Parallel Computing for QCD on a Pentium Cluster
  Motivated by the computational demands of our research and budgetary constraints which are common to many research institutions, we built a ``poor man's supercomputer'', a cluster of PC nodes which together can perform parallel calculations at a fraction of the price of a commercial supercomputer. We describe the construction, cost, and performance of our cluster. 
X. Q. Luo, E. B. Gregory, J. C. Yang, Y. L. Wang, D. Chang, and Y. Lin