Failing PowerPC system...

[Jarod Wilson]

On Thursday 13 March 2008 10:46:49 am Jarod Wilson wrote:
> On Thursday 13 March 2008 12:23:18 am Dan Williams wrote:
> > On Thu, 2008-03-13 at 00:01 -0400, Jarod Wilson wrote:
>
> [OS X lockups and sha1sum failures under linux on ppc mac]
>
> > > So anyone have suggestions for diagnosing exactly what component is
> > > starting to fail? My first thought was cpu, then motherboard, and now
> > > memory... I figure memory is probably the easiest place to start
> > > poking, but is there a memtest86 equivalent for PowerPC? If not, I
> > > guess its memory stick roulette, and on to other hardware from there.
> > > Open to any and all suggestions...
> >
> > RAM is definitely the first place to look.  You also might just want to
> > take the RAM out and firmly reseat it.  That's fixed these sorts of
> > things for me a few times before.
[...]
> Just found http://pyropus.ca/software/memtester/ and will see if that
> builds/runs/does something useful under ppc32 linux or os x... There's also
> a non-free (but fairly cheap at $1.39) memtest os x at
> http://memtestosx.org/.

Never mind. Memory stick roulette suggests either all the sticks are bad, or 
something else is failing. Backed off to running my sha1sum test with only 1 
stick at a time, and could reproduce the sha1sum failures on each of them. 
Failures seem to happen more frequently after a number of iterations, like 
after the system heats up a bit. On with the show...

-- 
Jarod Wilson
jwilson at redhat.com