A method, apparatus, and computer program product for configuring a computer cluster. Job information identifying a data processing job to be performed is received by a processor unit. The data processing job to be performed comprises a plurality of stages. Cluster information identifying a candidate computer cluster is also received by the processor unit. The processor unit identifies stage performance models for modeled stages that are similar to the plurality of stages. The processor unit predicts predicted stage performance times for performing the plurality of stages on the candidate computer cluster using the stage performance models and combines the predicted stage performance times for the plurality of stages to determine a predicted job performance time. The predicted job performance time may be used to configure the computer cluster.