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Re: x86_64 vs i386

On Sunday 20 March 2016 14:53:02 Lisi Reisz wrote:

> On Sunday 20 March 2016 18:43:03 Gene Heskett wrote:
> > And since all this is also going to bring in systemd, and I've not a
> > clue if the real app, one that must run, the sim version of linuxcnc
> > will run on a jessie install.
> You can install 32 bit Wheezy - though I agree that I wouldn't at this
> stage. And you can install Jessie without systemd, if you want to do
> so.
> Lisi

I just asked if the lcnc guys have respun their install image for 64 bit 
jessie, in which case I'll probably use it.  But there is some reticence 
in doing the 64 bit for the real machinery control as so far its been a 
quite measurable amount slower, and the real time patches I don't think 
have fully caught up with the 64 bit scene.  Even building it for PAE 
can mess up the realtime performance. That has been driving us toward 
spending a couple hundred on FPGA interface cards that can do thing by 
themselves for a millisecond as they can do the step pulse very steadily 
at 10 microseconds a pulse, where the fastest we have logged in software 
has been a fairly broad error in timing at 25 microseconds per step.
If someplace in the install, it asks, how do I recognize that the 
question refers to systemd as opposed to the tried and proven init?

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>

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