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[02:56:51] <cradek> mozmck: that reminds me of this,
http://antirez.com/news/61
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[03:20:41] <memleak> hello all, im trying to cross compile linuxcnc for ARM. so far I have: CC="arm-unknown-linux-gnueabihf-gcc" CPP="arm-unknown-linux-gnueabihf-cpp" CXX="arm-unknown-linux-gnueabihf-g++" ./configure --host=x86_64-unknown-linux-gnu --target=arm-unknown-linux-gnueabihf --with-kernel-headers=/home/ntu/devel/arm/linux-4.0.5 --with-module-dir=/home/ntu/devel/arm/linux-4.0.5/output --with-boost-python=boost_python-2.7
[03:20:55] <memleak> however that returns this: configure: error: Xinerama library or headers not found
[03:21:22] <memleak> when i remove CC, CPP and CXX vars it goes away but uses my host's compiler
[03:22:11] <cradek> it sounds like you don't have the arm xinerama library available
[03:22:52] <memleak> no i don't.
[03:23:12] <memleak> ah it won't just use the compilers it needs a full ARM distro
[03:24:50] <memleak> i forgot thats how cross compiling works. thanks cradek!
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[10:48:39] <skunkworks> https://github.com/mhaberler/asciidoc-sandbox/wiki/Generating-clock-interrupts-from-Mesanet-cards
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[12:06:34] <jepler> nobody has ever articulated to me what is gained by using a different clock source for the thread timing
[12:08:17] <jepler> is there a bug filed in the mesaflash tracker about the supposed 64-bit problems? I would have told you I was confident I used it on a 64-bit system myself...
[12:12:38] <jepler> why yes there is
https://github.com/micges/mesaflash/issues/4
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[12:23:32] <jepler> hm I don't have a PCI card with EEPROM
[12:23:38] <jepler> 7i80 works fine on 64 bits
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[12:31:29] <jepler> cradek: do you have a spare pci mesa card with eeprom (e.g., 5i25)?
[12:33:20] <skunkworks> jepler, welcome back!
[12:34:30] <skunkworks> Heh - I swapped out the processor on this computer running mach4. 2.4 celeron -> 2.4 pentium4.
[12:35:20] <skunkworks> from this.
http://electronicsam.com/images/KandT/testing/grbl/mach4halscopemorer.png
[12:35:22] <skunkworks> to
[12:35:46] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/mach4P4more.png
[12:35:56] <skunkworks> Still a bunch of overages..
[12:41:17] <jepler> skunkworks: thank you
[12:41:22] <jepler> skunkworks: it was a good trip, but I'm happy to be home
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[12:41:54] <skunkworks> I know the feeling
[12:44:04] <skunkworks> Mach4 path (which doesn't have any path following control yet...)
[12:44:06] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/mach4.png
[12:44:12] <skunkworks> and mach3
[12:44:15] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/mach.png
[12:44:37] <skunkworks> I don't see much difference for it being touted as much improved..
[12:45:27] <skunkworks> I ment this one.. (for mach4)
http://electronicsam.com/images/KandT/testing/grbl/mach4P4plot.png
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[12:50:47] <jepler> hm over at the right side there, is it actually going that far off the path or is it an artifact of axis's backplot sampling? I'm surprised to see a nice arc cut off like that but it is very similar in both images
[12:51:52] <jepler> I see the accelerations are much higher in the one plot as compared to the other
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[12:54:55] <skunkworks> jepler, mach violates slightly less..
[12:55:01] <skunkworks> *mach3
[12:55:34] <skunkworks> I was wondering that also - but at that point the machine is slowing down to make the corner - I would think that the plot would follow.
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[12:56:58] <skunkworks> and anything that I throw at it using linuxcnc follows as expected.
[12:59:07] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/linuxcnc.png
[12:59:25] <skunkworks> It rounds thos few areas as expected..
[12:59:35] <skunkworks> (strait G64)
[13:00:40] <skunkworks> I could try linuxcnc with 150+ accelleration and see if I get similar artifacts..
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[13:08:12] <skunkworks> 150in/s^2 - path looks identical on linuxcnc
[13:08:21] <skunkworks> I think the plot is accurate.
[13:10:00] <jepler> yes, linuxcnc seems to take considerably fewer liberties with the path
[13:10:09] <jepler> though there are still a few I spot at that scale
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[13:10:47] <jepler> if you don't care what path the machine actually follows, it's possible to get done with a part program much faster
[13:12:25] <skunkworks> sure. But with linuxcnc I can say - I want to follow the path within x.xxx... Mach4 has none of that yet. (and mach3 is really crappy IMHO on how it sets path following)
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[13:17:15] <skunkworks> mach3 has 2 main settings. At smaller than what angle - go to exact stop. and how far from the end of the segment to start the blend.
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[13:37:26] <skunkworks_> zlog
[13:37:26] <zlog> skunkworks_: Log stored at
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-06-18.html
[13:40:14] <jepler> I was just thinking of standing still for a few seconds before announcing victory
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[13:52:04] <pcw_home> Linux pcw-G41M-Combo 4.0.5-rt4 #1 SMP PREEMPT RT Wed Jun 17 08:21:17 PDT 2015 i686 i686 i686 GNU/Linux
[13:52:06] <pcw_home> /me is a preempt-rt version hipster
[13:52:48] <pcw_home> \me is a preemt-rt version hipster
[13:53:16] <pcw_home> and obviously a irc newbee
[13:54:58] <pcw_home> the first 4.0 version had pretty large latencies but 4.0.5-rt4 seems fine
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[14:04:09] <Roguish> pcw_home: hey, is there a .iso for the preempt-rt linuxcnc?
[14:04:49] <Roguish> not that i'm lazy or anything, just a whole lot quicker that way.....
[14:05:10] <seb_kuzminsky> Roguish: yes, sort of
[14:05:31] <Roguish> where might one find it?
[14:05:42] <Roguish> i'm game to give it a try.
[14:05:55] <seb_kuzminsky> http://linuxcnc.org/docs/2.7/html/getting-started/index.html#_installing_on_debian_wheezy_with_preempt_rt_kernel
[14:06:27] <Roguish> THANKS.
[14:17:47] <cradek> jepler: 6i24?
[14:20:45] <jepler> cradek: probably would do, yes. the machine I'd test in as a pci-e slot.
[14:21:01] <jepler> has a pci-e slot
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[14:24:57] <jepler> cradek: want to meet for a coffee sometime today at meadowlark?
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[14:31:26] <jepler> apparently there's an rt kernel back in sid ..
https://packages.debian.org/sid/linux-image-4.0.0-2-rt-amd64
[14:31:35] <jepler> based on 4.0.5
[14:33:46] <skunkworks> is sid the next wheezy?
[14:34:46] <mozmck> I think it's debian's unstable or testing branch
[14:34:53] <skunkworks> oh
[14:35:12] <skunkworks> jessie
[14:35:25] <mozmck> Jessie is the current stable release.
[14:35:29] <skunkworks> does jessie have a rt-preempt kernel?
[14:35:57] <skunkworks> pcw_home, how does 4. perform?
[14:36:10] <mozmck> No, but I bet you can use the one from sid
[14:38:54] <mozmck> skunkworks:
https://www.debian.org/releases/
[14:41:20] <pcw_home> skunkworks: seems good. Ive run it a day on the DC7800 at 3 KHz with normal desktop activities and no issues
[14:41:55] <pcw_home> (previous version didn't work as well)
[14:42:02] <skunkworks> 7i73?
[14:42:30] <pcw_home> still at assy but shoud be here in the next few days
[14:42:44] <mozmck> pcw_home: is there any improvement over 3.18?
[14:42:47] <skunkworks> great!
[14:43:03] <mozmck> Any 7i92IDC yet? ;)
[14:43:12] <pcw_home> mozmck: to early to tell
[14:43:16] <cradek> jepler: that would be nice. early afternoon?
[14:43:24] <skunkworks> mozmck, did you get your usb issue figure out?
[14:43:28] <pcw_home> I ve started kitting it for the next build
[14:43:47] <mozmck> skunkworks: yeah, quit using the DC7800 :)
[14:43:49] <cradek> jeez another monsoon is coming
[14:44:00] <skunkworks> oh - motherboard change?
[14:44:23] <mozmck> I need to go back and try a different ethernet card.
[14:44:33] <mozmck> No, changed computers.
[14:44:38] <skunkworks> https://groups.yahoo.com/neo/groups/mach1mach2cnc/conversations/topics/148006
[14:44:55] <skunkworks> isn't that a motherboard change?
[14:44:55] <mozmck> I'm running it on a lenovo now and it runs great
[14:45:03] <skunkworks> :)
[14:45:08] <mozmck> Well, yes, and a bit more too :)
[14:47:30] <skunkworks> is the lenovo a laptop?
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[14:47:40] <jepler> cradek: sure
[14:47:59] <mozmck> No, it's a desktop
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[15:27:58] <cradek> dear everyone on the forum: if your linuxcnc install works for years and then one day it stops working right and gets all flaky IT IS YOUR HARDWARE.
[15:28:05] <cradek> thank you that is all
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[15:29:19] <skunkworks> heh
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[17:39:11] <skunkworks> linuxcnc log of a certain section of gcode
[17:39:12] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/linuxposlog.png
[17:39:26] <skunkworks> mach3 (notice the acc scale change)
[17:39:36] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/mach3poslog.png
[17:40:09] <skunkworks> mach4
[17:40:11] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/mach4poslog.png
[17:40:43] <skunkworks> it definatly goes faster...
[17:40:46] <skunkworks> :)
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[18:49:15] <cradek> skunkworks: what was maxaccel supposed to be?
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[18:49:53] <jepler> root@rat:/home/jepler/src/mesaflash# ./mesaflash --device 5i24 --verify SVST8_4.BIT
[18:49:56] <jepler> Checking file... OK
[18:49:59] <jepler> File type: BIT file
[18:50:01] <jepler> Boot sector OK
[18:50:04] <jepler> hmm mesaflash problem on 64-bit platform not reproduced here
[18:57:21] <jepler> pcw_home: how different are 5i25 and 6i24 from the pov of mesaflash?
https://github.com/micges/mesaflash/issues/4 is reported as failing with a 5i25, but wfm with a 6i24.
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[19:03:13] <skunkworks> jepler: 30in/s^2
[19:03:42] <skunkworks> you see linuxcnc obeys that pretty close.. So I trust the numbers...
[19:04:49] <cradek> so you're getting about 110 out of 30 in mach4, yuck
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[19:04:57] <cradek> they must not have a good way of testing?
[19:05:17] <cradek> I remember before emc2 it was quite hard to guess what was working
[19:05:35] <cradek> no halscope, not even a backplot to compare with a preview!
[19:06:28] <skunkworks> linuxcnc is awesome
[19:06:37] <cradek> jepler: oops I guess I also have a 5i24
[19:06:40] <skunkworks> it looks to have gained atleast 1 second on linuxcnc
[19:06:49] <skunkworks> in that short run
[19:08:29] <cradek> wonder if someone not rob needs to look into our tp bug
[19:08:39] <skunkworks> I just emailed him
[19:09:01] <skunkworks> 'I'm glad you could isolate it to that particular code section. I'll take a look early next week (I'm moving my fiancee's stuff this weekend, so I won't have time before then). If past experience is any indicator, it will be a quick fix.'
[19:09:36] <cradek> sweet
[19:09:49] <skunkworks> yes - then 2.7!! :)
[19:09:54] <cradek> if he can't look into it, I'll try
[19:10:58] <skunkworks> if we don't see anything by the end of next week maybe
[19:11:32] <skunkworks> mach 3 and 4 act pretty identical.
[19:12:13] <cradek> must be the same code
[19:12:32] <cradek> you don't write the same bugs twice - in a rewrite you write all new and refreshing bugs
[19:12:34] <skunkworks> pretty close it seems.
[19:13:42] <skunkworks> the gross errors are in the de-accelleration.. maybe that is a feature by design...
[19:14:11] <skunkworks> I bet it is more - oh crap - I have to slow down and I don't have enough time.
[19:15:44] <PCW> jepler: all the PCI/PCIe cards with flash should be identical as far as flash programming goes
[19:17:08] <jepler> PCW: ok, hm. I wonder what's biting mah and not me then.
[19:18:20] <PCW> Wonder if running Xenomai might make something different
[19:19:23] <jepler> could be I suppose
[19:19:29] <cradek> in linuxcnc definitely (different math library) but surely not in mesaflash
[19:19:39] <cradek> it doesn't even use any rt stuff does it?
[19:19:50] <PCW> its weird, some card access must work since it finds the hm2 cookie
[19:20:03] <PCW> no RT at all
[19:20:16] <PCW> runs fine on stock linux
[19:21:07] <skunkworks> cradek: have you looked at the new tp? does it make any sense to you?
[19:21:18] <jepler> I have this vague memory of some kind of problem verifying the bootloader that I encountered
[19:21:22] <jepler> whether on arm or amd64 I don't know
[19:21:23] <PCW> it looks like it fails to read or compare the boot sector correctly
[19:21:29] <jepler> but I can't find any patches from me that went into mesaflash to cure it
[19:21:50] <cradek> skunkworks: I've only fixed it that one time, and the bug was very overt
[19:22:45] <cradek> skunkworks: I'm not sure I have much of a big-picture understanding of it, so I can probably only do the kind of fixes that are possible without really understanding the code (which are more than you might think)
[19:24:28] <cradek> so, I guess I don't know, because I haven't tried, because I haven't had to try
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[19:30:41] <skunkworks> he has a lot more debugging in there - but I don't know what it means.
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