cadence virtuoso available utilities

Sorry about all the emails advising new posts - I was trying to clean up the mess caused by the fact that this had been appended to a completely unrelated post (which the forum guidelines explicitly ask you to avoid, as it means readers of the posts who are searching for things in future get horribly confused).

There's no need to modify the run the netlist. It's in the UI in ADE from either the dc analysis or the tran analysis. You get to it via the Options button on the bottom of either form. For transient it's on the misc tab, on DC it's on the main options form. There's a checkbox for captab, and when you enable it, you get options to control the analysis statement directly and choose whether you get node, nodetonode, or nodetoground.

The solution is slightly incorrect - actually nodetonode also gives you the total node capacitance as well as the individual pairs of nodes. nodetoground only tells you the capacitance to ground. The solution doesn't tell you not to use it - and I don't think Shawn did either. You just have to know how to interpret the results.

Also, if you really didn't want to use the UI, there's no need to actually modify the netlist - put the captab info statement in an include file and reference it via a model file. Just create a file like you mentioned earlier, call it (say) "myanalyses.scs" and then use Setup->Model Libraries and then reference the file. But since you can do this from the UI easily enough, it doesn't seem worth it to me...

Regards,

Andrew.

Sorry about all the emails advising new posts - I was trying to clean up the mess caused by the fact that this had been appended to a completely unrelated post (which the forum guidelines explicitly ask you to avoid, as it means readers of the posts who are searching for things in future get horribly confused).

There's no need to modify the run the netlist. It's in the UI in ADE from either the dc analysis or the tran analysis. You get to it via the Options button on the bottom of either form. For transient it's on the misc tab, on DC it's on the main options form. There's a checkbox for captab, and when you enable it, you get options to control the analysis statement directly and choose whether you get node, nodetonode, or nodetoground.

The solution is slightly incorrect - actually nodetonode also gives you the total node capacitance as well as the individual pairs of nodes. nodetoground only tells you the capacitance to ground. The solution doesn't tell you not to use it - and I don't think Shawn did either. You just have to know how to interpret the results.

Also, if you really didn't want to use the UI, there's no need to actually modify the netlist - put the captab info statement in an include file and reference it via a model file. Just create a file like you mentioned earlier, call it (say) "myanalyses.scs" and then use Setup->Model Libraries and then reference the file. But since you can do this from the UI easily enough, it doesn't seem worth it to me...

Regards,

Andrew.