Optimization of Regressions in L2 Cache Verification

In a repetitive and progressive development of configurable IP core environment, Regression testing in design verification plays a vital role. As size of the design continues to grow accordingly increases the complexity of verification and regression time. However, it is a very well known fact that maintaining regression quality and reducing regression time is very difficult. In this paper, a novel technique is proposed for configurable L2 cache of IP cores, in which moving all plusargs from command line of simulation launching regression scripts into the testbench as an option groups and then randomizing the option groups during simulation for each test case. From the proposed regression optimization technique overall 42.33% machine cycles, 42.01% of CPU time is saved with coverage more or less similar as traditional one for multiple rounds of runs.