On Sunday 06 November 2016 07:30:18 Erik Christiansen wrote: > On 06.11.16 04:14, Gene Heskett wrote: > > Did that already, Rainer. From an htop report, its currently sitting > > at the pre-x login screen, gtk-greeter. My newest concern is the > > poor bogomips I see in dmesg. Only 153 for all 4 cores. This machine > > has 17682. There may not be enough cycles to run x and linuxcnc. > > That's entirely possible, Gene. It seems unlikely that it will be even > remotely real-time with a bit of X working, if this performance > comparison is any guide: > > https://www.youtube.com/watch?v=dJkHxDjFuNA > > Mind you, I have an example of the compared board on order, and it is > a long time coming. (I think they are accumulating sufficient orders > to do another production run, given the delay.) The udoo board has no > parport, but 20 GPIOs, so a parport ought to be synthesisable. Andy > had a look at using the additional on-board ARM chip for the I/O, but > posted that the CPU-CPU interface lacked appeal. (I suspect that might > be because it's USB, which isn't anywhere near microsecond-splitting > real-time. Pity.) > > My conversations with the Udoo people reveal that the X86 is built to > boot almost any linux distro off SD card or flash stick, so running > LinuxCNC should be a doddle. (But my first one is slated for video > streaming, i.e. replace my desktop with a little 12v box. So I went > for the middle performance one.) > > This page describes the sluggish performance of all the Rpis, even the > pi3, showing a test tabulation giving the pi3 1/10th of the udoo X86's > result: (Skip to 1:40 in the clip, to avoid a load of boring intro > rubbish.) > > https://www.youtube.com/watch?v=_U2dlIEFBJI > > Erik > Most interesting, and reasonably priced too at $29 for the full pine-64 monty. But it reads like video is its main hurrah. Which is why I am curious if the orange-pi could offload the video duty's from the R-Pi-3b. I have a usb<->ethernet gismo, so there is the potential linkage path.
The udoo board is also interesting, and when compared to the total cost and real estate occupied by a pair of pi's by the time space is allocated for interconnections, possibly the better board. But I should have the orange-pi-3 in another 2 weeks, if I can stand the wait. I don't find the 4k hdmi touted on some of these as a advantage due to the cost and non-ready availability of monitors for that format yet. I just checked the tracking, and its getting closer, it was in a Noo Joisey USPO this morning. Next week I expect. :) Thanks Erik. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
