Directed Random Stimulus
ConceptDirected random stimulus is a verification stimulus style used alongside constrained-random and fully directed scenarios. In processor verification, it steers random instruction streams toward hard-to-hit conditions—such as arithmetic rounding and overflow cases—by seeding or directing parts of the scenario with special values while still allowing randomized generation.
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Definition
Directed random stimulus is a stimulus-generation style that combines directed setup with randomized scenario generation. In the processor-verification example described by Chen, it is presented as a second scenario type alongside constrained-random scenarios and directed scenarios. Its purpose is to make hard-to-hit bug classes more likely than they would be under pure random stimulus alone. [1]
Use in processor verification
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