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 Exporting .gds file from cadence 

Last post Thu, Jul 28 2011 2:40 PM by Andrew Beckett. 6 replies.
Started by nadroit 28 Jul 2011 10:48 AM. Topic has 6 replies and 6027 views
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  • Thu, Jul 28 2011 10:48 AM

    • nadroit
    • Not Ranked
    • Joined on Tue, Jul 12 2011
    • Posts 7
    • Points 140
    Exporting .gds file from cadence Reply

    Hi All

    I want to export .gds file from cadence 6.1 and import it to HFSS 10 and do some simulations. Just to make sure my gds file is ok I did import it back to cadence and I do see the same layout. But when I import the same gds file in HFSS 10,I dont see anything. I am not sure what is the problem. When I look at my gds file its not readable. I think I am not exporting gds file correctly. If somebody has a tutorial on how to export .gds file from cadence 6.1 thats would be helpful. Please help

    Thanks

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    • Post Points: 35
  • Thu, Jul 28 2011 10:53 AM

    Re: Exporting .gds file from cadence Reply

    Did you try reading the manual? There's a whole manual in the help (use the Help menu in the tools) on Design Data Translators which explains how the stream interface works and how to set it up.

    Andrew.

    • Post Points: 20
  • Thu, Jul 28 2011 1:02 PM

    • nadroit
    • Not Ranked
    • Joined on Tue, Jul 12 2011
    • Posts 7
    • Points 140
    Re: Exporting .gds file from cadence Reply

    I am reading the manual. Can you please tell me how do the gds file look? is it a binary file,text file?

    Thanks

    • Post Points: 20
  • Thu, Jul 28 2011 1:05 PM

    Re: Exporting .gds file from cadence Reply

    It's binary. The detailed description of the format is in an appendix of the manual.

    Andrew

    • Post Points: 20
  • Thu, Jul 28 2011 1:40 PM

    • nadroit
    • Not Ranked
    • Joined on Tue, Jul 12 2011
    • Posts 7
    • Points 140
    Re: Exporting .gds file from cadence Reply

    I did follow the steps listed in the manual. I could generate the gds file without any errors but when I open that file it looks very weired .

    This is how my log file file looks like

    *******************************************************************************
    Product   : Virtuoso(R) XStream Out
    Program   : @(#)$CDS: strmoutui version 6.1.3 09/08/2008 02:54 (cic612lnx) $
              : sub-version IC6.1.3.1
    Started at: 28-Jul-2011  15:24:54
    User Name : root
    Host Name : serv1.uta.edu
    Directory : /root/tsmc65nm
    CADENCE Design Systems, Inc.
    ********************************************************************************

    Info: Cellview Rev Num:99,  Tech Rev Num:59

    INFO (162): You have not used the viaMap option. If the OpenAccess design has native oaVia instances, use the -viaMap option for preserving oaVia instances in a Stream Out - Stream In round trip. Using the -viaMap option improves performance and VM usage of applications using the Streamed-In design.  For details on the viaMap option, refer to the "Design Data Translator's Reference" guide for XStream.

    Summary of Options :

    library    oscillator
    strmFile   /root/tsmc65nm/oscillator/T3.gds
    strmVersion    6
    topCell    gds_try
    view    layout
    logFile    strmOut.log
    techLib    tsmcN65
    hierDepth   1
    refLibList   .cadence/dfII/xstream/out/_strmOut.refLibs
    case    Preserve
    convertDot   node
    respectGDSIINameLimit  
    flattenPcells  
    flattenVias  
    strmTextNS   "spice"
    noOutputTextDisplays  

    1. Translating oscillator/gds_try/layout as gds_try

    Summary of Objects Translated:

     Scalar Instances:  0
     Array Instances:  0
     Polygons:   0
     Paths:    1
     Rectangles:   59
     Lines:    0
     Arcs:    0
     Donuts:    0
     Dots:    0
     Ellipses:   0
     Boundaries:   0
     Area Blockages:   0
     Layer Blockages:  0
     Area Halos:   0
     Markers:   0
     Rows:    0
     Standard Vias:   0
     Custom Vias:   0
     Pathsegs:   0
     Text:    6
     Cells:    1

    Elapsed Time = 0.1s

    ****************************************************************

    But my gds file when I open it in word pad is not a binary file . 

    I am not sure what I am missing

    Thanks

    • Post Points: 5
  • Thu, Jul 28 2011 1:47 PM

    • Tawna
    • Top 25 Contributor
    • Joined on Thu, Jul 10 2008
    • Snohomish, WA
    • Posts 212
    • Points 5,625
    RE: Exporting .gds file from cadence Reply

    Hi Nadroit,
     
    You may want to think about filing a service request at this point.
     
    best regards,
     
    Tawna

    Best regards, Tawna Wilsey Staff Support AE, Global Customer Support Cadence Design Systems, Inc.
    • Post Points: 20
  • Thu, Jul 28 2011 2:40 PM

    Re: Exporting .gds file from cadence Reply

    Then we'd be able to take a look at the stream file and check it. You could also attach it to a post in the forum - it sounds as if it is small and doesn't contain anything too sensitive - just a small number of shapes.

    But a service request would probably be best.

    Regards,

    Andrew

    • Post Points: 5
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Started by nadroit at 28 Jul 2011 10:48 AM. Topic has 6 replies.