[GRASS-user] 32 bit OS .. 64 bit OS

gary lists at lazygranch.com
Fri Aug 3 04:04:17 EDT 2007

On the AMD64, 64 bit code uses the extra internal registers. Some math 
operations run faster, though this has only been benchmarked under X64, 
not linux.

I never had a grass run take more than about 2Gbytes of DRAM. Isn't 
there a hard limit on the memory used by grass? There is an option 
during the compilation process for large files, so I assume the memory 
allocation isn't completely dynamic.

Glynn Clements wrote:
> RAVI KUMAR wrote:
>> GRASS GIS on 64 bit OS, is good news, but is the
>> progress
>> only in the 64 bit GRASS version ??
>> What are the differences (advantages) for shifting to
>> the 64 Bit OS. I do not have ready access to any 64
>> bit OS system. The latest (is there any) 32 bit OS
>> GRASS, 
>> is this not equivalent to 64 bit GRASS ??
> The only differences between running GRASS on a 32- or 64-bit OS are
> those provided by the OS, e.g. the ability to use more than 4GiB of
> memory for a single process, or the ability to read files larger than
> 2GiB using ANSI stdio functions.

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