Bug 13400 – Optimizing optimization of povray-3.50

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Klaus-J. Wolf 2003-01-06 20:52:51 UTC]

First of all, current povray version is 3.50c. One could do a version update.

Second, I have written a small script that does the lengthy work of
probabilistical optimization of Povray (3.50c tested, with gcc-3.2.1). In case
of an Athlon/600 I got a performance improvement of about 272% to the original
settings (ICC gave slightly worse results), in case of an P4/2000, I got less
improvement, but still better than ICC.

Maybe one could drop ICC compilation support since it's doesn't appear to be
quite useful anymore.

[Comment 1 Klaus-J. Wolf 2003-01-06 20:55:30 UTC]

Created attachment 7031 [details]
My original script to do a probabilistic profiling and a recompilation

The script uses all scene files of the original distribution (expected to be
unpacked in the current directory) to create probabilistic profiles. Then it
uses the profiles to recompile the source.

[Comment 2 Jon Portnoy (RETIRED) 2003-03-02 13:24:22 UTC]

I've committed the script as files/prob-opt.sh. I feel the optimizations are too heavy to integrate directly into the ebuild without risking numerous bug reports relating to lack of stability, but I also feel the script should be available to interested parties, so I decided that having it in the tree but not in the ebuild was a decent compromise.

I'm going to leave ICC support in the ebuild for now just for the sake of choice.

Thanks. :-)