[Radiance-general] Another rpiece question

[Jack de Valpine]

Hi Dave,

Rpiece calls on rpict to render "pieces" of the image as determined by 
rpiece. So in other words, you do not start rpiece and then start rpict, 
this is what rpiece does for you. Looking at what you have provided, I 
have to surmise that you are not telling rpiece to divide the view up. 
In order to do this you need to provide  rpiece with -X <divisions in X> 
-Y <divisions in Y>, so for example -X 2 -Y 2 would divide the image 
into a 2x2 matrix. We do not know what your other arguments are so it is 
hard to tell if other things are missing. It might help if you could 
provide the the full command line that you are using to run the job.

-Jack


David Smith wrote:
> I'm a little bit confused about rpiece and multiple processors. So
> rpiece can take rpict arguments, and -PP is an rpict argument telling
> it to fork as necessary, is it a good idea to pass that along to
> rpiece?
>
> Out of curiosity, I tried running enough rpiece -PP commands for each
> processor and wound up with a bunch of rpieces running but only one of
> those had rpicts that were actually doing anything. Additionally, I
> think rpict thought it as doing a sequence of frames. The images
> appear to be rendering, but is this the proper method? Are rpict -PP
> and rpiece mutually exclusive on platforms that support both?
>
> Thanks in advance,
> --Dave
>
>
> P.S. - Here's the process tree from htop:
>
> `[...two more rpiece's like the first two below]
> |
> |
> |
> `- rpiece -v -PP pp -F syncfile @viewpoint @options @arguments
> |   `- rpict -S 1 -PP pp -w -i [...]
> |       `- rpict -S 1 -PP pp -w -i [...]
> `- rpiece -v -PP pp -F syncfile @viewpoint @options @arguments
> |   `- rpict -S 1 -PP pp -w -i [...]
> |       `- rpict -S 1 -PP pp -w -i [...]
> `- rpiece -v -PP pp -F syncfile @viewpoint @options @arguments
>     `- rpict -S 1 -PP pp -w -i [...]
>         `- rpict -S 1 -PP pp -w -i [...]
>             `- rpict -PP pp -w -i [...]
>                 `- rpict -PP pp -w -i [...]
>
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>   

-- 
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

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