Need to run POVRAY on a single thread

[Srihari-mcw]

Hi. I tried to run povray on a single thread and for the same purpose I used the +WT1 option. I observed the following :

While the photon time was shown with 4 threads used for processing the trace time was shown with 1 thread. Searching a bit more, found that +WT option doesnt control the photon time related threads. I then tried to change the gather setting in GLOBAL_SETTINGS for photon with min_gather and max_gather set to 1 and tried to check maybe if this leads to only one thread getting used. But got similar results( i.e 4 threads were displayed along with photon time).

How can we run the povray application completely on a single thread? Kindly share your thoughts. Thanks