Research And Implementation On The Environment Of Parallel And Distributed Simulation Which Based On Open Source Simulator Icarus Verilog

With the development of technology, the large-scale integrated circuit manufacturing develop rapidly and a wide range of applications on the system design put forward a large number of new requirements. Digital system design has become more complex. Functional verification is a critical step to the design, which can effectively shorten the design cycle and reduce the cost of design. Traditional stand-alone verification method has been difficult to meet the requirement of Functional verification about the verification time and computing resources.Parallel and distributed simulation verification which partitioned a module into sub-modules on a number of nodes can meet the requirement of the large-scale and complex system for computing resources. And it can improve simulation speed to reduce the time spending on the verification. Parallel and distributed simulation verification has become the trend of verifying and has a good prospect for its advantages.This paper, first of all, introduced the implementation technology of parallel and distributed simulation. Then, we analyzed the open source simulator Icarus Verilog in detail, including the process of compile and simulation. Contrast the open source simulation and commercial simulation, including implementation principle, simulation mode performance. Base on above work, design and implementation the parallel and distributed simulation environment (ODPSim) which based on the open source simulator Icarus Verilog. Finally The evaluations about performances have been done by using a complexity system. The simulation results demonstrate that the ODPSim can accomplish a complexity system correctly and can obtain higher acceleration.