64-Bit Platform Support
Mathematica 5 allows full access to nearly a million terabytes
(billion gigabytes) of memory addressable on 64-bit machines. 32-bit
architectures and previous versions of Mathematica are limited to 4
gigabyte addressing. This limit has become significant in the increasingly
large calculations now being run with Mathematica.
The combination of a 64-bit address space and fast numerics, part of
Wolfram Research's gigaNumerics
initiative, lets Mathematica users solve very large problems.
Mathematica 5 is optimized for a large number of 64-bit CPUs and
operating systems, including Sun Solaris for UltraSPARC, HP-UX for
PA-RISC, IBM AIX for the Power architecture, HP Tru64 Unix on Alpha, Linux
on Alpha, and SGI IRIX on MIPS. The two main benefits are the ability to
solve vastly larger problems than on 32-bit platforms and the speed
increases for big-number arithmetic due to the 64-bit word length.
This 64-bit optimization will also let Mathematica users take full
advantage of planned performance increases in future versions of these
64-bit processors.
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