Doug Eadline has posted a list of some of the useful books on his bookshelf related to cluster computing
Every so often I am asked about books on Beowulf/HPC clustering. The good news is there are books available at several levels. The bad news is no one book covers everything because the number of topic areas is so vast. To make your search easier, I have surveyed all of the cluster books I know about. I have not included some that are out of print or don’t really discuss HPC. Some of the books are dated, but still contain good general information. Others are just plain old, but are included here for completeness. If you know of any other books, please add a comment.
Some great titles on the list.