求助icc导入sdc后出现这些warning需要管么？可以详细解释一下吗？怎样解决呢？

javen_ye

Reading SDC version 2.0...
Warning: SDC version in file (1.7) does not match the version you requested
        from read_sdc (2.0).  Some constraints and options may not function. (SDC-2)
Warning: SDC version in file (1.7) does not match the version you requested
        from read_sdc (2.0).  Some constraints and options may not function. (SDC-2)
Using operating conditions 'typical' found in library 'csmc018_typ'.
Warning: Constraint 'set_wire_load_mode' is not supported by icc_shell. (SDC-3)
Warning: Creating virtual clock named 'vclk' with no sources. (UID-348)




Summary of unsupported constraints:
Information: Ignored 1 unsupported 'set_wire_load_mode' constraint. (SDC-4)
Info: hierarchy_separator was changed to /
1

lijiasen.xy

这不就是sdc文件的版本太低了吗，导致很多命令已经不适用了，综合的时候把版本升级到2.0