[aklug] Re: 32 vs 64 bit

On Thursday 21 October 2010 16:16:42 James Tweet wrote:
> I just got a laptop that has a 64-bit processor. On it I put the 64 bit
> version of Ubuntu and I want some info on peoples experiences.
>
> Questions:
> Are there any major differences between the 32 and 64 bit programs?
> Are there any gotchas that I should look out for?
> If I ran the 32-bit version of Ubuntu would it run slower, faster or the
> same? If I run 32-bit software on the 64-bit OS will it effect performance?
> Can I just recompile 32-bit code into 64-bit code?
> Any other advice or observations?
>
> Thanks
> James

Usually memory is the decision maker, > 3Gb you need 64 bit or the bigmem kernel.
Ubuntu does suggest 32 bit for desktop usage, not sure why,

I run 64 bit Debian Squeeze for the 8gb of memory I have, runs like a top. I
mostly do office work, plus run vm's. All my apps are provided by Debian, with
the exception of flash from adobe. I can't tell the difference between 64 and 32
bigmen.

-- 
Peace,
Greg
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