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[00:13:59] <linuxcnc-build_> build #1810 of 1301.rip-precise-rtai-i386 is complete: Failure [4failed compile runtests] Build details are at
http://buildbot.linuxcnc.org/buildbot/builders/1301.rip-precise-rtai-i386/builds/1810 blamelist: Jeff Epler <jepler@unpythonic.net>
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[00:20:34] <seb_kuzminsky> huh, the tlo test failed
[00:21:17] <seb_kuzminsky> heh
[00:21:46] <seb_kuzminsky> it ran an invalid gcode and looked for the expected error, but instead got "Unexpected realtime delay: check dmesg for details" and got scared
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[00:22:54] <seb_kuzminsky> i think this is why halcmd has setexact_for_test_suite_only...
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[00:25:36] <seb_kuzminsky> wfm
[00:30:19] <linuxcnc-build_> build #2620 of 0000.checkin is complete: Failure [4failed] Build details are at
http://buildbot.linuxcnc.org/buildbot/builders/0000.checkin/builds/2620 blamelist: Jeff Epler <jepler@unpythonic.net>
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[03:52:36] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 41276aa 06linuxcnc 10tests/tlo/core_sim.hal tests: fix a spurious false failure in the tlo test * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=41276aa
[03:52:36] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 687d493 06linuxcnc 10(17 files in 3 dirs) tests: reorganize the halui jogging test dir layout * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=687d493
[03:52:36] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 5efacc6 06linuxcnc 10(6 files) halui test: add an mdi test * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=5efacc6
[03:53:31] <seb_kuzminsky> that should fix the test failure, and add a test i want for lui development
[03:53:34] <seb_kuzminsky> bbl
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[04:26:59] <linuxcnc-build_> build #2611 of 1200.rip-lucid-i386 is complete: Failure [4failed compile runtests] Build details are at
http://buildbot.linuxcnc.org/buildbot/builders/1200.rip-lucid-i386/builds/2611 blamelist: Sebastian Kuzminsky <seb@highlab.com>
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[04:31:48] <linuxcnc-build_> build #2622 of 0000.checkin is complete: Failure [4failed] Build details are at
http://buildbot.linuxcnc.org/buildbot/builders/0000.checkin/builds/2622 blamelist: Sebastian Kuzminsky <seb@highlab.com>
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[04:44:30] <aluminum> we just installed machinekit, is there a quick start guide we can look at to get started?
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[06:22:38] <seb_kuzminsky> aluminum: this channel is for linuxcnc development, you should ask your question somewhere the machinekit people hang out
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[06:37:46] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 bb4b181 06linuxcnc 10tests/halui/mdi/test-ui.py halui test: give halui a few seconds to switch the task mode back * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=bb4b181
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[12:44:57] <jepler> I filed a "bug" on machinekit's git against their website, which suggests #linuxcnc-devel as a place to go for advice about machinekit.
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[12:48:46] <archivist> hehe
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[13:21:06] <skunkworks> jepler, so - have you peeked at what is going on over there? Huh?
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[13:28:43] <Tom_itx> is that purely for arm?
[13:42:55] <jepler> skunkworks: not really, no
[13:43:18] <micges-dev> Tom_itx: no
[13:44:07] <micges-dev> Tom_itx: they support xenomai which is multi platform
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[14:05:14] <skunkworks> micges-dev, how goes jerk planner?
[14:05:45] <micges-dev> finished :)
[14:07:08] <micges-dev> skunkworks: it is tested on gantry plasma cutter
[14:08:37] <micges-dev> and ja4 branch is tested on gantry waterjet, as job was to merge jerk planner to ja4
[14:09:04] <skunkworks> Really? I will pull and do some testing
[14:10:09] <micges-dev> I'll rearange git soon to reflect fixes on place, now I got quick urgent project
[14:10:22] <skunkworks> sounds good
[14:10:23] <cradek> is jerk limiting based on the cradek tp or the rob tp?
[14:10:33] <micges-dev> cradek tp
[14:10:49] <cradek> that's going to make it even slower
[14:11:11] <skunkworks> probably high accelleration machines...
[14:11:19] <micges-dev> cradek: nooo
[14:11:24] <micges-dev> about 2x faster
[14:11:37] <cradek> I don't see how that could be
[14:11:42] <cradek> it adds a new constraint
[14:11:49] <cradek> it must have other improvements too then
[14:12:08] <micges-dev> test machine is 65m/min 5000mm/s2 and 75000mm/s3
[14:12:37] <micges-dev> before that it was 60m/min 2000mm/s2
[14:13:24] <micges-dev> yes new constraint but you can raise rest of them up
[14:13:52] <skunkworks> micges-dev, you have blending working?
[14:13:58] <micges-dev> and machine won't dissasemble itself :)
[14:14:01] <micges-dev> skunkworks: yes
[14:15:53] <cradek> oh ok, you mean you can set the accel higher so the tp limitations are less onerous
[14:15:58] <cradek> that makes sense
[14:16:08] <micges-dev> exactly
[14:30:12] <seb_kuzminsky> jepler: thanks
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[15:05:39] <jepler> micges-dev: I'm not sure whether jerk-limited TP should be merged into JAx. Conceptually they are independent, and we might want to ultimately merge one but not the other into master
[15:06:15] <cradek> it can't go into master without being rewritten
[15:06:24] <cradek> and newer jaX are based on master
[15:06:24] <seb_kuzminsky> yeah that's a bummer
[15:07:38] <micges-dev> yeah I know rules on glo, it's my client need to run jerk + ja4
[15:08:02] <micges-dev> I'll push jerk branch only to glo
[15:08:14] <cradek> that would be great
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[15:23:54] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.7 e48b093 06linuxcnc Merge remote-tracking branch 'origin/2.6' into 2.7 * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=e48b093
[15:24:55] <KGB-linuxcnc> 03Sebastian Kuzminsky 05master 75ec84c 06linuxcnc Merge remote-tracking branch 'origin/2.7' * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=75ec84c
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[15:42:39] <KGB-linuxcnc> 03Michael Geszkiewicz 052.7 6b09f7f 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: cleanup unused code and leftover from rtnet * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=6b09f7f
[15:42:39] <KGB-linuxcnc> 03Michael Geszkiewicz 052.7 2793426 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: use defines for all timeouts in driver * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=2793426
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[16:21:27] <seb_kuzminsky> skunkworks, PCW: did you guys test brian morel's rtai kernel with the baytrail usb fixes?
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[16:36:32] <pcw_home> No, let me see if i can find the link and i will test it today
[16:36:54] <seb_kuzminsky> i'm building it right now, i'll have a deb for you to test soonish
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[16:39:26] <cradek> yay!
[16:42:02] <pcw_home> if not for that usb issue the J1800,1900,2950 MBs are excellent linuxcnc hosts
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[16:44:15] <seb_kuzminsky> :-)
[16:44:18] <seb_kuzminsky> yeah, sounds like it
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[16:45:59] <seb_kuzminsky> hrm, a vm i'm using for testing is having strange network trouble
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[16:46:17] <seb_kuzminsky> i can use dig to resolve ftp.us.debian.org, but apt says it can't resolve it
[16:46:35] <seb_kuzminsky> my house of cards has a screw loose
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[16:50:55] <skunkworks> seb_kuzminsky, yes - it worked for me..
http://electronicsam.com/images/KandT/testing/Screenshot%20-%2010242014%20-%2004:10:32%20PM.png
[16:51:23] <skunkworks> that is on a J1900
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[17:00:45] <seb_kuzminsky> skunkworks: great, thanks
[17:01:16] <seb_kuzminsky> the patch that brian morel applied to get usb to work doesn't change the abi, so upgrades should work smoothly for us
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[17:06:43] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 07b9cfe 06linuxcnc 10src/emc/motion/control.c rebrand a realtime warning message from motion * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=07b9cfe
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[17:48:40] <seb_kuzminsky> here's the apt line for the new kernel:
[17:48:57] <seb_kuzminsky> deb
http://highlab.com/~seb/linuxcnc/rtai-debs wheezy main
[17:49:07] <seb_kuzminsky> the upgrade works smoothly for me
[17:49:21] <seb_kuzminsky> the rtai-modules and linuxcnc packages are unaffected, only linux-image is upgraded
[17:49:59] <seb_kuzminsky> a rip build compiled against the current (old) kernel, version 3linuxcnc, still passes all the tests when run under the new 4linuxcnc kernel
[17:50:09] <seb_kuzminsky> the 2.6.4 deb works before and after the kernel upgrade as well
[17:50:55] <seb_kuzminsky> skunkworks, pcw_home: i'll wait for your reports, then if it still looks good i'll put these new linux-image debs up on wlo
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[18:02:05] <PCW> so what do i apt-get?
[18:02:51] <seb_kuzminsky> if you're on a machine that's already running the rtai kernel, run "apt-get upgrade"
[18:03:18] <seb_kuzminsky> if you're on a wheezy machine with some other kernel, "apt-get install linux-image-3.4-9-rtai-686-pae"
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[18:16:12] <Tom_itx> PCW did you see the broken link message on your page?
[18:16:23] <Tom_itx> (other channel)
[18:17:03] <PCW> Hmm that didnt change the kernel
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[18:19:01] <seb_kuzminsky> you need to reboot too
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[18:19:46] <PCW> I mean it updated the preemt-rt kernel but not the RTAI one
[18:20:03] <seb_kuzminsky> hmm
[18:20:21] <seb_kuzminsky> what does 'dpkg -l linux-image-3.4-9-rtai-686-pae' say?
[18:20:33] <seb_kuzminsky> and 'apt-cache policy linux-image-3.4-9-rtai-686-pae'
[18:26:53] <PCW> I needed to apt-get update
[18:27:32] <seb_kuzminsky> ah, yes, i forgot to mention that part...
[18:29:19] <PCW> oops cannot resolve highlab.com
[18:30:19] <seb_kuzminsky> hmm, works for me
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[18:30:29] <seb_kuzminsky> ;; ANSWER SECTION:
[18:30:29] <seb_kuzminsky> highlab.com. 0 IN A 71.218.158.216
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[18:34:37] <cradek> yeah wfm too
[18:34:50] <archivist> 5 good dns servers
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[18:37:45] <archivist> I recommend
http://www.squish.net/dnscheck/v1.html when you want to check all your dns servers are up and running
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[18:51:15] <memfrob> IPIPE development started for 3.16
[18:54:41] <memfrob> http://git.xenomai.org/ipipe.git/log/?h=raw-ipipe-3.16
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[18:58:16] <memfrob> for what it's worth once it's done ill add 3.16 support to RTAI, only takes about an hour or so once you get used to it.
[19:00:31] <micges-dev> memfrob: heh "takes about an hour or so once you get used to it"
[19:00:48] <micges-dev> memfrob: it's black magic box for me :)
[19:02:24] <micges-dev> seems that you are pretty comfortable with all ipipe stuff, maybe it will move rtai forward
[19:03:38] <CaptHindsight> it's already a fork of RTAI.org
[19:04:20] <CaptHindsight> that project is just about dead
[19:05:00] <jepler> ok now do preempt-rt on 3.16
[19:05:09] <CaptHindsight> it might have updates every few months using memfrobs tree
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[19:07:58] <memfrob> IPIPE is a much smaller patchset than preempt_rt
[19:09:51] <seb_kuzminsky> memfrob: what do you think of jepler's idea of writing an rtapi implementation directly for i-pipe, without the need for rtai or rt-preempt?
[19:09:51] <memfrob> preempt_rt patches affect a lot different things within the kernel whereas IPIPE is mainly separate and an "additonal layer"
[19:10:19] <jepler> the thing that would really suck about that would be we'd need our own math library
[19:10:24] <jepler> ask memfrob how fun that's been to maintain :-/
[19:10:55] <memfrob> the RTAI math library in my forked tree is fine. i dont see the problem with just using that.
[19:11:20] <jepler> it's true that it's much better now than it was this spring
[19:11:28] <jepler> there are still some layers which seem ill-conceived
[19:11:33] <memfrob> seb_kuzminsky: i think it's great as long as the rtapi implementation doesnt need a full re-write for every new IPIPE release
[19:11:50] <seb_kuzminsky> depends how much ipipe changes i suppose
[19:12:31] <memfrob> mainly new functions and calls for use with xenomai, most of the changes dont impact RTAI or nor the scheduler
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[19:13:49] <jepler> for example, consider sqrt(). w_sqrt.c defines sqrt. It has a K&R style prototype (optionally). This K&R prototype should be deleted
[19:14:00] <jepler> w_sqrt has two implementations, _IEEE_LIBM and another one
[19:14:00] <memfrob> i have to get going ill be back later, the new RTAI tree is great and will not need any changes for quite some time. i say a direct rtapi implementation is a lot of work for the end result
[19:14:05] <jepler> we should get rid of one or the other
[19:14:22] <memfrob> especially now since i made a linuxcnc-specific RTAI tree
[19:14:28] <jepler> the !_IEEE_LIBM case is weird, it sometimes operates via a function __kernel_standard, which is passed the numeric paramter 26 to indicate sqrt
[19:14:38] <jepler> that's just gross
[19:14:55] <memfrob> now if RTAI was broken and i didnt fork it and fix all the bugs, then a direct rtapi ipipe implementation would be almost entirely necessary
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[19:15:14] <jepler> so in summary, I mostly ignore the rtai libm grossness when it's sequestered inside rtai
[19:15:18] <jepler> but I don't want that in linuxcnc
[19:15:27] <memfrob> i did that RTAI work for a reason. ;)
[19:16:59] <memfrob> jepler the rtai math library is in such great standing mainly thanks to you
[19:17:14] <memfrob> i just did some minor clean-up to make it a little easier to read
[19:17:39] <memfrob> you did the heavy lifting, i remember you fixed the userspace header in kernel-space problem too, great job!
[19:17:47] <jepler> ah ok, I thought this tree I was looking at was up to date
[19:17:57] <jepler> but several of the problems I mentioned are fixed in your git
[19:18:04] <jepler> is __kernel_standard gone now?
[19:18:10] <memfrob> github.com/ntulinux/rtai
[19:18:25] <memfrob> i believe so, its whatever you did
[19:18:27] <jepler> I know where your git is, I was just looking at something that wasn't your git :-P
[19:18:32] <memfrob> ah!
[19:19:23] <memfrob> ok well i gotta get going, feel free to discuss and ill read the scrollback later
[19:19:49] <jepler> k_standard.c is still in your git. should figure out if it's still used / still should be used
[19:20:19] <jepler> looks unused, I'll prepare a pull request
[19:21:01] <jepler> but I don't think I have a system where I can compile-test it, so take care before merging
[19:22:45] <jepler> extern double __kernel_sin(double,double,int);
[19:22:45] <jepler> extern double __kernel_cos(double,double);
[19:22:53] * jepler wonders how it happens that sin takes three arguments while cos takes two
[19:26:55] <jepler> (whatever else I have to say about the rtai libm's structure, they did take what appear to be technically competent low-level implementations of the various functions)
[19:34:33] <jepler> so anyway, __kernel_{sin,cos} take a pair of arguments that are the "double-double precision" value of the original sin() argument after its reduction modulo pi/2. __kernel_rem_pio2 also returns an argument saying what octant the answer is in, so after reduction either __kernel_sin or __kernel_cos is used. This explains why each one takes a pair of double arguments.
[19:35:55] <jepler> Additionally, sin has a special case for when the second value is known a priori to be zero; this can only happen in the implementation of sin() where no range reduction is required.
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[20:12:40] <PCW> OK gigabyte J1800N-D2H works fine with patched RTAI kernel about 7/10 usec on latency test after a few minutes of youtube torture
[20:14:05] <Connor> What Mini-ITX board are we recommended now vs the Atom 525D ?
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[20:23:51] <PCW> well the gigabyte J1800N-D2H is looking better!
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[20:25:10] <PCW> I should probably try the ASUS J1800I-A
[20:25:31] <PCW> since it has a PCI slot
[20:26:59] <CaptHindsight> what was in the kernel patch to fix the usb problem on the J1800's?
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[20:29:29] <PCW> Gigabyte J1800N-D2H works with a 6KHz servo thread on a 6i25/7I77, pretty impressive
[20:30:44] <jepler> CaptHindsight:
https://github.com/brianmorel99/linux-rtai-debian/commit/711b4da8d0e0c12cae6187c209701ae6e29f58ff I think
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[20:32:22] <PCW> thats about 3x as fast as a D525 will run
[20:33:45] <CaptHindsight> ah, driver fix
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[20:40:03] <cradek> seb_kuzminsky: do you have fixed kernel packages up yet?
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[20:51:50] <Connor> So, is that the board we're recommending now ?
[20:52:03] <Connor> It's still a Atom isn't it ?
[20:52:59] <PCW> well Intel has changed the name From Baytrail Atom to Celeron so not sure what it is
[20:53:29] <PCW> but its much faster than the Atoms at the same or lower power
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[20:54:40] <jepler> because it needs to re-brand it with a marketing name that's not associated with poor performance. ;-)
[20:55:00] <Connor> yea.. They need to LOOSE the name Celeron.. that name at least in my mind.. means purposely crippled CPU.
[20:55:42] <Connor> jepler: Really. I think Celeron == Poor performance.. unless your being Sarcastic.
[20:56:22] <jepler> Connor: snarky, at least. it's funny, because both "atom" and "celeron" denote poor performance
[20:56:22] <PCW> actually the celeron G1850s and similar are quite fast
[20:56:30] <jepler> or maybe connote
[20:56:45] <PCW> (baby Haswells)
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[20:57:24] <Connor> I remember back in the day when they destroyed the pin to the FPU on the SX's
[20:57:43] <Connor> Really were DX's
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[21:00:43] <seb_kuzminsky> cradek: not yet, i'll do it tonight & let you know
[21:01:01] <seb_kuzminsky> well, they're up at highlab.com, but not at linuxcnc.org yet
[21:01:26] <Connor> Do we have a WIKI page or something that recommends Mobo's and such for people ?
[21:01:48] <seb_kuzminsky> Connor: yeah, it's on the wiki somewhere, not sure how up to date it is
[21:01:50] <Connor> We kinda stumbled onto the fact that the Atom D525 worked well with LinuxCNC
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[21:12:09] <PCW> http://www.newegg.com/Product/Product.aspx?Item=N82E16813138412
[21:12:11] <PCW> is another low power motherboard that works well (but no PCI)
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[21:34:35] <PCW> http://www.newegg.com/Product/Product.aspx?Item=N82E16813128698&cm_re=j1900-_-13-128-698-_-Product
[21:34:37] <PCW> I think is what Skunkworks has (it has PCI and dual Ethernet)
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[21:39:13] <CaptHindsight> is it worth dusting off Linuxcnc with Fedora? FC21 is supposedly going to include support for several ARM boards
[21:39:28] <CaptHindsight> http://www.phoronix.com/scan.php?page=news_item&px=MTc2MjI
[21:40:58] <jepler> CaptHindsight: I'll review patches for portability to other linux, but I don't plan to use fedora myself
[21:41:41] <CaptHindsight> jepler: yes, I recall your fondness of yum and fedora :)
[21:41:44] <jepler> and given fedora's fast release schedule I sure would not anticipate it being the preferred os distro to base linuxcnc on
[21:43:01] <jepler> now if you were gung ho to port to centos maybe we have a long term support platform worth talking about :-P
[21:43:34] <CaptHindsight> that would be nice
[21:44:23] <CaptHindsight> I recall packaging for Fedora wasn't that simple
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[21:47:14] <jepler> I did a tiny bit of rpm packaging back in the days of redhat 5/6/9 and it was certainly different than debian packaging. at the time I sort of understood it
[21:47:20] <KGB-linuxcnc> 03Michael Geszkiewicz 052.7 15be5dc 06linuxcnc 10src/po/pl.po update Polish translation * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=15be5dc
[21:47:25] <jepler> but that was 15 years ago, I suppose it's quite different now
[21:49:17] <jepler> (my personal linux history is sls -> mcc -> redhat -> ubuntu -> debian)
[21:50:31] <jepler> oh I guess I was on fedora up to about ... 4 ?
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[21:58:43] <CaptHindsight> I guess it's only worth considering if hm2_eth ends up working well enough on ARM
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[22:03:32] <skunkworks_> crap - I updated the linux install - it used the new kernel but the install is old enough that the wrong kernel booted.. Didn't get back to it.
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[23:49:01] <memfrob> hi all im back!
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[23:54:27] <memfrob> jepler did you compile test the k_standard patch?
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