In its third run to knock the IBM supercomputer nicknamed "Roadrunner" off the top perch on the TOP500 list of supercomputers, the Cray XT5 supercomputer known as Jaguar finally claimed the top spot on the 34th edition of the list. The latest version of the TOP500 list, which is issued twice yearly, identified Jaguar, which is located at the Department of Energy's Oak Ridge Leadership Computing Facility and was upgraded earlier this year, posted a 1.75 petaflop/s performance speed running the Linpack benchmark. The supercomputer report also observes that just over 78% of the top 500 supercomputers run some type of Linux-391 of the top 500 supercomputers use the open source operating system.
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