On 2014-10-28 13:27, Артур Истомин wrote:
On Sun, Oct 26, 2014 at 09:12:14PM -0400, Predrag Punosevac wrote:
On Sun, Oct 26, 2014 at 12:02 PM, Mayuresh Kathe <mayur...@devio.us> wrote:
> 64-bit supposedly supports upto 16 exabytes of memory ('ram').
> would such large capacities actually be possible to ue with
> openbsd for amd64 architecture?
> use-case: working with large in-memory storage for financial applications.
Check for my posts from October or November of last year for dmesg of
machine with 256 GB or RAM and 64 CPUs which ended as a computing node
running Red Hat. I have several computing nodes with 512 GB or RAM in
the lab running Red Hat. if any of them crashes I will use live USB and
send dmesg.
I am interesting what the purpose of such machines. Science? Commercial
usage?

Also, mundane software like firefox, libreoffice or somethink else
experience any abnormal behaviour on such "abnormal" hardware? Of course
if you tested it.

Thanks.
Machines with that amount of ram is not uncommon in hpc.

For what it's worth, I have in my DC about 700 nodes fitted with 256GB of ram.
The only limitation to putting more in it is actually the price and 
availability of higher density modules.
Because in such system where each compute node is a 1U or half U server, 
you won't usually be able to fit more than 16 modules in each.
With the comings new DDR4 module being as large as 128GB we will 
eventually see 1U servers fitting more that 1TB of ram.


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