Model files defined in .cdsenv for spectre are not loading

When you say you are getting "undefined model files" - do you mean you are getting something else showing up and not the model files you've asked for? It's possible that there's a PDK you're using which is setting this environment setting in a libInit.il and that's then being set when that library is first accessed. If you don't mean that, please clarify what you do mean.

Andrew

Hello Andrew,

Thank you so much for your prompt response. Yes. That is correct. "Undefined model files" that I haven't asked for are showing up. How do I unset this from loading up model libraries which I haven't asked for? I couldn't find libInit.il. 

Thank you very much indeed. 

Did you look for a libInit.il inside the directory for each library (most likely is that this is defined in a library from the PDK)? That's the most likely place.

If it's not there, it's either going to be in an existing .cdsinit or .cdsenv somewhere else - or of course, if you're opening an existing ADE L state, ADE XL view, or maestro view, it's then defined within the test for that view already - changing the environment variable will not affect existing setups (because we can't distinguish between you having consciously set it or having been happy with the previous defaults, and overriding it would cause existing setups to break). So the cdsenv/cdsinit approach will only affect new tests or new ADE L setups.

Regards,

Andrew.

Hello Andrew,

After submitting the response I found your reply from five years ago located here.

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/33217/how-to-add-a-list-of-model-files-into-ade-form-through-command-line

I have a similar problem. This was your response.

Maybe you're using a PDK that is already trying to set the model files and that is happening after you are setting it in the .cdsinit. This could be done either by it doing the envSetVal(), or I've also seen PDKs using the asiSetEnvOptionVal approach, but passing asiGetTool('spectre) as the first argument rather than asiGetCurrentSession().

So do your customization, open the schematic, and then before starting ADE, check the output of:

envGetVal("spectre.envOpts" "modelFiles")

and

asiGetEnvOptionVal(asiGetTool('spectre) "modelFiles")

After opening the schematic and before opening ADEXL, I typed in CIW

envGetVal("spectre.envOpts" "modelFiles")

asiGetEnvOptionVal(asiGetTool('spectre) "modelFiles")

I see the model files that the PDK defined which I haven't defined showing up. I am confused on how to force my new models defined through .cdsint or .cdsenv to take effect for new designs. In other words, I can I override the PDK, because it is using older models that I haven't defined?

I am not understanding why the cdsenv/cdsinit approach of adding model files will not work for new designs?

Thank you so much for your help and have a wonderful weekend. 

Hello Andrew,

After submitting the response I found your reply from five years ago located here.

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/33217/how-to-add-a-list-of-model-files-into-ade-form-through-command-line

I have a similar problem. This was your response.

Maybe you're using a PDK that is already trying to set the model files and that is happening after you are setting it in the .cdsinit. This could be done either by it doing the envSetVal(), or I've also seen PDKs using the asiSetEnvOptionVal approach, but passing asiGetTool('spectre) as the first argument rather than asiGetCurrentSession().

So do your customization, open the schematic, and then before starting ADE, check the output of:

envGetVal("spectre.envOpts" "modelFiles")

and

asiGetEnvOptionVal(asiGetTool('spectre) "modelFiles")

After opening the schematic and before opening ADEXL, I typed in CIW

envGetVal("spectre.envOpts" "modelFiles")

asiGetEnvOptionVal(asiGetTool('spectre) "modelFiles")

I see the model files that the PDK defined which I haven't defined showing up. I am confused on how to force my new models defined through .cdsint or .cdsenv to take effect for new designs. In other words, I can I override the PDK, because it is using older models that I haven't defined?

I am not understanding why the cdsenv/cdsinit approach of adding model files will not work for new designs?

Thank you so much for your help and have a wonderful weekend. 

Hello Andrew,

I got it. Thank you so much indeed.