[Bf-committers] 64 bits Blender usability warning!

[Ton Roosendaal]

Hi,

Thanks for the offer, but I am pretty sure I can redo these errors  
simply. Of course you're welcome to track the bug for me! :)

For now; just be extremely cautious with the 64 bits version... there's  
actually no real reason to use a 64 bits build, unless you use projects  
that demand a lot of memory (>2 GB).
Blender also stores a lot of pointers in its data structures, which  
means that memory consumption for editing and rendering will increase  
in 64 bits with like 25-30%. So if your system has less than 2 GB of  
memory you'll be better off using 32 bits.

For tests it is interesting to check on speed benefits though...

-Ton-

On 5 Mar, 2006, at 11:17, Mats Holmberg wrote:

> Ton Roosendaal wrote:
>
>> Hi,
>>
>> I've received a bugtest file from our Plumiferos friends, and noticed  
>>  they are using a 64 bits compile of Blender. Reading the file back  
>> in  32 bits gave SDNA errors, which indicates there's a very serious  
>> issue  to solve.
>>
>> I knew there was an old issue with mixing 32 and 64 bits blender  
>> files  for libraries, but this error I've got no real clue for yet.  
>> No time  now either. :)
>>
>> We got in Orange studio a very nice sponsored AMD 64 system (thanks   
>> Sun!), which I intended to put at home for doing the full 64 bits   
>> cleanup after the movie is ready. Until then we should really   
>> discourage to use Blender 64 bits binaries for any serious project,   
>> apart from tests.
>>
>> -Ton-
>>
>> ---------------------------------------------------------------------- 
>> -- --
>> Ton Roosendaal  Blender Foundation ton at blender.org   
>> http://www.blender.org
>>
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> I'm working on a short animation ATM (school project), and noticed  
> something too - I've animated everything with my own Amd64 build. I  
> wanted to render my animation using 32bit machines also, but on  
> opening some of my files I get a segmentation fault (amd64 works ok).  
> This might be related, dunno, could also be related to some linking  
> problem.
>
> If you like I can send you a file or two for testing, when you need it.
>
> Cheers,
> Mats
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--
Ton Roosendaal  Blender Foundation ton at blender.org  
http://www.blender.org