32-bit or 64-bit
Karl F. Larsen
klarsen1 at gmail.com
Fri Jun 5 17:36:10 UTC 2009
> Chris Jones wrote:
>>> It does; 64-bit is a lot faster, especially for media conversion (don't
>>> know why exactly, but it's the case).
>> The reason is when building source code, the compiler has to accommodate
>> all platforms that are available. As 64 bit processors are a lot newer
>> than 32 bit ones, the compiler is able to use features in 64 bit mode it
>> cannot in 32 bit mode.
>> For instance SSE instructions - The compiler knows that *all* 64 bit
>> machines have these, so it can safely use them to speed up various math
>> routines. It cannot do this in 32 bit mode, as not all 32 bit processors
>> support these. This can make a difference, particularly in heavy number
>> crunching (i.e. media conversion).
>> cheers Chris
> I knew that, I just didn't realise why it only seemed to be media
> conversion that significantly benefited. Thanks for clarifying it :)
I have now a computer that is 32 bit and I do write both C and C++
code on it. Not big programs but little ones that together do good
things. For example I have a device that tells me the impedance of a
circuit. But I want to know the actual R + or - jX of the circuit. So I
wrote a C program that uses Impedance and SWR to give the desired
result. I works just fine and took no time at all to compile.
So to the person wondering which to use 32 or 64 bit, I suggest that
the world has done well with 32 bit and even with Ubuntu, the 32 bit is
easier to get working well :-)
Karl F. Larsen, AKA K5DI
PGP 4208 4D6E 595F 22B9 FF1C ECB6 4A3C 2C54 FE23 53A7
More information about the ubuntu-users