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Abstract A performance prediction method is presented, which accu - rately predicts the expected program execution time on massively par - allel systems We consider distributed - memory architectures with SMD nodes and a fast communication network The method is based on a relaxed task graph model, a queuing model, and a memory hierarchy model The relaxed task graph is a compact representation of commu - nicating processes of an application mapped onto the target machine Simultaneous accesses to the resources of a multi - processor node are modeled by a queuing network The execution time of the application is computed by an evaluation algorithm An example application imple - mented on a massively parallel computer demonstrates the high accuracy of our model Furthermore, two applications of our accurate prediction method are presented

Accurate performance prediction for massively parallel systems and its applications