I have a very large simulation case which should run 12000 seconds (simulation time, not CPU time). But I find that ncsim will stop after about 9223s. It seems that ncsim(e.g. irun) has a maximum simulation time limit of 9223s. Does anybody know how to change this value? I have tried another simulation tool -- VCS (Synopsys), it does not has this limit.
There is a note about this on the Cadence web site.What causes and how to fix the "xmsim or ncsim: *E,TRTOVF: simulated time overflow" simulation error?
Basically, their suggestion is to increase the frequency of the system's clock. If you adjust the clock period from 10ns to 5ns, you can get twice as many simulation cycles thru. Of course, you need to adjust any delay values reported by the simulator for the difference in frequency.
Thanks. I'll try to adjust clock period. But this does not solve the problem fundamentally...