Re: Only 3.6gb of 64gb RAM recognized by 64bit squeeze
On 09/05/12 20:03, Seyyed Mohtadin Hashemi wrote:
> The motherboard is ASUS KGPED16 fitted with 2xOpteron 6200 series CPUs.
>
> For the 48gb configuration I just did what the motherboard manual
> suggested (i have attached the table), I have tried to shuffle the ram
> dimms and it works no matter which dimms are installed. The dimms are
> identical.
>
> Unfortunately i don't know if the problem was present before or not, I
> have just now discovered that only 3.6gb RAM is recognized. When I was
> building the box I did the customary memtest and it checked so I did not
> check anything else - i have not had any problems with my other boxes
> that use 48gb RAM so i though that this box also worked. I have not had
> time to do more than install OS and the simulation environment on the box.
I suspect you've "proved" the RAM working - though to be totally sure
you'd have to test each stick individually. If you did test each
individual stick, and you're not running an Intel GPU [*1] then the
problem should be the OS.
I'd test each individual stick, ensure firmware is updated, check BIOS
settings (memory remap) and also try a 3.2x kernel?
[*1] AMD boards, large amounts of RAM, and Intel video have been
problematic in the past.
<snipped>
Kind regards
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