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Re: Re: Hardware question

• To: mathgroup at smc.vnet.net
• Subject: [mg60383] Re: [mg60317] Re: Hardware question
• From: Manuel Schmidt <Manuel.Schmidt at physik.uni-wuerzburg.de>
• Date: Wed, 14 Sep 2005 05:26:36 -0400 (EDT)
• References: <dfp4ca$icf$1@smc.vnet.net> <dfrg7q$fol$1@smc.vnet.net> <200509131006.GAA09651@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

> How long--and how wide :-)
> 
> I have the fastest AMD chip in existence, the FX-55 (unless the FX-57
> is now available), but I couldn't find a mother board that could take
> more than 4GB of RAM.  (And if I put that much in, it would only see
> 3GB of it--a limitation of the bridge chip.)
> 
> Also, does even Linux x86-64 allow 8GB without tweaking?
> 
> --Ron Bruck

I thought, it is no problem, to adress as much memory as you want with
64Bit (about 10^10GByte) and the kernel configuration says, that iommu
(whatever this is) is needed to use more than 4GB of RAM.

By the way: We ordered a dual opteron system with 12GB RAM (max. 16GB)
with a Tyan Board. The Sun Workstations were too expensive (but thank's
for the reply anyway). I will send in some benchmarks, when we are up.

Thank you all for reply!

Manuel

• References:
  • Re: Hardware question
    • From: Ronald Bruck <bruck@math.usc.edu>