[Bf-committers] Minutes bf-blender project members meeting, jan 19

[Ton Roosendaal]

Hi,

I am not a big fan of special compiler/CPU optimized Blender versions.  
However, given the nature of this project, it will fully depend at a  
volunteer who's interested in maintaining such a version.
If Douglas can manage it, and - of course - doesn't have to break  
compatibility with other platforms, or introduce more complexity for  
the other coders, than he should have our blessings!

This is also part of the "what is cross platform" discussion, still to  
be held & decided on...

-Ton-

On Friday, Jan 24, 2003, at 05:06 Europe/Amsterdam, Douglas Toltzman  
wrote:

> On Thu, 23 Jan 2003, John K. Walton wrote:
>
>> On Thu, 23 Jan 2003, Kent Mein wrote:
>>
>>> In reply to Douglas Toltzman (doug@oakstreetsoftware.com):
>>>
>>> I would say your not going to get much in the way of performance  
>>> boosts,
>>> and the more Linux platforms we have the more confusing its going to  
>>> be
>>> for the average user.  My vote is leave specific builds up to the  
>>> users
>>> that want them. Whats everyone else think?
>>
>> put a stake in the ground, and support only the platforms we said we
>> would. then finish the build/infrastructure, so real feature  
>> development,
>> or porting from evil tree can be done. else this goes on for more  
>> months.
>> if more platforms need to be added, do it later.
>
> I will do my own build and post benchmarks for anyone who may be
> interested.  However, to be fair, I'm not asking to support another
> platform.  The build environment for an i686 build would be the same as
> the build environment for an i386 build, with the exception of the  
> target
> processor in the C/C++ compiler options.  This, of course, would be for
> optimization only.  (the i486 instruction set is significantly improved
> over the i386, and optimizing for the i586 and i686 pipelining can  
> provide
> some improvement in execution time)
>
> I'll post actual benchmarks sometime, in case anyone else is  
> interested in
> maximizing render performance.  Some of our renders have to run  
> overnight;
> even when we split them across multiple 2GHz processors.
>
> Best regards,
> Douglas Toltzman
>
>
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--
Ton Roosendaal  Blender Foundation ton@blender.org