==Installation==
I did the entire assignment remotely on myth.stanford.edu. Everything went smoothly.

==Experimentation==
Setting the picture to 200x200 and the sample per pixel to 2, on myth it's pretty fast. Also I wrote a script
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!/bin/sh
pbrt lighting.pbrt
exrtotiff lighting.exr lighting.tif
gnome-open lighting.tif
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to make it even faster.