[Radiance-general] Reduce rtrace runtime

[Greg Ward]

Hi Jia,

You are now experimenting beyond my own experience, so try both and see if it increases your calculation time.  I don't think -lr should affect how long it takes, so there's little harm in increasing its magnitude.

Best,
-Greg

> From: Jia Hu <hujia06 at gmail.com>
> Date: August 31, 2010 10:39:08 AM PDT
> 
> Hello:
>  
> I report the progress. I decrease -lw to 1e-6 and -lr to -12. The results seem consistent enough. If I only change lr to -15 or only -lw to 1e-6, the consistence still exists. So, should I change both?  
>  
> Thanks,
>  
> Jia 
> 
> On Tue, Aug 31, 2010 at 12:11 PM, Greg Ward <gregoryjward at gmail.com> wrote:
> OK, you are talking about run-to-run consistency.  We need to be clear on these things.
> 
> Try decreasing the -lw setting as I recommended to see how this affects run-to-run differences.  There will always be some random variation, especially using the -u+ setting, but on average these should decrease with increasing calculation times.
> 
> Best,
> -Greg