SKIP Circuit or instance in spectre

Hi Kotb,

The best way to do this if using ADE is to create a config using the hierarchy editor, and then you can use the Right Mouse -> Bind to Open over the instance in the tree, or over the cell table if you want all instances of that cell to be omitted.

It is also supported in spectre itself though - from ADE you'd have to go to the Simulation->Options->Analog, Misc tab, and then in the additional arguments field enter: skip=cut inst=[I7] (if I7 is the instance you wish to omit). Note that one downside of doing this in ADE is that it also scopes other parameters such as reltol, as outlined in article How to set different reltol settings for different instances or subcircuits when running with Spectre

So you might want to just add an option line:

myScopedOpts options skip=1 inst=[x0.x1]

in your netlist (you can include this in ADE via an included additional model file).

Currently ADE doesn't yet have a UI for entering these scoped parameters.

Regards,

Andrew.

Hi Andrew,

Can I omit elements of an array of instances using hierarchy editor? I have an array like subblock[0:511] and I only want to keep only subblock[0] in my netlist and simulation. I could not find a good way to do it using the config view and the hierarchy editor.

I can use the below Spectre options:

opt1 options skip=cut inst=[SUBBLOCK\<*\>]
opt2 options skip=none inst=[SUBBLOCK\<0\>]

However, this keeps the subblock[*] in the netlist and my netlist becomes too big and I run out of memory even when I try to create the netlist(in my case memory becomes more than 30G and Virtual memory as well) and I would like to remove them all together from the netlist.

Regards,

Ali

Hi Andrew,

Can I omit elements of an array of instances using hierarchy editor? I have an array like subblock[0:511] and I only want to keep only subblock[0] in my netlist and simulation. I could not find a good way to do it using the config view and the hierarchy editor.

I can use the below Spectre options:

opt1 options skip=cut inst=[SUBBLOCK\<*\>]
opt2 options skip=none inst=[SUBBLOCK\<0\>]

However, this keeps the subblock[*] in the netlist and my netlist becomes too big and I run out of memory even when I try to create the netlist(in my case memory becomes more than 30G and Virtual memory as well) and I would like to remove them all together from the netlist.

Regards,

Ali