I'm just reading up on this field, but I have a question. Can I build a Beowulf cluster with processors of different speeds? For instance, could I build a Beowulf cluster with a master node running 2.4 Ghz Pentium IV, and other nodes running 800 Mhz Pentium III's, Celerons, Pentium II's, etc.? If I understand this wikipedia article http://en.wikipedia.org/wiki/Symmetric_multiprocessing I believe I can. From what I gather Beowulf is not SMP, but rather ASMP, which implies I can cluster CPU's of different speeds together. any advice or useful links are appreciated as well as an answer to my initial question. thanks!