[Radiance-general] Reduce rtrace runtime

[Jia Hu]

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
>
> > From: Jia Hu <hujia06 at gmail.com>
> > Date: August 31, 2010 8:47:50 AM PDT
> >
> > Hello Greg:
> >
> > For example, for the sky same conditions, I run twice and the results are
> as follows (each means illuminance of a point). The sky luminance
> distribution is generated by the gendaylit program.
> >
> > MM:1-DD:2-Hour:9-Angle:0
> > 802.381766
> > 614.023063
> > 395.616407
> > 319.185386
> > MM:1-DD:2-Hour:9-Angle:0
> > 907.889248 (larger than 802)
> > 614.848339
> > 393.397623
> > 294.201388 (smaller than 319)
> >
> > Cheers,
> > Jia
>
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