On Wed, 12 Apr 2000, John R Pierce wrote:
> John R Pierce wrote:
> >whoops, no they haven't. If I launch X-windows or something while two
> >mersenne instances are running, it gets ILLEGAL SUMOUT on both instances
> >within a few seconds. Uh oh. sounds like something wrong with the system
> >architecture.
>
> George Woltman answers...
>
> > not necessarily. In Windows, ILLEGAL SUMOUTS often occur from
> > drivers or the OS not saving FPU state properly. Maybe Linux has the
> > same trouble. If you don't start to get the other error types, I'd
> suspect so.
>
>
> Ok, then a question for the group at large... Anyone else running 2
> instances of mprime on linux on any sort of dual PPro/P-II/P-III/Xeon
> system? Using something along the lines of 2.2.13ish (This is a Redhat 6.1
> "SBE" edition). Anyone see Illegal Sumouts when they do things like startx
> then stopx or maybe change display modes? For what its worth, this
> particular system has a ATI Rage128 onboard and is using XF86_SVGA 3.3.6.
I have two instances of mprime running on a dual Celeron machine under
RH6.0 (with the 2.2.14 kernel) that seems to be working fine. However, I
do NOT have any GUI installed as there is evidence that the Abit BP6 board
might have trouble with dual processors and GUI interfaces (under both
Linux and WinNT).
I did have a problem with having the rounding error being too big which
turned out to be a memory problem. Once I put quality memory into the
box, all errors disappeared. Uptime is around 60 days currently...
Kel
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