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[00:20:08] <jepler_> well on reading the help for -mieee-fp / -mno-ieee-fp, you'll see that (just like all -m options) they are target-specific
[00:20:46] <jepler_> here, you can see that in fact gcc produces different code for "x < y" in the two situations .. again, on reading the help, you'll see that -mieee-fp is about ieee-correct comparisons
[00:20:50] <jepler_> http://paste.debian.net/122297/
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[00:22:22] <jepler_> I think the key is using "fucompp" rather than "fcompl"
[00:25:12] <jepler_> http://x86.renejeschke.de/html/file_module_x86_id_124.html
[00:25:13] <jepler_> "The FUCOM/FUCOMP/FUCOMPP instructions perform the same operations as the FCOM/FCOMP/FCOMPP instructions. The only difference is that the FUCOM/FUCOMP/FUCOMPP instructions raise the invalid-arithmetic-operand exception (#IA) only when either or both operands are an SNaN or are in an unsupported format; QNaNs cause the condition code flags to be set to unordered, but do not cause an exception to be generated."
[00:26:19] <jepler_> probably in the case of arm there is not this specific distinction
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[00:27:58] <jepler_> it's probably a distinction that doesn't matter anyway -- I don't think that we unmask the IA exception. rather, it's a flag that we've tried varying in the past to get math in kernel space to behave, without knowing exactly what difference it made
[00:28:34] <NTU> i understood maybe a quarter of what you just said.. xD
[00:28:39] <jepler_> me too!
[00:29:05] <jepler_> but the point is, it's a specific flag that applies to x86 / amd64 only, and not to arm. And I should have expected that since it it's a -msomething and not a -fsomething
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[01:31:53] <jepler> how the heck do hal aliases work?!
[01:32:08] <jepler> I know that a pin (and, I think, param) can have one alias
[01:33:14] <jepler> probably I should forget this project (originally conceived as converting all the hal lists to doubly-linked lists). it's the kind of change for no good reason that cradek would council me against
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[01:35:56] <jepler> anyway, I now realize that many of the lists are additionally kept sorted; I think the sensible data structure would therefore be an rb-tree but those are about 24x as complicated as a linked list
[01:36:30] <jepler> all to make hal a few (single digit percentage) LOC shorter, while probably introducing bugs in the process
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[02:06:30] <cradek> :-/
[02:06:47] <cradek> aliases were my bad idea
[02:07:04] <cradek> bad = nobody really uses it so it's kruft that we aren't even sure works right
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[03:05:49] <skunkworks> isn't latency on this machine bad if the servo thread is huge?
[03:05:50] <skunkworks> https://www.youtube.com/watch?v=AzY3S1SCV3I
[03:09:03] <skunkworks> *huge in a reletive term...
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[12:40:58] <KGB-linuxcnc> 03John Thornton 052.6 efbd7be 06linuxcnc 10docs/src/hal/halshow.txt Docs: update halshow description to remove outdated blocks component * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=efbd7be
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[12:46:39] <skunkworks> jthornton, now you can say 'what blocks are you talking about?' ;)
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[12:50:21] <jthornton> in about an hour I can say that :)
[12:51:44] <skunkworks> heh
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[13:52:38] <jepler> jthornton: fwiw there's still a mention of blocks as a component in hal_intro.txt
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[13:59:25] <seb_kuzminsky> first jepler, now jthornton, at this rate we'll have nothing left soon
[14:00:23] <seb_kuzminsky> the commit that removes the last line of code will have a message that says "this removes the last bug from linuxcnc"
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[14:01:21] <CaptHindsight> has anyone else noticed that the servo thread latency is much worse with the kernel on the Wheezy ISO?
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[14:02:09] <CaptHindsight> I'm not sure if it's just on certain processors or the number of cores or what
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[14:04:18] <CaptHindsight> I was just watching the youtube that skunkworks posted 11 hrs ago, ~65,000 servo, 16,000 base
[14:07:12] <skunkworks> I don't know if I have notice a big diffence with what I have tested...
[14:07:31] <skunkworks> I was more wondering what that means.. I would think they would be close to the same..
[14:07:46] <CaptHindsight> I think with the new RTAI fixes and 3.14 it's closer to a 2:1 vs 4:1 ratio between the servo and base latency
[14:09:31] <jepler> if we are using rtai correctly, then the servo thread can never interrupt the base thread
[14:09:43] <jepler> so the servo thread latency is highly driven by the time in the base thread
[14:17:57] <skunkworks> so - I guess the latency in the servo thread probably isn't as critical.. (as long as it is less than 100us - it is probably ok?_
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[14:26:29] <CaptHindsight> it might not matter on a machine tool since hm2_eth works fine for motion using <1Khz periods
[14:31:16] <CaptHindsight> I'm one of the few that use Linuxcnc in out of the ordinary applications that it might effect. That's why memleak is continuing the development of RTAI.
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[14:38:01] <seb_kuzminsky> jepler: jepler/proposed-master looks good to me
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[14:38:38] <jepler> seb_kuzminsky: thanks
[14:39:58] <jepler> I think I've got the SOB git hook written.
http://emergent.unpythonic.net/files/sandbox/pre-receive
[14:40:29] <jepler> typical output in case of a detected problem:
http://paste.ubuntu.com/8403695/
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[15:06:31] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 21f9401 06linuxcnc 10debian/changelog deb: fixup changelog fat-fingering * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=21f9401
[15:09:31] <seb_kuzminsky> i'm trying to train myself to commit with -s
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[15:13:38] <jthornton> jepler, thanks, I missed that one
[15:19:16] <KGB-linuxcnc> 03John Thornton 052.6 45696b5 06linuxcnc 10docs/src/hal/intro.txt Docs: remove blocks description * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=45696b5
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[15:22:38] <NTU> i always use commit -as
[15:23:08] <seb_kuzminsky> watch out for the -a...
[15:25:15] <NTU> why?
[15:33:50] <jepler> NTU: I use git-gui to select what to commit, as a way to review and make sure I didn't do something I forgot about
[15:35:11] <jepler> it also gives me a chance to see and not commit stuff that I shouldn't add, like needless whitespace changes, debugging statements, and the like (not that I always catch everything), and to decide that my work is better split into two commits because I was really doing two different things
[15:36:53] <KGB-linuxcnc> 03Jeff Epler 05master 80f504d 06linuxcnc 10(5 files in 3 dirs) rtapi_string: actually export these APIs * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=80f504d
[15:36:53] <KGB-linuxcnc> 03Jeff Epler 05master 943eb27 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hostmot2.c hm2: drop unneeded workaround for old kernels * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=943eb27
[15:36:53] <KGB-linuxcnc> 03Jeff Epler 05master 259fc06 06linuxcnc 10src/rtapi/rtapi_math64.h rtapi_math64: drop unneeded workaround for old kernels * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=259fc06
[15:36:54] <KGB-linuxcnc> 03Jeff Epler 05master 89fc014 06linuxcnc 10src/rtapi/rtai_rtapi.c rtai: drop unneeded workaround for old kernels * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=89fc014
[15:36:58] <KGB-linuxcnc> 03Jeff Epler 05master 7c94868 06linuxcnc 10src/Makefile 10src/Makefile.modinc.in build: get rid of unneeded $(cc-option) calls * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=7c94868
[15:37:02] <KGB-linuxcnc> 05jepler/proposed-master b221529 06linuxcnc 04. branch deleted * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=b221529
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[19:14:11] <jepler> cradek: can you cast your critical eye at
http://emergent.unpythonic.net/files/sandbox/pre-receive when you have a chance?
[19:19:02] <cradek> does the printed test work?
[19:19:15] <jepler> seems to
[19:20:00] <jepler> $ x=1; f () { x=2; }; f; echo $x
[19:20:00] <jepler> 2
[19:20:17] <jepler> $ x=1; f () { local x=0; }; f; echo $x
[19:20:17] <jepler> 1
[19:20:23] <jepler> and local works too; I'm not sure I knew about local
[19:20:33] <jepler> tested on the oldest freebsd machine I could find, with /bin/sh
[19:20:36] <cradek> sh will never stop surprising me
[19:21:15] <cradek> $ x=1; f () { x=2; }; true|f; echo $x
[19:21:16] <cradek> 1
[19:21:43] <jepler> yeah, that's why I have to do a for `git` instead of a git | while read
[19:21:59] <jepler> in check ()
[19:22:53] <jepler> this is my "test":
http://paste.ubuntu.com/8405445/
[19:22:58] <cradek> it looks good to me
[19:23:27] <cradek> as long as the rev-list will fit on the command line, and it oughta
[19:24:06] <cradek> why didn't it complain about 53d0?
[19:24:12] <cradek> oh, the date
[19:24:33] <cradek> did you try pusing several branches at the same time?
[19:24:50] <cradek> or pushing
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[19:25:02] <jepler> no
[19:25:38] <jepler> as for the commandline length of the 'for `git`' line, this succeeds in executing in both /bin/sh I tested: for i in `yes aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | head -999999`; do :; done
[19:26:02] <jepler> if it didn't, it would be due to a limit internal to sh, not the exec argv size limit
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[19:27:22] <jepler> remote: fatal: Invalid revision range 0000000000000000000000000000000000000000..9bc7121131976abaeb230af80f16b50032d931d1
[19:27:40] <jepler> pushing a new branch makes for an error, so thanks for telling me to try pushing other branches
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[19:32:28] <jepler> http://emergent.unpythonic.net/files/sandbox/pre-receive-v2
[19:32:50] <jepler> OK, now pushing a new branch doesn't fail; instead, every commit from master to the tip of the new branch is checked
[19:33:02] <cradek> that sounds right
[19:33:35] <jepler> the whole push is declined if any commit in any pushed branch is in violation of the sob polic
[19:33:38] <jepler> y
[19:33:45] <cradek> good
[19:33:47] <jepler> remote: [on branch refs/heads/master]
[19:33:48] <jepler> remote: 282abc0 foo
[19:33:48] <jepler> remote: 1436d89 foo
[19:33:48] <jepler> remote: [on branch refs/heads/what]
[19:33:48] <jepler> remote: 81e90de bar
[19:33:52] <jepler> and you're told what commit is on what branch
[19:33:59] <jepler> commits on multiple branches would be listed once for each branch
[19:34:13] <jepler> (for instance, if you made a non-sob commit on 2.6, merged it to master, and pushed both in one go)
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[22:45:32] <KGB-linuxcnc> 03Michael Geszkiewicz 05araisrobo-scurve3 f54c340 06linuxcnc 10(15 files in 5 dirs) First part of limited jerk support * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=f54c340
[22:45:32] <KGB-linuxcnc> 03Michael Geszkiewicz 05araisrobo-scurve3 86eb5fa 06linuxcnc 10src/emc/kinematics/tc.h 10src/emc/kinematics/tp.c Limited jerk support: implement the S-Curve Acceleration with FSM in trajectory planner * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=86eb5fa
[22:45:32] <KGB-linuxcnc> 03Michael Geszkiewicz 05araisrobo-scurve3 f74b182 06linuxcnc 10src/emc/task/emccanon.cc canon: calculate jerk for each move using per axis max values from inifile * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=f74b182
[22:45:36] <KGB-linuxcnc> 03Michael Geszkiewicz 05araisrobo-scurve3 827187b 06linuxcnc 10configs/sim/axis/axis_mm.ini config: add jerk parameter to sim/axis_mm * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=827187b
[22:45:40] <KGB-linuxcnc> 03Michael Geszkiewicz 05araisrobo-scurve3 4ff91a3 06linuxcnc 10src/emc/task/emccanon.cc canon: fix calculating jerk for arc moves * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=4ff91a3
[22:46:13] <skunkworks_> logger[psha]:
[22:46:52] <skunkworks_> micges: how is that going?
[22:47:34] <micges> finally back to testing
[22:48:48] <skunkworks_> neat!
[22:49:15] <micges> it's working, there is a spike on acc to locate and remove and to add scurve to jog motion
[22:50:11] <micges> and add and enable blending to tp, it's totally disabled atm, G64 Pn doesn't work
[22:50:25] <skunkworks_> heh - I was just going to ask that.
[22:51:13] <micges> (code is out there, just locate and extract it from 100k lines diff file ;))
[22:51:30] <skunkworks_> 2 segment blending?
[22:51:40] <skunkworks_> (like the original tp?)
[22:51:46] <micges> skunkworks_: pretty good results even on badly tuned servos
[22:52:04] <skunkworks_> cool
[22:52:34] <micges> I think so
[22:53:35] <skunkworks_> I am sure that would help a lot of people.. it would be cool to have 3 planners (orignal parabolic blending, robs and scurve.)
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[22:54:40] <micges> I needed to base changes on to of 2.6 branch becouse new tp is too complicated to develop this code, Rob offered help to try port changes when scurve will be complete
[22:55:23] <micges> yes indeed, switchable planners without recompiling would be even better ;)
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[23:01:03] <micges> skunkworks_: my old employer built about 10 pick'n'place machines with max speed 96m/min and acc 3500mm/s2, for 24/7 work
[23:02:17] <micges> skunkworks_: they heavly damage one of their mechanic system every 2-3 month due to lack of scurve
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