Thank you Eric. Your observation may be correct . The Nvidia driver installation is a big issue for many users that are not using LCNC . I will remove the drivers I've installed and I will go for the Vesa solution. The Gigabyte and ASRock mobo seems to be better than ASUS for LCNC. And to have a separate graphic card it's not a solution anyway. My BIOS do not have much parameters to be setup specifically to get a better performance for real time . I've made the isolcpu=1 modification but numbers are always pretty high (60000-65000 on both threads) but more stable as I can see.
Alex On Fri, Nov 7, 2014 at 7:30 PM, Eric Keller <eekel...@psu.edu> wrote: > Vesa worked fine. The open source Nvidia drivers were not good for > latency. You may wish to go with an interface that doesn't use 3d. I > believe that the problem with the Nvidia system is that they want a > specific kernel layout and it doesn't work with the RTAI kernel, but I > can't be sure > > On Fri, Nov 7, 2014 at 12:32 PM, alex chiosso <achio...@gmail.com> wrote: > > > Hi Eric . > > Did you get good latency numbers with Vesa drivers. > > My need is to get the best latency numbers is possible. > > If it's better to use the Vesa drivers I will do that . > > Nowadays the two biggest Graphic cards/chips manufacturers seems to be > > Nvidia and ATI so why it is so hard to get this cards work with their > > proprietary drivers ? > > Maybe it is a stupid question but I remember that somewhere in the LCNC > > documentation there is also the suggestion to use a graphic card instead > of > > a mother board integrated one. :- ( > > I used a ASUS mobo with a ASUS GPU thinking about a proper solution but > > maybe I was wrong . > > > > Alex > > > > On Fri, Nov 7, 2014 at 6:10 PM, Eric Keller <eekel...@psu.edu> wrote: > > > > > Last time I set up a lcnc system I had a lot of trouble with the Nvidia > > > drivers -- they wouldn't install. I did go with Vesa. I don't really > > > think it's a problem. > > > > > > On Fri, Nov 7, 2014 at 11:46 AM, alex chiosso <achio...@gmail.com> > > wrote: > > > > > > > Hi Dave . > > > > Actually seems that the NOUVEAU drivers are used as I can see into > the > > > > Xorg.0.log file I've attached . > > > > Do you suggest to use the Vesa instead of Nouveau ? > > > > > > > > Alex > > > > > > > > On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline < > > > dave.thearchiv...@gmail.com > > > > > > > > > wrote: > > > > > > > > > Nvidia is a known problem see > > > > > > > > > > > > > > > > > > > > http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards > > > > > try those solutions and any other graphics card you have lying > around > > > > > > > > > > Dave Caroline > > > > > > > > > > On 07/11/2014, alex chiosso <achio...@gmail.com> wrote: > > > > > > Hi to all. > > > > > > I've built a new desktop pc (honestly I bought the hw components > a > > > > couple > > > > > > of years ago) to use it for LCNC application hoping to get a good > > > > latency > > > > > > numbers . > > > > > > The mother board is an ASUS P5KPL SE ; > > > > > > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce > > > 8400GS > > > > > chip > > > > > > ; > > > > > > The Processor is an Intel Pentium E6500 Dual Core ; > > > > > > The Ram is a 2GB DDR2 800Mhz ; > > > > > > The HD is a Seagate Barracuda 7200.12 ; > > > > > > > > > > > > I've installed LCNC using the pre-compiled version CD 2.6.1 with > > > Debian > > > > > > Wheezy . > > > > > > > > > > > > After the installation done and the upgrade using the update > > manager > > > I > > > > > ran > > > > > > the Latency test application to see the latency numbers and the > > test > > > > was > > > > > > not good (I mean about 70000 Max Jitter on both the threads) . > > > > > > > > > > > > I've not modified the GRUB for ISOLCPU=1 yet . > > > > > > > > > > > > But what I can see is that the Nvidia Card is not using the > > > proprietary > > > > > > drivers . > > > > > > > > > > > > I tried few different ways using "solutions" from the net but > there > > > is > > > > no > > > > > > way to get the Nviadia drivers to be loaded properly. > > > > > > > > > > > > I post the files : > > > > > > - Xorg.0.log.old that show some information on the Nvidia drivers > > > > loading > > > > > > issue ; > > > > > > - Xorg.0.log that show the information after a correct startup of > > the > > > > PC > > > > > > without invoking the use of the Nvidia proprietary Drivers. > > > > > > > > > > > > The last test I did was reinstalling the LCNC CD (so a clean of > all > > > the > > > > > > Nvidia trials tests I did) and try this solution > > > > > > <https://wiki.debian.org/NvidiaGraphicsDrivers#configure> from > the > > > > > Official > > > > > > Debian Wiki site . > > > > > > > > > > > > The problem is that with the invoking of the Nvidia Drivers load > > > > > procedure > > > > > > I can't get the system booting completely and the display is > > showing > > > a > > > > > > blinking cursor. > > > > > > > > > > > > Maybe the system stops when is loading (or trying to load) the > > Nvidia > > > > > > Drivers . > > > > > > > > > > > > The only way-out that I found is to remove (or rename) the file > > > > > > > > > > > > /etc/X11/xorg.conf.d > > > > > > > > > > > > and perform a system reboot. > > > > > > > > > > > > As it's clear I'm not familiar with Linux to be able to solve > this > > > > > > issue so I'm asking your help. > > > > > > > > > > > > > > > > > > Regards > > > > > > > > > > > > Alex > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > Emc-users@lists.sourceforge.net > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
