Re: Mathemaica 5.2 are the 64 Bit an illusion !!!....?

*To*: mathgroup at smc.vnet.net*Subject*: [mg60616] Re: [mg60581] Mathemaica 5.2 are the 64 Bit an illusion !!!....?*From*: cmduncan at mines.edu*Date*: Thu, 22 Sep 2005 02:08:10 -0400 (EDT)*References*: <200509210720.DAA08022@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Rob, I believe that the 64 bit only runs on a 64 bit system; not on 'any system'. Run Mathematica v5.2 with the 64bit on a Linux (64bit) or WinXp X64 (64 bit). Secondly, you can verify rather quickly if you have more than 2.5 Gigs of physical memory; b/c if you are not in 64bit environment than you should be capped at the 2.5Gigs or so. Try running your test on a system running within 64bit environment; Windows XP is not 64bit but Windows XP x64 Professional is 64bit. **I have tested my v5.2 on WinXP (x64) and had no problems. I also have 16 Gigs of physical memory also showing up as 16Gigs. It ran very quick to on a 4 dual core Opterons ... yummy!** Chris cmduncan at mines.edu Quoting LumisROB <lumisrob_NOGOOD_ at yahoo.com>: > Verified to fund both on Windows that on other OS : Mathematica 5.2 > and the 64 bit are an illusion. You try on any system to create 4 > numerical random matrixes of 10^4*10^4 elements (they should occupy > around 4GB.Mathematica uses the packeds array in which every number of > car occupies 8 bytes) but.... mathematica interrupts the calculation > for lack of memory . A tool that it affirms to be to 64 bit doesn't > have to do this...... or no? > > Thanks for the help > > Rob > >

**References**:**Mathemaica 5.2 are the 64 Bit an illusion !!!....?***From:*LumisROB <lumisrob_NOGOOD_@yahoo.com>