Re: [CAD_CAM_EDM_DRO] Minimum hardware for EMC

Well at least I learned some thing new today!!! :)

Mark

On Thu, 2 Nov 2000, Jon Elson wrote:

>
>
> Mark Peugeot wrote:
>
> >
> > I am a total newbie but I will give it a shot.
>
> Yes, he asked specific questions, re a specific CPU and EMC.
>
> > > 1) Will EMC run OK on this system?
> >
> > Depends really on the ram requirements.
>
> But also, CPU speed and memory page organization (it's different on
> 386-486 machines
> and Pentium architectures).
>
> > > 2) Will the slower system affect feed rates, etc.
> >
> > a 486 processor is actually pretty fast when you get it away from
> > bloated
> > software.
>
> Unfortunately, EMC has a bit of bloat in it! It was never written from
> the ground up
> to be efficient, as a good part of it was begun as an academic
> exercise. All
> calculations are done in floating point, and 486's are not fast in that
> regard.
> The Tk/TCL GUI is DEFINITELY not efficient, it is just a little better
> than the
> alternatives!
>
> > > 3) Obviously, with 8mb of RAM, I've got lots of swap. Will swap
> > > use inhibit EMC performance?
> >
> > You should not swap on a real time or near realtime applications...
> > such
> > as running a lathe! I would think that this could lead to serious
> > problems.
>
> But, of course, the RT environment NEVER swaps, it is impossible for it
> to swap.
>
> > I would add a few more megs of ram, I think other than that you have
> > no
> > real issues with a 486. I have no knowledge of the EMC software, but
> > if
> > you run it under linux and begin swapping, it is gonna get ugly. 32
> > Megs
> > of ram is cheap!
>
> 32 Meg may not FIT on an old 486 MB! And, there are REAL issues with
> the 486,
> most notably the different memory page organization, which strongly
> affects the
> shared memory region that is the only communication between the RT
> components
> of EMC and everything else.
>
> Jon
>
>
>
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