[Radiance-general] warning - outgoing BSDF direction 142 collects 107.4% of light

[David Appelfeld]

Hi Greg,

I will try to run the multiplication again with dctimestep and I will
compare them.

Thank you
David

On 23 May 2011 10:08, Gregory J. Ward <gregoryjward at gmail.com> wrote:

> Hi David,
>
> I don't get the warning using your XML file.  I suspect there is something
> amiss with dctimestepcpu, which I don't know anything about.  Maybe it was
> derived from earlier code that summed up the BSDF improperly?
>
> Cheers,
> -Greg
>
> *From: *David Appelfeld <d.appelfeld at gmail.com>
>
> *Date: *May 23, 2011 9:50:43 AM PDT
>
> *
> *
>
> Hi Greg
>
> here is the file. This matrix is only the difference compare to other
> calculations.
>
> I really appreciate your help with my problems with Radiance.
>
> Thank you
> David
>
> On 23 May 2011 09:35, Greg Ward <gregoryjward at gmail.com> wrote:
>
>> Hi David,
>>
>> I don't really know the source of this warning.  Concentration of light
>> shouldn't affect genBSDF, as it measures everything at infinity.  Why don't
>> you e-mail me your problem XML file in an off-list message, and I'll see if
>> I can spot anything.
>>
>> -Greg
>>
>> > From: David Appelfeld <d.appelfeld at gmail.com>
>> > Date: May 23, 2011 8:53:33 AM PDT
>> >
>> > Hi Greg,
>> >
>> > Yes, you understand my email correctly.
>> > I have just find that the material is probably not only the reason. I
>> have the window split into parts parts and only BSDF for bottom part (down)
>> generate this warning. Here is the command for both parts of window, and
>> only difference is the bounding box, which I assume is correct.
>> >
>> > ### this one produce the warning
>> > genBSDF -c 1000 -n 8 -r @BSDFparameters.opt +forward -backward -geom
>> -dim 0 1.98 0 1.13 -0.01 0 \
>> > geometry/materialNew.mat geometry/30_geometry.rad >
>> results/BSDFdown_30_new.xml
>> >
>> > genBSDF -c 1000 -n 8 -r @BSDFparameters.opt +forward -backward -geom
>> -dim 0 1.98 1.13 2.26 -0.01 0 \
>> > geometry/materialNew.mat geometry/30_geometry.rad >
>> results/BSDFup_30_new.xml
>> >
>> >
>> >
>> > I am actually using dctimestepcpu instead of dctimestep because it is
>> much faster, but I guess it is updated too.
>> >
>> > I have got this message before but with dctimestep and not
>> dctimestepcpu. I fixed that in that time but I am not sure what was wrong, I
>> guess it was something with wrong geometry and there were many more
>> dirrection which collected higher %.
>> >
>> > My question could be also understand as: Would this error also appear
>> when there is light concentration in one spot after it is reflected?
>> >
>> > Thank you
>> > David
>> >
>> >
>> > On 23 May 2011 08:32, Greg Ward <gregoryjward at gmail.com> wrote:
>> > Hi David,
>> >
>> > If I understand your e-mail correctly, you are seeing this error using
>> the NEW material, not the OLD one.
>> >
>> > I cannot reproduce your error.  I assume from your earlier e-mails that
>> you are using the latest HEAD of Radiance.  You should make sure that
>> everything is up-to-date and try it again.  In particular, we fixed some
>> problems last December in the normalization of results.  The dctimestep
>> program has also been improved and corrected.
>> >
>> > -Greg
>>
>
>
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