ubuntu系统用vcs仿真测试程序时出错

[huaiwangyu]

显示：
Warning-[STASKW_CO1] Cannot open file
The file 'data.pat' could not be opened. No such file or directory.
Please ensure that the file exists with proper permissions.

Warning-[STASKW_RMCOF] Cannot open file
../logical/tb/tb.v, 137
Cannot open file 'data.pat' passed as argument to $readmem.
Please verify that the first argument to $readmem is a file that exists with
proper permissions.
请问各位大佬，有什么方法解决么