blender-2.5x quick render “tip” (on multi-core cpu)
the default setting in the
menu render
under the section
performance
shows automatic detect of threads
and 8 tiles for x and y.
Everyone doing a render of the default simple cube-scene
can see the time for this render. And if one changes
the number of tiles to 2, there is a significant speedup
for simple scenes (and special if doing quick renders without
raytracing), because the overhead for packing the parts together
is more time-consuming than the calculation of the render.
Only if doing a full-size render with all features, there should be
used more tiles to speedup the render and only if one can use
multiple cpu-cores.
ps. i wrote this down, because i think it really saves a lot of time
and i change this nearly for every tests i do in blender.