Unlike single-processor benchmarks, multiprocessor benchmarks can yield tens of numbers for each benchmark on each computer, as factors such as the number of processors and problem size are varied. A graphical display of performance surfaces therefore provides a satisfactory way of comparing results. The University of Southampton has developed the Graphical Benchmark Information Service (GBIS) on the World Wide Web (WWW) to display interactively graphs of user-selected benchmark results from the GENESIS and PARKBENCH benchmark suites.