InstrumentedprogramMeasurements&DirectsimulationresultsParallelProgramPre_processorWorkstationSimulatorProgramStructurerecordPerformenceMetricsControl flowData flowPerformenceEvaluationresultsM1T1T2T2M2T1T1T2M3. . . . . .MmT3T3T4T3T4T4T5T5T5T6T6T6Waiting timeRun timemessage-passingUnpackaging timePackaging time