It's sad, but this excites me:
Today I got access to a dual processor Radiance machine, and finally got to try out a newish feature of rpict, the -N switch. Using this option, rpict will send multiple renderings to multiple CPUs if your machine has them. If I had four CPUs, rpict could render four images in parallel. In the image above, you can see that two rpict processes are getting 99% of a CPUs resources. Trust me, this is cool.