pvm povray help

Luc Vereecken Luc.Vereecken at chem.kuleuven.ac.be
Thu Mar 21 02:39:24 PST 2002

At 12:32 21/03/02 +1100, Drake Diedrich wrote:
>On Wed, Mar 20, 2002 at 08:11:33PM +0000, Heger The Horrible wrote:

>   The next problem you will likely encounter :) : povray with PVM still
>reads the scene description file from the filesystem, and parses it in each
>slave, so the input file also needs to be available from the same place on
>all slave nodes.  pvmpov is not terribly informative if the slaves fail to
>read a scene file for whatever reason. The errors are actually found in the
>logs in /tmp on each slave.
>   It would be much better if the master node did the parsing, and then
>exported the parsed structures to all the slaves over PVM, but that would be
>a very large project.

That shouldn't be a very large project at all. Read the inputfile
(including all the included files, which is basically a simple  expansion),
broadcast it to all slaves, and work on that copy (either in-memory, or
have the slaves write is as (a) temporary inputfile(s) to minimize the
amount of code change). Takes less than 50 lines of codes, even counting
the file-inclusion. 


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