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sim error when running sp simulation

TommasoF

Hi all,

I have hard times troubleshooting the following error:

I just desire to run a sp simulation and therefore I defined some ports for then assessing the SP results.

from the error it looks like I specified 5 ports (in reality are 6) but the port count 1 is the max allowed(?). I actually do not really understand that.


the schematic looks like this, where I define 6 ports from 1 to 6

any idea on why I get this error  and what does it mean ?
thanks 

Parents

  • If you don't specify the ports in the sp analysis, it will use all ports in the circuit, using the port number on each port to indicate which was used.

    However, there was a bug where when using APS then if the order of the ports in the netlist are in the wrong order (i.e. they are not in numerical order), then this can fail with the error you've seen (I reproduced it).

    This was fixed in SPECTRE 20.1.0.404.isr13 and 21.1.0.246.isr4.

    If you run with Spectre X rather than APS, or even with Spectre classic (may not be the best solution for a large circuit), then it will run correctly. Also, if you specify the ports you want to analyse in order, then it should work with APS in the version you have.

    Andrew

Reply

  • If you don't specify the ports in the sp analysis, it will use all ports in the circuit, using the port number on each port to indicate which was used.

    However, there was a bug where when using APS then if the order of the ports in the netlist are in the wrong order (i.e. they are not in numerical order), then this can fail with the error you've seen (I reproduced it).

    This was fixed in SPECTRE 20.1.0.404.isr13 and 21.1.0.246.isr4.

    If you run with Spectre X rather than APS, or even with Spectre classic (may not be the best solution for a large circuit), then it will run correctly. Also, if you specify the ports you want to analyse in order, then it should work with APS in the version you have.

    Andrew

Children
  • in reply to Andrew Beckett

    yes indeed I wanted to avoid to specify the ports in the sp analysis. I will try the other ways you proposed, thank you very much!

  • in reply to Andrew Beckett

    Hi Andrew, 
    was this resolved in Spectre releases newer than 21.1? or just in these two releases mentioned by you?

    I am now using IC618_ISR31 with Spectre 211_ISR8 and I do see the error appearing again even though with a different flavour (I do use APS).
    With the SP-simulation defined as here below

    I get the following error in the output log:

    after I define the ports (see here below), then the SP-sim works fine:

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