IT Managers: Anyone following the high performance computing industry has probably noticed the growing popularity of Linux cluster systems. The 23rd Top 500 list, a ranking of the world's most powerful supercomputers, reported that clusters make up more than 50 percent of the list. The appeal is easy to understand; Linux clusters are a fraction of the cost of traditional supercomputers while providing blazingly fast performance numbers. Many organizations from national labs to Hollywood special effects shops have reported performance increases that their previous systems couldn't touch. With such widespread appeal and tangible benefits, the migration to cluster systems seems inevitable for many organizations.

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