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post-processing the corner simulation outputs with Ocean

oyayla

Hi,

I have a question about post-processing an corner simulation in ADEXL. I want to plot, do some expressions in all corners. I think this is doable by iterating in results directory with foreach loop as below but am looking for a more elegant way to do this one with maybe built-in functions.

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/13928/ocean-xl-post-processing-corners

cornergroup = list( '(1 2 3 4) '(5 8 10) '(45 56 59) )

foreach(cornerlist cornergroup

foreach(corner cornerlist

sprintf(dir "/home/user/results/data/Interactive.1/%d/lib:block" corner)

wavef = v("some net" ?result 'tran ?resultsDir dir)

 plot(wavef ?strip x)

)

)

I am trying to open top level psf in this folder with openResults but am getting below Warning since it is not a real psf folder. Is there a way to get all runs better way than foreach above? Also I see some functions like "famValue()" to access individual run in parametric analysis(https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nVTpEAM). Can we use this function for corner simulation or do we have similar function to this for corner analysis?

"WARNING (OCN-6040): The specified directory does not exist, or the directory does not contain valid PSF results.
Ensure that the path to the directory is correct and the directory has a logFile and PSF result files."

Thanks,

Mustafa

My IC version is: ICADV12.3-64b.500.18. Also Tool 'cadenceMMSIM' Current project version '16.10.479

  • oyayla

    i have seen that one useful function to get a specific corner can be leafValue() as below. Still I don't know how to load all waveforms such that the below function works as if it works in calculator.

    leafValue(VT("/OUT") "modelFiles" "nom" "temperature" 27 "VDD" 1.8 )

  • Andrew Beckett
    in reply to oyayla

    What you'd do is use openResults() (or specify ?resultsDir in each access function - to be honest, it's simpler to use openResults() once and then that will set the default location for all functions from that point onwards) and specify /home/user/results/data/Interactive.1/psf/lib:block/psf as the path. This is the root of all the results for the test in question, and will access the entire family of data. Then you can use the value() function to slice out one sweep variable at a time, or leafValue to specify multiple sweep variables at the same time as you've shown above.

    That's easier than loading each individual result directory (you might just need to put an extra "/psf" on the end to avoid the warning, but I probably wouldn't just access the numbered dirs because it's harder to figure out the mapping between actual sweep points and the numbering sequence used).

    Regards,

    Andrew.

  • unSkilled
    in reply to Andrew Beckett

    I have a similar situation, but not in ADEXL as we don't have the license.

    We have a private tool that helps us to run corners/mc in a distributed way. The results are saved in a folder (e.g. root_folder), which contains subfolders with the name of the corner (e.g. corner1, corner2... cornerN) run. Inside this sub-folders lies the psf.

    I want to access and plot a signal located in each of the psf folders of the N-corners. There's no way of knowing beforehand how many folders will there be and their names. My idea is to try and create a list with the names of the folders inside root_folder and then use a foreach to go through the list. My question is: How to create such a list of N elements whose names correspond to the folder names created after the corners run? There's no need in accessing them in a random way so attaching elements at the beginning of the list using cont is not a problem.

    Thanks in advance.

  • Andrew Beckett
    in reply to unSkilled

    It's not that related to the original question in this thread, but never mind.

    It sounds as if you just want to use getDirFiles("/path/to/root_folder") to read the names in the root folder. You might need to filter them with (say) pcreMatchList to match those which follow a certain pattern.

    Regards,

    Andrew.

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