. Lesson 1 : getting the most power of your multicore, SMP system or cluster with parallel Firefly. Lesson 2 : converging difficult SCF cases. Lesson 3 : two methods for preparing input files with basis sets and ECPs which are not currently built in. The excellent Firefly and PC GAMESS tutorial pages written by Dr. Kalju Kahn . Introduction to Firefly by Marek Checinski .