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Cadence Spectre cannot read library model files

Xinbest

Hello everyone,

Recently I am using Cadence Spectre(Version 16.1.0.387.isr6 32bit) to simulate a netlist in command line. However, I met the error when reading the library model file:
Reading file: /home/grads/z/zhanxin/PowerDeliveryNetwork/IBM_90nm_models/IBM_PDK/cmos9sf/V2.2.0.1IBM/Spectre/models/design.scs

Fatal error found by spectre during circuit read-in.
FATAL (SFE-867): Unable to open the file `/home/grads/z/zhanxin/PowerDeliveryNetwork/IBM_90nm_models/IBM_PDK/cmos9sf/V2.2.0.1IBM/Spectre/models/design.scs'.

That circuit library file (design.scs) could be accessed via vim, so this excludes the possibility of path error. Also, I have tested it on an old server with Spectre version 15.1.0.602.isr11-32bit  installed and the simulation performs normally. Is there anyone having experiences about how to solve it with the new version Spectre?

Thanks a lot!
Xin

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  • Andrew Beckett

    Hi Xin,

    One possibility might be that your file server is using a file system with 64-bit inodes (such as XFS). You didn't mention what OS your server is running on. These newer file servers represent the "inode" which is a number to represent the file being read as a 64-bit number, and so normally 32-bit applications will not work.

    You probably need to ensure that all your applications (including spectre) are running in 64-bit mode. With spectre you can add -64 on the command line, choose "64bit" on the Setup->Environment form, or simply use:

    setenv CDS_AUTO_64BIT ALL

    (if using csh) or:

    export CDS_AUTO_BIT=ALL

    (if using bash/ksh) before starting Virtuoso.

    Hopefully that would fix it.

    Andrew.

Reply
  • Andrew Beckett

    Hi Xin,

    One possibility might be that your file server is using a file system with 64-bit inodes (such as XFS). You didn't mention what OS your server is running on. These newer file servers represent the "inode" which is a number to represent the file being read as a 64-bit number, and so normally 32-bit applications will not work.

    You probably need to ensure that all your applications (including spectre) are running in 64-bit mode. With spectre you can add -64 on the command line, choose "64bit" on the Setup->Environment form, or simply use:

    setenv CDS_AUTO_64BIT ALL

    (if using csh) or:

    export CDS_AUTO_BIT=ALL

    (if using bash/ksh) before starting Virtuoso.

    Hopefully that would fix it.

    Andrew.

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