I tried Sam's file and there was no difference in completion times on my machine... http://imagebin.org/285347 & http://imagebin.org/285348 Is my machine too slow to gain any benefit?
On Sun, 05 Jan 2014 12:46:39 -0600 sam sokolik <sa...@empirescreen.com> wrote: > well I just ran the program - what seems to hapen is the angle between > the last 2 moves is very small. So it blends them quite early.. > If you say G64P.001 - it then runs the path pretty much the same speed - > makes it all the way to the corner (well within .001) > > http://imagebin.org/285301 You can see the blend between the 2 lines > right in the middle - it is odd though that it seems to be right at x0.. > maybe coincidence.. (that shows both runs - G64 and G64P.001) > > this really isn't a good test to see the performance improvement for the > new tp.. This would.. (and I think it should fit on your machine) The > new tp peaks (with my config) at 270ipm vs 60ipm on current TP. > > g20 g64 g90 > > g0 z.1 > g0 x1 y0 > g1 z-.1 f999 > > o100 repeat [370] > g91 g1 @-.0025 ^4.5 > o100 endrepeat > > g90 g0 z.1 > m2 > > sam > > > On 01/05/2014 11:32 AM, Robert Ellenberg wrote: > > Hi Phill, > > > > Those screenshots look the same, are they duplicates? In any case, the fact > > that it skipped the parabolic blend entirely at that corner is not supposed > > to happen. I'm going to run that test again on my machines to confirm. What > > commit are you building on? I had to do a roll-back of some changes a few > > days ago, so that could be contributing to this issue. > > > > -Rob > > > > > > On Sun, Jan 5, 2014 at 2:18 AM, phill carter > > <phill.car...@oztime.com.au>wrote: > > > >> I ran the arc-arc test after changing Y3 in lines 3 & 7 to Y2 and Y-3 in > >> line 6 to Y-2 to better suit the envelope of my mill. > >> Using 2.6 standard it ran ok, using 2.6 with arc-blend when running line > >> 6, it jumped to line 7 when it reached Y0 rather than Y-2. > >> Screenshots at https://www.dropbox.com/sh/wb05n11coih47ld/gJ6AY1Drch > >> Cheers, Phill > >> > >> On Sat, 4 Jan 2014 01:43:23 -0500 > >> Robert Ellenberg <rwe...@gmail.com> wrote: > >> > >>> I just noticed a weird bug in a recent commit on the circular arc branch > >>> that causes acceleration violations when pausing / stopping. I've rolled > >>> back the circular arc branch to a known good commit to be safe. If anyone > >>> has pulled from that branch in the last three days, please reset to the > >>> current circular-blend-arc-alpha branch, which should point to this > >> commit: > >>> 689e5cb185f87deba62391cd184f21f360ce2246 > >>> > >>> I'll push an update once I'm sure the bug is fixed. > >>> > >>> > >>> On Mon, Dec 30, 2013 at 1:20 PM, Robert Ellenberg <rwe...@gmail.com> > >> wrote: > >>>> On Dec 30, 2013 12:24 PM, "sam sokolik" <sa...@empirescreen.com> > >> wrote: > >>>>> Could you explain your 'small gain'? from what I am seeing - you > >> have > >>>>> to slow down to do a parabolic blend (If I understand it - it is a > >>>>> read-ahead buster) > >>>>> > >>>>> There are paths (like steve.ngc) which would be able to keep the > >> speed > >>>>> up if there was arc-arc, arc-line blends and you can optimize the > >> path > >>>>> (depth). And yes - I know it is a lot of work. > >>>>> > >>>>> (you are doing a great job - it is very impressive how quick you got > >> to > >>>>> this point) > >>>>> > >>>> What i mean by small gain is more statistical. It seems like most > >>>> engraving-type g-code is made up of line segments, so the biggest > >> overall > >>>> gain is from making arc blends between lines, simply because there are > >> so > >>>> many line intersections. It is true that hitting an arc-arc or line-arc > >>>> blend is a lookahead buster, though, so it doesn't take much to cause > >>>> annoying slowdowns like in Steve.ngc. > >>>> > >>>> I'm planning on a little more hardware testing first, but if code like > >>>> Steve's and Julian's is common, then it looks like blends with existing > >>>> arcs are a must-have. Even the Stellabee code showed a little bit of > >>>> slowdown due to the occasional arc , though overall it's a small > >> effect. > >>>> Does anyone else have example code that shows this kind of slowdown? > >>>> > >>>> -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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