[sf-lug] Memory(dram) may cause some problems

[Sujit K M]

On Wed, Nov 25, 2015 at 10:48 AM, Ken Shaffer <kenshaffer80 at gmail.com> wrote:
> We do tend to forget the hardware bugs, since we mostly deal with software
> bugs.

Interestingly I would like to bring to notice something this post
liked to point out below URL.
http://googleprojectzero.blogspot.in/2015/03/exploiting-dram-rowhammer-bug-to-gain.html

> Way back when at work, got a pair of dual cpu SGI machines, but with only
> one CPU installed.  When the  second CPUs were installed, the machines
> wouldn't boot.  I noticed the new CPUs, while identical in specs, had a
> different stepping number, and suggested arranging them so the old CPUs were
> in one machine, and the new ones in another -- worked perfectly then.

I guess nowadays the chipset is more at fault for this. You could get
a very sleek Chipset
and It could blow up setup. There is much furthur support to enhance
your hardware
upgrades now than before.

http://www.cyberciti.biz/tips/plan-for-linux-server-memory-upgrade.html


> Ken
>
> On Tue, Nov 24, 2015 at 2:31 PM, Bobbie Sellers
> <bliss-sf4ever at dslextreme.com> wrote:
>>
>> My friend Odd,
>>     a system administrator in Norway sent me this URL
>> for an article,
>>
>> <http://spectrum.ieee.org/tech-talk/computing/hardware/intel-and-micron-announce-revolutionary-memory>
>>
>>     I remember back a bit when we learned that our Amiga and Windows
>> memory
>> simms had to be carefully matched to avoid timing problems, I think Unix
>> handled
>> that better but the original information is lost to me,  Linus might have
>> been working
>> on Linux but no idea.
>>     Anyhow the information about dram being less reliable than we were
>> lead to believe
>> was developed when operations using large amount of dram were surveyed as
>> to
>> the cause of failures.
>>
>>     Bobbie Sellers
>>
>>
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>
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