| --- Log opened Wed Apr 27 00:00:10 2011 | ||
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| jrayhawk | so it's looking like I'd incur a downtime of several hours if I attempted to shutdown/tar everything over/start up; since you're mostly static files, would you like me to tar everything over, shut down, tar a small selection of files over, and start up, or is several hours of downtime okay? | 00:17 |
|---|---|---|
| fenn | http://worlddominationsummit.com/ this would be a fun event to stage a hostage crisis | 00:17 |
| fenn | hey joe, um, how's it going | 00:18 |
| jrayhawk | hello | 00:18 |
| jrayhawk | i am alive thanks for asking | 00:18 |
| kanzure | several hours is ok | 00:20 |
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| kanzure | is tarring enough? | 00:20 |
| jrayhawk | oh good, less work for me | 00:20 |
| kanzure | actually, you should ask fenn too | 00:20 |
| fenn | i dont have anything running afaik | 00:21 |
| kanzure | ok | 00:21 |
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| kanzure | yep sounds good | 00:21 |
| fenn | except this screen/irssi here | 00:21 |
| kanzure | fenn: you can move to cysteine temporarily if you want.. | 00:21 |
| kanzure | or neuroblastoma | 00:21 |
| jrayhawk | neuroblastoma will be stabler. | 00:21 |
| jrayhawk | cysteine changes addresses. | 00:21 |
| fenn | will gnusha.org keep the same ip? | 00:22 |
| jrayhawk | Yeah. | 00:23 |
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| --- Log opened Wed Apr 27 06:09:07 2011 | ||
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| -!- Topic for ##hplusroadmap: http://gnusha.org/skdb/ http://groups.google.com/group/diybio http://bit.ly/diybionews http://gitduino.com/ http://gadaprize.org/ | logs: http://gnusha.org/logs/ | 06:09 | |
| -!- Topic set by kanzure [~kanzure@131.252.130.248] [Thu Jan 20 10:44:20 2011] | 06:09 | |
| [Users ##hplusroadmap] | 06:09 | |
| [ AJollyLife] [ devrandom ] [ Jappe2 ] [ mayko ] [ streety ] | 06:09 | |
| [ AlonzoTG ] [ drazak ] [ JayDugger ] [ mjr ] [ Technicus ] | 06:09 | |
| [ augur ] [ elmom ] [ jebba ] [ nchaimov] [ uniqanomaly] | 06:09 | |
| [ bkero ] [ epitron ] [ jenzebubble] [ nsh ] [ Utopiah ] | 06:09 | |
| [ CIA-92 ] [ ferrouswheel] [ jrabbit ] [ pasky ] [ ybit ] | 06:09 | |
| [ cluckj ] [ gnusha ] [ jrayhawk ] [ QuantumG] | 06:09 | |
| [ dbolser ] [ Helleshin ] [ kanzure__ ] [ saurik ] | 06:09 | |
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| -!- Channel ##hplusroadmap created Thu Feb 25 23:40:30 2010 | 06:09 | |
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| kanzure | well that's just fucking great, | 08:55 |
| kanzure | how am i supposed to get home now without SETI | 08:55 |
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| kanzure | hello Tyrant | 10:19 |
| Tyrant | hey kanzure | 10:19 |
| Tyrant | how's life | 10:20 |
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| kanzure | time python -c 'import esolid; solid1 = esolid.bryan_read_file("desolid/boxinp1"); solid2 = esolid.bryan_read_file("desolid/cylinp7"); solid1.boolean(solid2, "U")' &> esolid_output.txt | 11:26 |
| kanzure | http://diyhpl.us/~bryan/irc/esolid_output.txt | 11:26 |
| kanzure | http://heybryan.org/shots/2011-04-27-1357-boolean-nurbs.png | 11:59 |
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| kanzure | um why did i use the union? that doesn't demonstrate what's going on.. at all | 12:37 |
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| kanzure | http://heybryan.org/shots/2011-04-27-1440-boolean-nurbs-difference.png | 12:41 |
| kanzure | next thing on my todo list is figuring out how to check my python versions against the swigged versions | 13:09 |
| kanzure | since swig won't accept my ArbitraryPatch against its _SWIGGED_K_PATCH object | 13:09 |
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| kanzure | how do i make up unit tests when i don't know what the values should be? | 14:44 |
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| fenn | "Given a CSG-tree of primitive solids, ESOLID performs exact boundary evaluation and returns the B-rep of resulting solid." but don't you want to start with an arbitrary brep, not primitives? | 16:39 |
| fenn | i.e. can you load in a step file and start modifying it | 16:40 |
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| kanzure | fenn: esolid doesn't support STEP, no | 16:44 |
| kanzure | it just does boolean operations on b-reps | 16:44 |
| kanzure | esolid itself provides a few primitives like cylinders and cubes and not much for specifying your own arbitrary shapes, | 16:44 |
| fenn | but can you theoretically load a brep? | 16:45 |
| kanzure | yes | 16:45 |
| kanzure | the primitives are breps as well, like the surface of the cylinder | 16:45 |
| fenn | ok | 16:46 |
| kanzure | i have a swig interface file and a maybe 30% complete rewrite of esolid in python | 16:46 |
| kanzure | the wrapper is obviously separate but might be usable as a way to test "known good" | 16:47 |
| fenn | does it have a copyright license at all? | 16:48 |
| kanzure | no | 16:48 |
| kanzure | that's why i started on a rewrite | 16:48 |
| fenn | hum. you could ask the guy to put it under a permissive license | 16:48 |
| kanzure | this is the dude: http://faculty.cse.tamu.edu/keyser/ | 16:49 |
| fenn | looks like he's using it for 3d neuron reconstruction | 16:50 |
| kanzure | yeah i think he's somehow involved in todd's diamond-knife-edge-microscope group at tamu.edu | 16:50 |
| fenn | i thought the name was familiar but i might just be imagining it | 16:51 |
| fenn | i need to set up namazu or some other search engine; grep takes too long | 16:51 |
| kanzure | so.. strategy suggestions? | 16:52 |
| fenn | for rewrite? | 16:53 |
| kanzure | yeah | 16:53 |
| fenn | 1) define the problem. 2) solve the problem | 16:53 |
| kanzure | i don't know how people write this sort of code | 16:54 |
| kanzure | a lot of it is fairly repetitive in an obvious way; why didn't they abstract it away | 16:54 |
| kanzure | furthermore how can they keep these huge logic trees in their heads | 16:54 |
| kanzure | did they just write once and it worked magically the first time? | 16:54 |
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| kanzure | email sent to keyser.. | 17:02 |
| kanzure | so i see a few possible strategies: | 17:03 |
| kanzure | 1) continue rewriting the entire implementation into python and pray that it works eventually | 17:03 |
| kanzure | 2) just write a giant wrapper over the esolid library (there's also some builtin BRLCAD hooks??) | 17:04 |
| kanzure | 3) use the wrapper to help test #1? | 17:04 |
| kanzure | 4) just write random unit tests until things make sense | 17:05 |
| fenn | #4 sounds most promising | 17:05 |
| kanzure | so how would a unit test for "cube1" and "cube2" and "operation" look like? | 17:07 |
| kanzure | would i hard-code the expected resulting solid? | 17:07 |
| kanzure | hmm i could count the number of times the two solids intersect each other, and check that number | 17:09 |
| QuantumG | I don't know how applicable this is to you, but I would recommend putting an id in every object that monotonically increases | 17:13 |
| QuantumG | then do all you can to ensure there's no randomness in the system (for example, containers often do silly things like sorting by pointers when no sorting is specified.. heaps are known to be nondeterministic in some implementations) | 17:14 |
| QuantumG | that way, when you get a crash, you can say "where did object with id 73432 come from?" | 17:14 |
| kanzure | i'm at a more basic level at the moment.. | 17:14 |
| kanzure | "how do i avoid writing 20,000 lines of code before i know if anything works" | 17:15 |
| QuantumG | yeah, if you're trying to replace a library that doesn't have anything good to test it with, that's painful. | 17:15 |
| kanzure | i don't like that answer! blah | 17:16 |
| QuantumG | piecemeal replacement can work | 17:16 |
| QuantumG | although you'll spend a lot of time making your new code compatible with the old code. | 17:16 |
| kanzure | where i hardcode data until i can generate the right results? | 17:16 |
| kanzure | or do you mean replace their versions with my own until i've gutted the entire program? | 17:16 |
| QuantumG | yeah | 17:16 |
| kanzure | well i can just drop a python intrepreter into esolid and replace core library functions with my python versions (well, not really, since i've adopted various python idioms) | 17:17 |
| QuantumG | but, in general, you just write test program that only exercise one or two parts of the library.. then write those functions in your own library and demonstrate you get the same results from the test case. | 17:17 |
| QuantumG | rinse and repeat | 17:18 |
| kanzure | that seems really repetitive especially when the code looks like: | 17:18 |
| kanzure | http://diyhpl.us/~bryan/irc/refactored0.txt | 17:18 |
| QuantumG | wtf is with the magic numbers | 17:19 |
| kanzure | hell if i know | 17:19 |
| QuantumG | what's a type 1 or a type 2 or a type 3? | 17:19 |
| kanzure | someone's inability to do typing? | 17:19 |
| QuantumG | :) | 17:19 |
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| QuantumG | oh, and I *love* people who don't understand operator precedence so they put parens around everything | 17:20 |
| kanzure | maybe i'll try the "hard code some data until you can be reasonably sure that your functions are spitting out the same results" | 17:20 |
| kanzure | ((((true) or (fals)) or (false)) and not (true))))))) | 17:20 |
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| AJollyLife | ugh. I have no idea if I'll be in boston or fl in two weeks time, whcih makes it impossible to buy plane tickets for H+ nyc | 18:16 |
| kanzure | why are you going | 18:23 |
| AJollyLife | kanzure: why not? | 18:29 |
| AJollyLife | i like cons and meeting people, and I don't have any other con scheduled for that weekend | 18:30 |
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| QuantumG | i like cons and meeting people <- visit an inmate | 18:51 |
| jrayhawk | Bryan: we just fixed your repo name size limit in piny, and the transient underlay stuff is working much better; should I do an upgrade of it on gnusha? | 18:54 |
| jrayhawk | s/limit/\0 bug/ | 18:55 |
| kanzure | upgrading would be cool, thanks | 18:56 |
| kanzure | i also don't think it would break anything by upgrading? | 18:56 |
| jrayhawk | Nope. | 18:58 |
| jrayhawk | Or, rather, breakage will be fairly temporary. | 18:58 |
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| jrayhawk | I can also add the patch to Ikiwiki that makes it merely complain about an empty master rather than die. | 20:07 |
| jrayhawk | at which point you can clean out the git template and not have to do the denynonfastforwards nonsense | 20:07 |
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| --- Log closed Thu Apr 28 00:00:07 2011 | ||
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