verilog-xl simulation work fine, but ncsim hang up

[eefelix]

ncsim hang

Hi,

I've a netlist that when running the verilog-xl simulation, the whole simulation can be finished without problem, but when I put the same netlist into ncsim, the simulation will hang up at the middle of the whole simulation.

Does anyone come across the same problem ? Do you know the reason and how to solve it ? Thanks!