ERROR :Analysis was skipped due to inability to compute operating point.

频段较高，无源部分sonnet 电磁仿真，有源部分cadence spectre提参，然后整体仿真，现在做cadence和sonnet联合仿真，出现这个问题：

Error found by spectre during DC analysis, during info `dcOpInfo'.
ERROR (SPECTRE-16041): Analysis was skipped due to inability to compute operating point.
Analysis `dcOpInfo' was terminated prematurely due to an error.
modelParameter: writing model parameter values to rawfile.
element: writing instance parameter values to rawfile.
outputParameter: writing output parameter values to rawfile.
designParamVals: writing netlist parameters to rawfile.
primitives: writing primitives to rawfile.
subckts: writing subcircuits to rawfile.
Warning from spectre.
WARNING (SPECTRE-16707): Only tran supports psfxl format, result of other analyses will be in psfbin format.

******************
DC Analysis `dcOp'
******************
Error found by spectre during DC analysis `dcOp'.
ERROR (SPECTRE-16041): Analysis was skipped due to inability to compute operating point.
Analysis `dcOp' was terminated prematurely due to an error.
dcOpInfo: writing operating point information to rawfile.
Error found by spectre during DC analysis, during info `dcOpInfo'.
ERROR (SPECTRE-16041): Analysis was skipped due to inability to compute operating point.

还请不吝赐教！万分感谢！

问题解决了，mark一下，是因为我sonnet仿真的时候没有添加DC扫描，因此联合仿真时扫描DC会报错，无法收敛，找不到直流点；