Search new design variables

Hi,

does anyone know if there is a way to make Cadence skip the step

"search for new design variables"

each time I run Spectre for an analog simulation.

This is useful when I am defining my simulation and ommited some
variables, but when I have no more need to add new variables, I would
gladly skip this step... if possible.

Best Regards,

 

There's a PCR for this:

PCR: 327275
Title: Artist treats temp as parameter instead of reserved word

In general though it does not do a "search for new design variables". What it
does do is add any design variables to the list if encountered during
netlisting. Please give an example of why you don't want it to do this. I know
of one case (other than the temp example (or "temper" in hspiceD)) that this
is required, but I'd like to make sure that if you have another reason then it
is covered in the PCRs.

Regards,

Andrew.

 

No, for precisely the reason that expressions tend to confuse the netlister
into thinking that the node references (and $time) are variables.
Since you can use a "resistor" as a bsource (as a resistor) the same thing
happens there...

One day this will all work perfectly ;-)

As for the UI consistency - it's not really a case of consistency - it's just
that the netlister needs to know that certain variables are reserved words
understood by the simulator, and so they are not design variables.

The other situation I had recently was where a customer wanted to have an
include file with parameter definitions, and then use these parameters on the
schematic without the netlister finding these and adding them to the design
variables list. The solution there was to do a netlist, then delete all the
variables auto-added, and then do a run (without netlisting). Not that
clean...

Andrew.