Print Noise summary and corresponding OCEAN noiseSummary

Michele,

There's an argument ?hierLevel that does this...

Andrew

d' oh... Was looking in an outdated reference file (5.1.41) :-/

Shame on me!

Thanks Andrew,

Michele

Hi,

I am attaching another question here as it relates to the same topic, it is actually a sort of "evolution" - Please let me know if this is sub-optimal for you, I can create a new topic.

I am not able to make use of the ?hierLevel parameter

Within an OCEAN session, I am able to type the following and get the results (it is from a PSS/Jitter simulation)

ocean>noiseSummary('spot ?result 'pnoise-sample_pm0 ?resultsDir  "../psf" ?frequency 1K ?noiseUnit "V" ?truncateData 10 ?truncateType 'top ?paramValues '(4.41701e-06))

... (output)

however, if I now try to introduce the hierLevel parameter:

ocean>noiseSummary('spot ?result 'pnoise-sample_pm0 ?resultsDir  "../psf" ?frequency 1K ?noiseUnit "V" ?truncateData 10 ?truncateType 'top ?paramValues '(4.41701e-06) ?hierLevel 1)

I get the following reply:

*Error* famGetAnaValue: no applicable method for the classes - (famLeafAnalysis flonum)

Now, I really do not know what to try. The reference manual (IC6.1.8, Octrober 2018) reports:

so the parameter should be a symbol, however I am not very sure what symbol should it be?

For the "sister"  function ocnGenNoiseSummary, a similar parameter is declared as integer, which I can better understand...

Any hints on what I could be doing wrong here?

Thanks,

Michele

Dear AncisMichele,

AncisMichele said:

I get the following reply:

*Error* famGetAnaValue: no applicable method for the classes - (famLeafAnalysis flonum)

Now, I really do not know what to try. The reference manual (IC6.1.8, Octrober 2018) reports:

Did you happen to search the Cadence On-line support site for this error? There is an article directly aimed at the source and resolution of this error in the Cadence On-line support article at URL:

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1O3w000009xw9sEAA&pageName=ArticleContent

I hope this addresses your question AncisMichele!

Shawn

Hi Shawn

thanks for your help. I don't currently have access to the On-line support, so I could not search for it, nor can I access your link.

I'm working on it

Michele

Hi Michele,

Essentially it says that it was broken in IC6.1.8/ICADVM18.1 ISR6 and is fixed in ISR10. 

I've sent some feedback to the tech pubs team to fix the s_hierlevel typo (it should be x_hierlevel).

Andrew

Thanks Andrew,

so I'll see what I can do on my side with the versions. Much appreciated.

(that s_* typo puzzled me intensely!)

Regards,

Michele

Hi again,

sorry to bother but... Is there by any chance the possiblity that the function ocnGenNoiseSummary() has issues in previous ISRs?

I am witnessing something very weird when trying to generate a noise summary database throught that.

Namely, I do (I am in the right directory, so to speak):

ocean> openResults("./psf")

"./psf"

ocean> results()

(dcOp dcOpInfo [..] pnoise_sample_pm0 [..])

ocean>ocnNoiseSummary(1 ?result 'pnoise_sample_pm0)

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 results files.

ocean> results()

You must openResults() on a valid psf directory before using this command...

ocean> openResults("./psf")

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 results files.

I went to the shell to check, just out of despair, and the logFile together with the psf results are there... But there's a psf.noisesummary now.

At any rate, I cannot open the PSF files with the results browser... So I guess I can as well erase the data and repeat the simulation.

Can you advise if you see something wrong on my side, or is it just the function not properly working?

BTW, maybe have a look at the reference for that entry too: its signature does not mention the keywords like ?result and the like:

Thanks,

Michele

Hi Michele,

I did some quick tests in the latest ISR, and from what I can see in IC6.1.8 this function doesn't seem to work with sampled noise results; I get the database created, but it's empty. I don't get the warning you do, but it may be related to the additional variables in the database caused by having an event time involved too.

The documentation should certainly say ?result and ?resultsDir  - the first argument is positional though. I'll feed that part back.

For the first issue though, I suggest you contact customer support (just in case there was something stupid about my quick test, and also it would be better tied to a real customer).

Regards,

Andrew

Thanks Andrew - I'll see what my Customer feels about opening a case for this.

Since when I started exploring this functionality I was actually looking at the wrong (outdated) OCEAN help, I worked out a "flow" with the

underlying spectre noisesummary command as reported here:

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/36842/noise-contribution-of-an-instance

That will do for now

Regards,

Michele