solaris工作站中verilog仿真出错

在terminal里调用ncverilog对我的代码进行编译仿真，但好几次被中断
提示信息：
X Error of failed request: Badlength(poly request too large or internal Xlib Length error)
Major opcode of failed request:6(X_ChangeSaveSet)
Serial number of failed request:1108670
Current Serial number in output stream:1148386

想知道是因为我的verilog代码引起的，还是我仿真设置引起异常中断？
或者系统随机性的出错！