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ADE-XL doesn't pick up readic initial condition file/ How to properly pass initial condition setup into ADEXL?

RFAnalog123

Hi all,

First of all, I am using Virtuoso 6.1.7-64b.

I need to run transient corner sims for an analog circuit, and the first ADEXL run resulted

in a lot of failures due to DCOp calculation failures. I then use the spectre.ic file in one of  

the successful runs to help the failure ones by enter its path in the "readic field inside the

transient options -> Algorithms.(Method A)

When I tried to run a few failure corners after this under ADE-L, SPECTRE finished

the sims successfully. However, when I load the ADE-L with the "readic" field set,  into

ADE-XL and run the corner sims again, the previously test case corners are still failed.

It looks like ADE-XL doesn't pick up the "readic" info.

In addition, I tried method (B) as follows:

I follow the info. in this previous thread to use an alternative way to include initial condition file:

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000ussjEAA&pageName=ArticleContent&sq=0050V000006VsoqQAC_201732620273064

(i) ADEXL does pick up spectre.ic file 
(ii) both standalone ADE-L and ADE-XL both 
read in the spectre.ic file, but they both failed with DC OP convergence issue

However, the same spectre.ic file when read in using method (A) above,
helps SPECTRE finished the sims properly without issues.


So the question now: how to make "readic" in method (A) above
works under ADEXL, or any workarounds?



Thanks,
Kevin. 

  • RFAnalog123

    I  edited the original post, please ignore this reply.

  • Andrew Beckett

    Kevin,

    Most likely the reason why method A failed for you was because you didn't give a full path to the file, and you're ending up with a new run directory for each run because a new history item is being created. You can just go to Options->Save and tell ADE XL to only save 1 history or tell it to Overwrite a specific history - in which case the run directory will be preserved and the spectre.ic file will remain. The spectre log file ought to tell you whether it failed to read the file - so you can inspect that.

    I'm not sure why the second method you used (from the article) didn't work - as far as the simulator is concerned, the data it sees is the same, so there must have been a difference in the initial condition file being read, or there was a mistake in your setup.

    Regards,

    Andrew.

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