Re: Re: Hardware question

*To*: mathgroup at smc.vnet.net*Subject*: [mg60359] Re: [mg60317] Re: Hardware question*From*: János <janos.lobb at yale.edu>*Date*: Wed, 14 Sep 2005 03:27:24 -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

Apple's G5 can take and use 8GB. János On Sep 13, 2005, at 6:06 AM, Ronald Bruck wrote: > In article <dfrg7q$fol$1 at smc.vnet.net>, David Bailey > <dave at Remove_Thisdbailey.co.uk> wrote: > >> Manuel Schmidt wrote: >>> Hello, >>> >>> does somebody know, what hardware is best for a huge mathematica >>> calculation, that needs lots of memory? >>> I think of minimum 8GB memory and the fastest possible processors >>> (probably opterons???). >>> >>> However, it should be a personal computer. >>> >>> Is it better to run it under Linux or Windows? >>> >>> Thanks, >>> >>> Manuel Schmidt >>> >> Hello, >> >> Really, that is equivalent to the question "How long is a piece of >> string". >> >> One thing that is important is that if you are going to get 8GB of >> memory, you must make sure you install the 64-bit version of >> Windows (or >> whatever) and the 64-bit version of Mathematica - otherwise, most of >> that memory will just sit there idle. >> >> I would tend to go for Opterons, if only because AMD took a big >> risk in >> introducing a rational 64-bit architecture and forcing Intel to >> follow >> them - they deserve to get the business! >> >> Before spending a lot of money, it may be worth getting someone to >> look >> at your code because it is very easy to write Mathematica code that >> works, but is horrendously inefficient. > > 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 ---------------------------------------------- Trying to argue with a politician is like lifting up the head of a corpse. (S. Lem: His Master Voice)

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