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stream out error when disabled "stream out from virtual memory"

Yanfei

Hi, I meet a problem when trying to stream out the layout.

If enabled the iption "stream out from virtual memory", there would be an error message saying "Pcell evaluation failed for xxx because the pcell SKILL code contains either a syntax error or an unsupported XStream function. Check the standard output or the Virtuoso log file for more information. Either correct the pcell SKILL code or ignore the error by enabling the 'ignorePcellEvalFail' option for XStream Out.".

But if I enabled "stream out from virtual memory", then there will be no such error message and the final gds can be generated. The gds is exactly what i drawed, no obvious error.

I am curious about the reason for this. What is the difference between enable and disbale the option? 

Thanks a lot !

Parents
  • Andrew Beckett

    The most likely explanation is that you have PCells which use functions which are illegal to use in PCells. This means that you're using a function which is only available in Virtuoso, and not in smaller executables like strmout or dbAccess.

    It then works when streaming out from VM (Virtual Memory) because it uses the data that's in Virtuoso memory rather than the usual flow which runs a standalone strmout process.

    It probably means you should get the PCell fixed though!

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    The most likely explanation is that you have PCells which use functions which are illegal to use in PCells. This means that you're using a function which is only available in Virtuoso, and not in smaller executables like strmout or dbAccess.

    It then works when streaming out from VM (Virtual Memory) because it uses the data that's in Virtuoso memory rather than the usual flow which runs a standalone strmout process.

    It probably means you should get the PCell fixed though!

    Regards,

    Andrew.

Children
  • Andrew Beckett
    in reply to Andrew Beckett

    It could also be that your PCell is dependent upon a user-defined function that was loaded via the .cdsinit and not through the library's libInit.il (which is the right way to do it). You should check the CIW and the log files to try to find more detail about the error which should help pinpoint the root cause.

    Regards,

    Andrew.

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