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Computer architects must determine how tomost effectively use finite computational resources whenrunning simulations to evaluate new architectural ideas.To facilitate efficient simulations with a range of benchmarkprograms, rn have developed the MinneSPEC inputset for the SPEC CPU 2000 benchmark suite. Thisnew workload allows computer architects to obtain simulationresults in a reasonable time using existing sirnulators.While the MinneSPEC workload is derived from thestandard SPEC CPU 2000 warklcad, it is a valid benchmarksuite in and of itself for simulation-based research.MinneSPEC also may be used to run Iarge numbers ofsimulations to find "sweet spots" in the evaluation parameterspace. This small number of promising designpoints subsequently may be investigated in more detailwith the full SPEC reference workload. In the processof developing the MinneSPEC datasets, we quantify itsdifferences in terms of function-level execution patterns,instruction mixes, and memory behaviors compared tothe SPEC programs when executed with the reference inputs.We find that for some programs, the MinneSPECprofiles match the SPEC reference dataset program behaviorvery closely. For other programs, however, theMinneSPEC inputs produce significantly different programbehavior. The MinneSPEC workload has been recognizedby SPEC and is distributed with Version 1.2 andhigher of the SPEC CPU 2000 benchmark suite.