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Problem in running LVS in Assuran

behrooz

Hi all,

I'm using IBM design kit for Cmrf8sf (V1.4.0.7DM), Assura version 3.2-5141, and Cadence version ic5.141USR5. A couple of month ago, I drew the layout of a big circuit and ran DRC/LVS/RCX and after cleaning up every error, I submitted the layout to Mosis for fabrication. The chip has been fabricated and now I'm measuring it. I'm skeptic regarding one part of the chip, so that's why I tried to repeat the whole process(DRC/LVS/RCX), again. As, the former server is not functioning any more, i copied whole the library (schematic/layout), to a new server, with the same bashrc, cds.lib, and other configurations. The problem is that, DRC works fine, and gives to error, but LVS doesn't complete completely, and returns back with the below errors:

 "Error:  There are two or more descriptions of the device with identical type ('Generic'), and name ('nfet_rf'), however number of terminals are not the same, details are given below.

'nfettw_rf aulvs cmrf8sf' pin names : [D G S B PI sx]  dfII terminal names: [D G S B PI sx]

'nfet_rf aulvs cmrf8sf' pin names: [D G S B]  dfII terminal names: [D G S B]

1 error(s) encountered, vldb not generated

Error- dfIITovldb  failed to execute

 

and then after some warnings:

*Warning* An error occured during Nvn PreExtraction. 

aveng terminated abnormally"

As I told, layout had already passed LVS, with no error, and I've not changed anything. Now even LVS doesn't run completely. If anybody has an idea, I'd be grateful if let me know about it.

 

Thanks

Parents

  • First of all, forget about and delete V14xx.  That is years old.  The cardinal rule with IBM design kits is to use the most current version.  The model file methodology changes from time to time (PDK to PDK).  You need to review the Spectre release notes located in the Spectre/doc directory in the PDK to determine the supported version, then find the Spectre setup information in the model reference guide located in the /doc directory to determine what files are needed.  Regards, Zach.

Reply

  • First of all, forget about and delete V14xx.  That is years old.  The cardinal rule with IBM design kits is to use the most current version.  The model file methodology changes from time to time (PDK to PDK).  You need to review the Spectre release notes located in the Spectre/doc directory in the PDK to determine the supported version, then find the Spectre setup information in the model reference guide located in the /doc directory to determine what files are needed.  Regards, Zach.

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