[Radiance-dev] Errors in ambient calculation in 3R7P1?

[Mark Stock]

James,

Since I am not very familiar with rpice and how to get multiple 
processes started on a list of machines, maybe you could help me 
write that portion of the benchmark test? I, too, am eager to try 
it on the 8-proc Opteron system at work.

Also, the rpict times are for serial runs, right?

I'll put your times up, but recognize that we will have to re-do 
everything when the bug is fixed.

Mark

On Sun, 21 Aug 2005, James Lee wrote:

> On 20/08/05, 06:15:10, Mark Stock <mstock at umich.edu> wrote regarding
> [Radiance-dev] Errors in ambient calculation in 3R7P1?:
>
>> I am testing a new benchmark scene to replace the old "mirror
>> pyramid" scene, and I came across some strange behavior in the
>> 3R7P1 release.
>
> I too see some anomalies.  I've run the test on 4 machines and here
> are my pictures:
>
> http://www.blastwave.org/~james/bench4.cthuga.pic
> http://www.blastwave.org/~james/bench4.hastur.pic
> http://www.blastwave.org/~james/bench4.ra.pic
> http://www.blastwave.org/~james/bench4.zeus.pic
>
> My times are here:
> http://www.blastwave.org/~james/bench4.results.html
>
> The best is 3454 seconds.  With 4 CPUs in the Sun Fire V440 and 2
> in the V20z I look forward to an rpiece benchmark test!
>
> I can't seen what is causing the black shadows.  Next I will try
> some different settings - and rpiece for multi-CPU speed.
>
> James.