[Radiance-general] Error: rtcontrib: fatal - incomplete ray value from rtrace

[David Appelfeld]

Hello Greg,
I am suspecting the machine little bit, because it stop after different
time, sometime it got calculation for 4points sometime for 10, etc.

In the beginning I had only one script for whole grid and run it on 8cores
on one node which was the maximum. But there was probably not enough memory
and it gave me error message that there is not enough allocated memory and
it went to waiting process but it never restarted. It stopped even though I
could still see that the the job which I submited to run the script was
active. Unfortunately I don't remember the whole error message correctly.
Then I have split the calculation up to more scripts with less cores used to
save some time and to avoid previous problem. I have run several scripts
without a problem. Then I have got this message and I have deleted the job
and resubmitted it again without doing any  changes. Some of the jobs run
successfully but some just gave this error message and stopped. Again I
could see that the job was still active but nothing was coming out from
calculations.
As I am writing this I am thinking that the server is getting overloaded and
pause the calculation and then rtrace can not finish the process.
I don't know if this make any sense, but I can try to submit it again and
hope that it will finish.

Could you please say more about signal 9 and if I can do anything with it.

Thank you
David


On 19 May 2011 16:17, Greg Ward <gregoryjward at gmail.com> wrote:

> Hi David,
>
> I've never encountered this error before.  It sounds like your rtrace
> process might be dying, but it would normally report an error message if
> that were the case.  The only case when rtrace doesn't report an error is
> when the system kills it with signal 9.  Does the calculation proceed for
> some time before the error occurs, or does it bail right away?
>
> You say you ran the command successfully before.  What, exactly, did you do
> differently when you got this error?  Are you running it on a different
> machine, which might have data or file size limits in place?
>
> -Greg
>
> > From: David Appelfeld <d.appelfeld at gmail.com>
> > Date: May 19, 2011 3:27:04 PM PDT
> >
> > Dear Radiance users,
> >
> > I am running calculation of grid of illuminance sensors and recently I
> have got several times this error message:
> >
> > rtcontrib: fatal - incomplete ray value from rtrace
> >
> > Does anyone have had this before or do you have any suggestion where I
> should look for mistakes, I guess there could be several reason for this
> error, but I don't know where to start. The rtcontrib command is as
> following. I have run this several times because I split the grid and run
> more simulations, and it was without problems even running several parallel
> simulations in same time using same octree. I am submitting calculations on
> our cluster which operating on Sun machines and using GridEngine.
> >
> > rtcontrib @parameters/vmx_illum.opt -f klems_int.cal -bn Nkbins -fo -o
> results/vmx_test_grid_illum/%s.vmx \
> > -b kbinW @parameters/west.modifier -b kbinS @parameters/south.modifier
> -I+ oct/model_vmx.oct < sensors/grid/vmx_grid_test_illum.pts
> >
> > Thank you for any suggestions
> > David
>
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