Jon, Machinekit has done some very nice things. Where they fall down is they seem to have no stable release model. It seems that anybody can change anything and there is no fallback to a stable release.
I tried to build Machinekit for the RockPro64 and I ran into changes several months old that had broken the system but were undiscovered. The “developers” were running on their own systems that compiled and ran without testing the current branch. But, there was no way I could find for someone else to check out a system that compiled and ran. Eventually I was able to fix the problems and compile, but, it left me wondering about the whole system. Alan > From: Jon Elson <el...@pico-systems.com> > Subject: Re: [Emc-users] Real-time OS for machine controllers > Date: January 26, 2020 at 9:22:35 AM PST > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > > > On 01/26/2020 09:10 AM, andy pugh wrote: >> On Sun, 26 Jan 2020 at 05:34, bari <bari00...@gmail.com> wrote: >> >>> I think NML is what turns off new developers. >> Most will never need to touch it. I never have, and I have been pretty >> deep inside LinuxCNC. >> > NML has some inefficiencies, but does what is needed for single-node systems. > The place it breaks down, > and why the machinekit group worked to replace it, is that is becomes very > resource-intensive when > you try to share the internal state of LinuxCNC across a network. This is > because the system state is > a single unified chunk of memory. The Machinekit folks used Zero MQ to make > it possible for remote > processes to only receive the specific data structures they request, vastly > reducing network overhead. > Their goal was to be able to make very complicated workcells with multiple > robots passing through shared > 3D spaces without interference. > > But, for a single 3-5 axis machine running ordinary G-code, NML still works > OK. > > Jon _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
