Ah - that makes sense. As far as the acceleration constraint violation below - I think you also still have this problem that was fixed recently.
http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=commit;h=bfb837ef97113a311b9e431855a7390ddcc34c80 sam On 12/16/2013 10:56 AM, Robert Ellenberg wrote: > That's by design, though it's not optimal. I abort optimization if a > segment is already in progress , to prevent stepping on tp 's toes. Also, > the optimization doesn't run on the last segment in the queue, because that > segment has the potential to be shortened by a future blend arc. > > Both of these problems are fixable. I was looking into how to detect "end > if file" in the code, and it seems that the interp_waiting state > corresponds to the interpreter running out of valid moves (rather than just > having a full queue). If this is the case, then a simple check should be > enough to flag the last move. Similarly, I could make blend arc creation > work on the unchanged portion of a segment in progress. > > Rob > On Dec 16, 2013 11:34 AM, "sam sokolik" <sa...@empirescreen.com> wrote: > >> This program (which should be tangent arcs) seems to slow down to a stop >> at the beginning of the first and last arc. >> >> % >> (1" square with rounded corners) >> G90 G54 G20 >> G64 >> G0 X0 Y.25 Z0 >> G1 Y.75 F50 >> G2 X.25 Y1 I.25 >> G1 X.75 >> G2 X1 Y.75 J-.25 >> G1 Y.25 >> G2 X.75 Y0 I-.25 >> G1 X.25 >> G2 X0 Y.25 J.25 >> M30 >> >> >> >> On 12/15/2013 9:40 PM, sam sokolik wrote: >>> Arcspiral.ngc now runs at a peak of 400+ipm - only switches to parabolic >>> blends at the very end of the program (probably where the arcs are not >>> 'tangent' enough). Awesome! >>> >>> steve.ngc runs in 7 seconds and seems to slow down down in 2 spots >>> (switches to parabolic blends..) Awesome! :) >>> >>> stellabee1 runs a lot faster but.. When running G64P.005 - I get a >>> overage around line 44545. >>> >>> Here is a short example that shows the errror - if you run the program >>> farther - it will have a hand full more of these. says line 23 >>> >>> http://imagebin.org/282452 >>> >>> G20 >>> G0 Z0.0120 >>> G17 G40 >>> G80 G90 G94 >>> S1000 M3 >>> (G04 P3) >>> G64P.005 >>> F999.0000 >>> G18 >>> F999.0000 >>> G0 X3.0560 Z-0.1065 >>> X3.0660 Z-0.0958 >>> G2 X3.0800 Y3.3700 Z-0.0853 I-0.0126 K0.0314 >>> G1 X3.0940 Z-0.0824 >>> X3.1040 Z-0.0889 >>> G3 X3.1160 Y3.3700 Z-0.0814 I0.0122 K-0.0061 >>> G1 X3.1220 Z-0.0830 >>> X3.1260 Z-0.0824 >>> X3.1340 Z-0.0735 >>> X3.1380 Z-0.0745 >>> X3.1420 Z-0.0791 >>> X3.1500 Z-0.0941 >>> X3.1600 Z-0.1020 >>> X3.1660 Z-0.0990 >>> X3.1740 Z-0.1000 >>> G3 X3.1880 Y3.3700 Z-0.0922 I0.0188 K-0.0172 >>> G3 X3.1960 Y3.3700 Z-0.0736 I0.0697 K-0.0189 >>> G1 X3.1980 Z-0.0706 >>> M2 >>> >>> Great work!! >>> sam >>> >>> >>> >>> >>> >>> On 12/15/2013 03:37 PM, Robert Ellenberg wrote: >>>> I think I fixed the issue in the latest commit. It turned out that I >> wasn't >>>> checking the type of segment properly in an error check, so it would >> flag >>>> some arcs as not tangent even when they were. Along with some other >> fixes >>>> to get acceleration right, it should be running at nearly full speed >> now. >>>> Since my last push, I also added a few optimization fixes that should >> run >>>> code like stellabee a bit faster. In particular transitions from >> tangent to >>>> parabolic blending in some cases forced two unnecessary exact stops, >> which >>>> caused more ripple and slowdown than would otherwise be expected. >>>> >>>> I also ran the 3D chips code on my Sherline, off of an Atom CPU. I >> didn't >>>> see any RT interruptions even with the base thread running. My plan for >>>> testing next is to set up a version of the test config with a base >> thread, >>>> and spoof an e-stop. This way, the parallel port can be disconnected to >> do >>>> build tests. >>>> >>>> -Rob >>>> >>>> >>>> On Fri, Dec 13, 2013 at 2:44 PM, sam sokolik <sa...@empirescreen.com> >> wrote: >>>>> I forgot to say - I just pulled your latest changes before testing... >>>>> >>>>> sam >>>>> On 12/13/2013 1:37 PM, Robert Ellenberg wrote: >>>>>> Can you send a link to that G code? I'd like to run it myself and see >> if >>>>> I >>>>>> can pinpoint the slowdown. I've identified and fixed a bunch of little >>>>>> slowdowns over the last week, so the problem may already be solved. >>>>>> >>>>>> Thanks! >>>>>> Rob >>>>>> >>>>>> >>>>>> On Fri, Dec 13, 2013 at 2:00 PM, sam sokolik <sa...@empirescreen.com> >>>>> wrote: >>>>>>> Couple of things. >>>>>>> >>>>>>> arc-arc blends are slower than current TP... current tp does >> arcspiral >>>>>>> at a peak of 100ipm while the new TP does it at about 70. >>>>>>> So current TP http://imagebin.org/282155 1:19 minutes >>>>>>> New TP http://imagebin.org/282156 1:51 (you can see it does >> parabolic >>>>>>> blends) >>>>>>> >>>>>>> The neat thing is.. If you do a G64P.003 the naive cam detector >>>>>>> converts the short arcs to line segments and you get... >>>>>>> >>>>>>> http://imagebin.org/282156 21 seconds >>>>>>> >>>>>>> that peaks at almost 400ipm >>>>>>> >>>>>>> sam >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> On 12/12/2013 2:49 PM, Robert Ellenberg wrote: >>>>>>>> I agree with Sam that we're ready for testing from other users. >>>>> However, >>>>>>>> there are a few features that we may want to add before a merged >> into a >>>>>>>> main build. One limitation now is that there are a bunch of >>>>> configuration >>>>>>>> variables that are hard coded: >>>>>>>> >>>>>>>> - Optimization depth (currently set to ~40 segments) >>>>>>>> - Enable / disable arc blend flag >>>>>>>> - Max feed override (for sizing blend arcs, assumed to be >> 200%) >>>>>>>> Given these extra settings, I'm curious what the best way is get >> them >>>>>>> from >>>>>>>> an INI file to the trajectory planner. For the experts, how are INI >>>>>>>> settings propagated into motion currently? Is there an easy way to >> tack >>>>>>> on >>>>>>>> a few more config options? >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Rob >>>>>>>> >> ------------------------------------------------------------------------------ >>>>>>>> Rapidly troubleshoot problems before they affect your business. >> Most IT >>>>>>>> organizations don't have a clear picture of how application >> performance >>>>>>>> affects their revenue. With AppDynamics, you get 100% visibility >> into >>>>>>> your >>>>>>>> Java,.NET, & PHP application. 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Start your 15-day FREE TRIAL of >>>>> AppDynamics >>>>>>> Pro! >>>>>>> >> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk >>>>>>> _______________________________________________ >>>>>>> Emc-developers mailing list >>>>>>> Emc-developers@lists.sourceforge.net >>>>>>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>>>>>> >> ------------------------------------------------------------------------------ >>>>>> Rapidly troubleshoot problems before they affect your business. Most >> IT >>>>>> organizations don't have a clear picture of how application >> performance >>>>>> affects their revenue. With AppDynamics, you get 100% visibility into >>>>> your >>>>>> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of >>>>> AppDynamics Pro! >>>>> >> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk >>>>>> _______________________________________________ >>>>>> Emc-developers mailing list >>>>>> Emc-developers@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>>>>> >>>>>> >>>>> >> ------------------------------------------------------------------------------ >>>>> Rapidly troubleshoot problems before they affect your business. Most IT >>>>> organizations don't have a clear picture of how application performance >>>>> affects their revenue. With AppDynamics, you get 100% visibility into >> your >>>>> Java,.NET, & PHP application. 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