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 ------------------------------------------------------------------------------ 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
