[Radiance-general] Strange gendaylit behavior

[Rob Guglielmetti]

Hi David, 

The direct normal has been zero for several other timesteps with no error, though. I did temporarily change the code to where if direct or global was zero, I reset it to one, but I'd like to pass in the actual values, if possible, ya know? Maybe I'll try (if 0.0 then 0.0000000001) like you tried, and see how the results come out. What platform are you on? I'm not seeing the "Illegal instruction: 4" error ever...

- Rob



On Oct 7, 2011, at 5:13 PM, David Appelfeld wrote:

> Hi Rob,
> by using your command I am getting error to, but slightly different.
> 
> David$ gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> # gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> Illegal instruction: 4
> 
> Is there any reason by using 0.0 as direct normal illuminance after -l option. By using 0.00000000001 daylight works. I am not sure if this is what you are looking for. 
> 
> 
> I am also getting same error "Illegal instruction: 4" when calling gendaylit by full path. 
> 
> # gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.00000000000001 1926.55187439894
> # Ground ambient level: 4.7
> 
> void light solar
> 0
> 0
> 3 8.220e-13 8.220e-13 8.220e-13
> 
> solar source sun
> 0
> 0
> 4 -0.907109 0.416674 0.059465 0.533000
> 
> void brightfunc skyfunc
> 2 skybright perezlum.cal
> 0
> 10 1.164e+01 9.485e-01 -0.836705 -0.013368 15.728716 -4.116213 1.003109 -0.907109 0.416674 0.059465 
> 
> 
> 
> David
> 
> 
> 
> 
> On 7 October 2011 15:42, Rob Guglielmetti <rob.guglielmetti at gmail.com> wrote:
> I probably have an odd configuration on my machine, but I'm having trouble diagnosing this problem. 
> 
> If I call gendaylit with these parameters, I get junk in the output sky description:
> 
> rgugliel$ gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> # gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> # Ground ambient level: nan
> 
> void brightfunc skyfunc
> 2 skybright perezlum.cal
> 0
> 10 nan nan nan nan nan nan nan -0.907109 0.416674 0.059465 
> 
> OK, so where is my gendaylit?
> 
> which gendaylit
> /usr/local/bin/gendaylit
> 
> OK, so if I call that specific executable, I get this:
> 
> rgugliel$ /usr/local/bin/gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> # /usr/local/bin/gendaylit 7 19 19:00:00 -a 39.740000000000002 -o -105.18000000000001 -m -105.0 -L 0.0 1926.55187439894
> Warning : skyclearness or skybrightness out of range ; 
>  Check your input parameters
> Warning : skyclearness or skybrightness out of range ; 
>  Check your input parameters
> Warning : skyclearness or skybrightness out of range ; 
>  Check your input parameters
> Warning : skyclearness or skybrightness out of range ; 
>  Check your input parameters
> sky clearness or sky brightness out of range 1.000000     74434650220083800562091791272162503847257343566676277805826026351882917179884747180439543170910077023728890544527980267722524523537281630301534426272391252609311406925055899551665934885241866457242010167443382973430564036426324486211258871034413056.000000
> 
> which is much more useful, because those STERR warnings I can check for and use an alternative sky generation method for that timestep, or double check input parameters. The former method slips past my gendaylit STERR checks and then oconv barfs on that bogus sky description. 
> 
> I don't THINK I have any other copies of gendaylit lying around, certainly not in my path, but it appears that either gendaylit behaves differently when called with a full path (unlikely) or I have something else going on. I have lost many hairs today grinding on this. This is stupid. Please help. 
> 
> - Rob
> 
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