "ai" is now 3x faster | 11:53 |
| khs (~khs@2001:700:300:2120:725a:b6ff:fee5:a44) left irc: Ping timeout: 244 seconds | 11:53 | |
| arigato | I'll just suggest to write at least some coverage tests for jitviewer, so that we know it's basically working | 11:53 |
| Action: arigato -> lunch | 11:54 | |
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| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-macosx-x86-64/builds/250 | 12:14 |
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| Nick change: Gulaway -> Gulopine | 13:05 | |
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| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1079 [12arigo] | 13:05 |
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| fijal | arigato: did you remember that init__List have a copy of unpackiterable? | 13:42 |
| arigato | yes, fixed too in my last checkin | 13:43 |
| fijal | ok, good :) | 13:43 |
| fijal | do you really want to get 5x cake, eh? | 13:43 |
| fijal | also, we have more benchmarks these days | 13:43 |
| fijal | it might be less, if we run all previous versions of pypy-c | 13:44 |
| fijal | otherwise they don't show up | 13:44 |
| fijal | we can think a bit | 13:44 |
| Alex_Gaynor | fijal: since I won't be there, please take a picture of the 5x cake :) | 13:44 |
| Action: fijal travelling btw | 13:44 | |
| Action: Alex_Gaynor wishes we had a compteitor to send us cake like the IE team does for mozilla | 13:44 | |
| fijal | arigato: see you in gborg? | 13:44 |
| arigato | fijal: yes, I want the 5x cake :-) | 13:45 |
| Alex_Gaynor | Have you considered your own TV show? "WHere in the world is Maciej Fijalkowski" | 13:45 |
| fijal | I arrive tomorrow around 5pm | 13:45 |
| fijal | should I head to lac's place? | 13:45 |
| arigato | ok, yes | 13:45 |
| arigato | see you tomorrow at lac's place | 13:45 |
| fijal | hm, no | 13:45 |
| fijal | 18:45 | 13:45 |
| fijal | at the airport | 13:45 |
| fijal | anyway | 13:45 |
| arigato | ah, ok, see you here tomorrow anyway | 13:45 |
| fijal | I'll message anto and/or carl | 13:45 |
| fijal | in case you go away for dinner | 13:46 |
| arigato | carl is not coming | 13:46 |
| fijal | ah ok | 13:46 |
| fijal | would be nice if you can wait, but obviously not required | 13:46 |
| arigato | but anto should, and we're probably eating at lac's place | 13:46 |
| fijal | anyway, see you tomorrow | 13:46 |
| arigato | sure, good trip | 13:46 |
| fijal | I'll start traveling now :) | 13:46 |
| fijal | and now for something completely different - http://www.youtube.com/watch?v=zBiyTxQC2OE | 13:46 |
| arigato | :-) | 13:49 |
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| arigato | fwiw: https://bitbucket.org/arigo/arigo/raw/default/hack/3d/ | 13:52 |
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| arigato | updated this hack to do also floor and ceiling texturing | 13:52 |
| arigato | all while in cylindrical projection | 13:52 |
| arigato | and all in full-screen pure Python at a reasonable speed | 13:52 |
| arigato | (on pypy, not on cpython :-) | 13:53 |
| ronny | arigato: software renderer? | 13:53 |
| arigato | yes | 13:53 |
| ronny | i wonder if simplex11 can be done in ctypes | 13:54 |
| Alex_Gaynor | you should include some default images | 13:54 |
| arigato | a bit of a mess, because half the few functions it uses are macros | 13:54 |
| ronny | arigato: i wonder if pyxcb can do | 13:55 |
| arigato | Alex_Gaynor: maybe, yes | 13:55 |
| ronny | arigato: http://pyxb.sourceforge.net/ | 13:55 |
| ronny | ops dammit | 13:56 |
| ronny | i missread the docs on that one | 13:56 |
| arigato | ronny: I don't want to have to write pages of XML to avoid writing two pages of C | 13:56 |
| ronny | arigato: there was a pure python lib somewhere to do it | 13:57 |
| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1079 [12arigo] | 13:57 |
| ronny | (accessing x11 using the xcb stuff) | 13:57 |
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| Alex_Gaynor | arigato: oh noes :( http://buildbot.pypy.org/summary/longrepr?testname=modified&builder=pypy-c-jit-linux-x86-32&build=1079&mod=lib-python.modified-2.7.test.test_itertools | 13:57 |
| arigato | ronny: true, I remember it | 13:57 |
| ronny | forgot how to find it tho | 13:58 |
| arigato | Alex_Gaynor: indeed | 13:58 |
| ronny | is there any way to enforce a strategy on a list? | 13:59 |
| arigato | ronny: there is a very old library exposing the pure Python package "Xlib" | 13:59 |
| ronny | (i'd like to have only signed integers in a list) | 13:59 |
| Alex_Gaynor | ronny: no, especially given that list strategies haven't been merged :) | 13:59 |
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| ronny | Alex_Gaynor: in a most 2 months i ned at least integer as list strategy, so i can write an reasonably efficient algorithm for intersections of "sorted sets" of integers | 14:02 |
| Alex_Gaynor | ronny: why not juse use hte array module for now? | 14:02 |
| ronny | true | 14:03 |
| ronny | how good/bad are arrays for jit? | 14:03 |
| Alex_Gaynor | pretty good, at least if you allocate them in the correct size | 14:05 |
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| kenaan | 12arigo default 1114f9d8d50de2 15/pypy/interpreter/generator.py: Workaroundish fix for now: don't use green fields here. Using a regular green variable is easy enough and more tested. | 14:05 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1080 [12arigo] | 14:06 |
| ronny | Alex_Gaynor: i want to implement some kind of set intersection that works semilar to mergesort | 14:06 |
| arigato | ronny: http://python-xlib.sourceforge.net/ is what I had in mind | 14:06 |
| ronny | arigato: thats the old stuff, dont want | 14:07 |
| ronny | arigato: there is one that generates the bindings from the xcb spec | 14:07 |
| arigato | ronny: I don't really care, simple_x11 is two pages of C | 14:07 |
| ronny | ok | 14:08 |
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| Nick change: Gulopine -> Gulaway | 14:14 | |
| arigato | there are more interesting things to worry about if I feel like hacking this more... | 14:17 |
| arigato | like supporting loading and playing Doom levels | 14:17 |
| Alex_Gaynor | that would be awesome | 14:17 |
| Alex_Gaynor | Hmm, I wonder if translation could be sped up by converting some of the "for x in foo_list[1:]" to use islice, so they don't copy | 14:21 |
| Nick change: DasIch_ -> DasIch | 14:22 | |
| arigato | I'd rather keep the translation's code clear | 14:23 |
| arigato | and for places where it really makes a measurable difference, rewrite it "for i in range(1, len(foo_list)):"... | 14:24 |
| Alex_Gaynor | that requires me to have a clue if ht iterable is a list though, I suppose | 14:26 |
| Action: Alex_Gaynor does nothing for now | 14:26 | |
| arigato | of course it is not a generator, because of the "[1:]" in the first place | 14:27 |
| Alex_Gaynor | ehindeed | 14:28 |
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| kenaan | 12edelsohn ppc-jit-backend 1109dd516eeee3 15/pypy/jit/backend/ppc/ppcgen/opassembler.py: Use sld for PPC64 shifts in getitem and unicode. | 14:43 |
| Action: Sentynel has arrived in sweden! | 14:47 | |
| xorAxAx | bra | 14:48 |
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| kenaan | 12hakanardo extradoc 1117ee08a6ac71 15/talk/iwtc11/benchmarks/: iteration becnhmakrs | 14:52 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-linux-x86-32/builds/1080 [12arigo] | 14:57 |
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| ronny | arigato: what is blockfs? | 15:14 |
| arigato | the files in the directory start with docstrings that explain that | 15:15 |
| ronny | arigato: im not sure what the whole is supposed to be | 15:19 |
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| arigato | it's nothing more than a collection of files that are each independently useful | 15:27 |
| arigato | mostly blockfs.py, valuetree.py and hashtable.py | 15:28 |
| arigato | in fact I'm mostly using hashtable.py and sometimes valuetree.py | 15:28 |
| ronny | i see | 15:32 |
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| bbot2 | 4Failure: 15http://buildbot.pypy.org/builders/pypy-c-jit-macosx-x86-64/builds/250 | 16:23 |
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| arigato | ronny: btw, https://bugs.pypy.org/issue924 (stdlib heapq islice missuse): can we close it? | 16:28 |
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| CIA-25 | 03arigo 07roundup * 10#828/subprocess on nightly builds, linux 64: | 16:35 |
| CIA-25 | The patch should at least check if self.{stdin,stdout,stderr} are None, and not | 16:35 |
| CIA-25 | call close() on None. * 14https://bugs.pypy.org/issue828 | 16:35 |
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| kenaan | 12arigo default 1106cddf70488a 15/pypy/rlib/rmmap.py: Attempt to fix Windows translation. | 16:41 |
| CIA-25 | 03arigo 07roundup * 10#906/CTRL-leftarrow and CTRL-rightarrow don't work in PyPy console: | 16:47 |
| CIA-25 | mwh: can you implement this in pyrepl? Or would you prefer that we do it | 16:47 |
| CIA-25 | ourselves? I suspect that it's a matter of listing the most common key ... * 14https://bugs.pypy.org/issue906 | 16:47 |
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| ronny | arigato: yup | 16:50 |
| arigato | ok :-) | 16:50 |
| Action: arigato closes | 16:50 | |
| CIA-25 | 03arigo 07roundup * 10#920/Lost data with async I/O: | 16:52 |
| CIA-25 | Hi Stefanor, | 16:52 |
| CIA-25 | Do you still work on your fix? Or should we take it from there and finish it? * 14https://bugs.pypy.org/issue920 | 16:52 |
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| CIA-25 | 03arigo 07roundup * 10#921/_structseq is a slow mess: | 17:00 |
| CIA-25 | [invalid] Doesn't seem to be particularly the fault of os.stat_result. Rewriting the | 17:00 |
| CIA-25 | benchmark with afa's command in it gets us a +25% speed imp ... * 14https://bugs.pypy.org/issue921 | 17:00 |
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| CIA-25 | 03arigo 07roundup * 10#900/Using cProfile on Windows generates negative tottime values: | 17:04 |
| CIA-25 | Note that I think a possible cause for this is that cProfile, together with the | 17:04 |
| CIA-25 | JIT, uses as timestamp the very fast single-assembler instruction ... * 14https://bugs.pypy.org/issue900 | 17:04 |
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| CIA-25 | 03stefanor 07roundup * 10#920/Lost data with async I/O: | 17:54 |
| CIA-25 | Working on it, but very intermittently (I'm at the Ubuntu Developer Summit this | 17:54 |
| CIA-25 | week). | 17:54 |
| CIA-25 | I started looking at the io module. I think it mostly han ... * 14https://bugs.pypy.org/issue920 | 17:54 |
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| CIA-25 | 03arigo 07roundup * 10#905/ZipFile.extractall is very slow compared to CPython 2.6: | 18:09 |
| CIA-25 | Fwiw it's spending 25% of the total time in computing the crc32, which if maybe | 18:09 |
| CIA-25 | not the main issue is still far too much :-/ * 14https://bugs.pypy.org/issue905 | 18:09 |
| Alex_Gaynor | arigato: if crc32 is slower than it's likely because we have to do a copy | 18:13 |
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| kenaan | 12mattip numpy-multidim 116eff7c357df1 15/pypy/module/micronumpy/: repr/str: add tests for numpy compliance, code cleanup | 18:23 |
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| kenaan | 12edelsohn ppc-jit-backend 11058e97bccb87 15/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py: Optimize zero-extend and sign-extend in _ensure_result_bit_extension and add PPC64 support. | 19:05 |
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| arigato | Alex_Gaynor: yes, indeed | 19:14 |
| Action: Alex_Gaynor wonders if the pure python version might be faster | 19:15 | |
| arigato | also, fwiw, CPython 2.7 has the same in binascii.crc32() and in zlib.crc32(), but pypy's binascii.crc32 is much slower | 19:15 |
| arigato | no, I doubt it | 19:15 |
| arigato | even the "pure C" version is like binascii.crc32: twice slower | 19:15 |
| arigato | zlib's version is cleverly optimized | 19:16 |
| Alex_Gaynor | mmm | 19:16 |
| Alex_Gaynor | silly cleverly optimized C code | 19:16 |
| arigato | :-) | 19:16 |
| arigato | but it seems to spend all its time in get_nonmovingbuffer() just before the call to crc32() | 19:17 |
| arigato | well at least, about as much time as in crc32() | 19:17 |
| arigato | or even a bit longer | 19:17 |
| Alex_Gaynor | perhaps related to GCC not vectorizing that copy loop? | 19:17 |
| arigato | no real clue | 19:17 |
| Action: arigato -> dinner for now | 19:18 | |
| Alex_Gaynor | bye | 19:18 |
| arigato | see you! | 19:18 |
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| Alex_Gaynor | Rhyolite: ping | 19:37 |
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| CIA-25 | 03afa 07roundup * 10#900/Using cProfile on Windows generates negative tottime values: | 19:38 |
| CIA-25 | On Windows you could use:: | 19:38 |
| CIA-25 | DWORD mask = 1; // pin to processor #0 | 19:38 |
| CIA-25 | SetProcessAffinityMask(GetCurrentProcess(), &mask); * 14https://bugs.pypy.org/issue900 | 19:38 |
| CIA-25 | 03agaynor 07roundup * 10#905/ZipFile.extractall is very slow compared to CPython 2.6: | 19:40 |
| CIA-25 | It looks like that time is likely from the memcpy-ish loop we have in | 19:40 |
| CIA-25 | get_nonmoving buffer. That's likely much much slower than it needs to be ... * 14https://bugs.pypy.org/issue905 | 19:40 |
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| fijal | hi | 20:01 |
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| Alex_Gaynor | fijal: hey, what contintent are you on? | 20:09 |
| fijal | europe | 20:10 |
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| fijal | and for another two weeks still europe | 20:10 |
| Alex_Gaynor | fijal: I'm fighting GCC vectorizer again :/ | 20:12 |
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| fijal | fun | 20:13 |
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| Alex_Gaynor | fijal: btw, the JIT is kind of good: http://paste.pocoo.org/show/501350/ | 20:20 |
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| kenaan | 12hakanardo extradoc 1194871ac1f542 15/talk/iwtc11/benchmarks/: a few more becnhmarks and some results | 20:55 |
| kenaan | 12hakanardo extradoc 11ab6bc92f1d6d 15/talk/iwtc11/benchmarks/iter/: typo | 20:55 |
| Alex_Gaynor | hakanardo: what's the motivation for all these benchmarks? | 20:56 |
| markpearse | is packed and ready to set out for the Goteborg sprint at 5 in the morning | 20:58 |
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| hakanardo | comparing different ways to construct iterators | 20:59 |
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| Alex_Gaynor | hakanardo: what's the motivation though? | 21:01 |
| hakanardo | generators are still significantly slower than a simple while loop | 21:01 |
| hakanardo | I write a lot of code that iterat over pixels i images doing different stuff | 21:01 |
| Alex_Gaynor | ah | 21:01 |
| Alex_Gaynor | probably because generators still allocate stuff I think | 21:01 |
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| hakanardo | I'm looking for a way to writh such things that is both fast and has a nice syntax | 21:02 |
| hakanardo | yes that would be my guess to | 21:02 |
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| Rhyolite | Alex_Gaynor: pong | 21:11 |
| Alex_Gaynor | Rhyolite: do you know what, if anything, I can do to help push that vectrization issue forwards? | 21:11 |
| Rhyolite | fijal's vectorization work? | 21:12 |
| Alex_Gaynor | no, the GCC issue | 21:12 |
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| Rhyolite | I think the best you can do is comment in the bug report asking about progress | 21:13 |
| Rhyolite | or posting the patch from the bug report on gcc-patches to give it more attention for someone to approve it | 21:13 |
| Alex_Gaynor | is there documentation on the GCC triage process anywhere? | 21:14 |
| Rhyolite | It really needs a decision on the effect of user labels | 21:14 |
| Action: Alex_Gaynor hates to be the guy commenting "hi guys, please fix my bug" :) | 21:14 | |
| Rhyolite | What do you mean by the triage process? | 21:14 |
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| Rhyolite | In some ways, I think it's completely triaged | 21:15 |
| Rhyolite | and even know how to fix it | 21:15 |
| Alex_Gaynor | Something roughly equivilant to: https://docs.djangoproject.com/en/1.3/internals/contributing/#ticket-triage | 21:15 |
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| Rhyolite | not really | 21:16 |
| Rhyolite | There is how to report bugs: http://gcc.gnu.org/bugs/ | 21:16 |
| Rhyolite | but not a lot about bug triage | 21:16 |
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| Nick change: etrepum_ -> etrepum | 21:16 | |
| Rhyolite | I think the problem is how to handle user labels vs GNU Project policy | 21:18 |
| Alex_Gaynor | ah perfect, topics I know nothng about | 21:18 |
| Rhyolite | :-) | 21:18 |
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| Rhyolite | The problem is that we're approaching the end of GCC Stage 1 development | 21:19 |
| Rhyolite | so people are busy and you probably won't get a lot of response until later this month | 21:19 |
| Alex_Gaynor | is that schedule posted somewhere? | 21:19 |
| Rhyolite | Richard Guenther cares about performance | 21:19 |
| Rhyolite | http://gcc.gnu.org/ml/gcc/2011-10/msg00481.html | 21:20 |
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| Alex_Gaynor | So if I follow, P1 is for regressions, P2 allows features, and P3 is bugfixes only? | 21:21 |
| Rhyolite | yes, but we now skip P2 | 21:22 |
| Rhyolite | oh, sorry | 21:22 |
| Rhyolite | you mean priority, not phases | 21:22 |
| Alex_Gaynor | I don't know what I mean :) | 21:22 |
| Alex_Gaynor | err, I guess I mean stages | 21:23 |
| Rhyolite | stage 1 is for new features | 21:24 |
| Rhyolite | we used to have stage 1 for major features and stage 2 for minor features | 21:25 |
| Alex_Gaynor | Are missed-optimizations considered features or bugs? | 21:25 |
| Rhyolite | stage 3 really is meant to address regressions | 21:25 |
| Rhyolite | I'm not sure if this is considered a regression | 21:25 |
| Rhyolite | but it also is a trivial fix | 21:25 |
| Alex_Gaynor | AFAIK it never worked, so it isn't a reression | 21:26 |
| Rhyolite | right | 21:26 |
| Rhyolite | there are sort of three approaches: | 21:26 |
| Rhyolite | 1) always remove the label | 21:26 |
| Rhyolite | 2) add a new command line option to remove the label | 21:26 |
| Rhyolite | 3) add enough heuristics to remove the label when we can tell it never will be useful | 21:27 |
| Alex_Gaynor | I suppose (3) is the best choice | 21:27 |
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| Rhyolite | everyone agreed it was stupid to keep the misoptimization | 21:28 |
| Rhyolite | the question is how to clean up the CFG | 21:28 |
| Rhyolite | to allow the BB merges | 21:28 |
| Alex_Gaynor | right | 21:28 |
| Rhyolite | adding a heuristic is more complicated and subtle | 21:28 |
| Alex_Gaynor | yup, and I have no idea what it would look like :) | 21:29 |
| Rhyolite | In other words, it's sort of a stupid missed optimization, but not clear how common it is | 21:29 |
| Rhyolite | more like, if the user feeds the compiler complicated gotos | 21:29 |
| Rhyolite | and user labels | 21:29 |
| Rhyolite | and machine generated code | 21:29 |
| Rhyolite | they should adjust their expectations | 21:30 |
| Alex_Gaynor | Well, I'm now up to two cases where it's definitely tied to performance issues in pypy | 21:30 |
| Rhyolite | right | 21:30 |
| Rhyolite | let me put it this way, if you found a case where GCC generated this for Mozilla, more people would care | 21:30 |
| Rhyolite | or Gnome | 21:31 |
| Rhyolite | or Linux kernel | 21:31 |
| Alex_Gaynor | E_NEEDMOREMINDSHARE | 21:31 |
| Rhyolite | E_NEEDIMPORTANTCUSTOMERMINDSHARE | 21:32 |
| Alex_Gaynor | something like that :) | 21:32 |
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| bbot2 | Started: 15http://buildbot.pypy.org/builders/own-macosx-x86-32/builds/699 | 22:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/jit-benchmark-linux-x86-32/builds/927 | 22:48 |
| bbot2 | Started: 15http://buildbot.pypy.org/builders/jit-benchmark-linux-x86-64/builds/124 | 22:48 |
| amaury__ | CPython also mixes applevel and interplevel code: | 22:50 |
| amaury__ | http://hg.python.org/cpython/file/fd4236c787cb/Modules/_elementtree.c#l2888 | 22:50 |
| Alex_Gaynor | amaury__: I like our way better | 22:54 |
| amaury__ | sure | 22:55 |
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| gutworth | Alex_Gaynor: oh, yes, source in strings is really quite elegant | 23:23 |
| ericflo | ewww | 23:24 |
| gutworth | (you'll note pypy does this, too) | 23:25 |
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| Alex_Gaynor | gutworth: we at least use appleveldefs for most code | 23:46 |
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| --- Wed Nov 2 2011 | 00:00 | |
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