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Issue with hold time when migrating from Encounter to Innovus

Hello,

I am trying to migrate my digital synthesis flow from Encounter (v12.00-p002_1) to Innovus (v19.14-s105_1) by updating the script that used to work with Encounter. After replacing the commands that become obsolete in Innovus (mainly updating CTS to the ccopt flow), I was able to let the flow run except for a hold time issue. Every time I use "optDesign -hold" to try to fix hold time issue, I get the following:

-> "1 net: Could not be fixed as the net is considered as IPO ignored by the process".

This causes a lot of hold violation to be ignored. This happens no matter at which stage I invoke the "optDesign -hold" command, and I am testing this on a simple scan chain design. I did not face this issue before with Encounter.

I would appreciate any help on solving this issue, please.

Many thanks in advance!

Cadence tool versions:

- Virtuoso: sub-version IC6.1.8-64b.500.11

- Encounter/Timing: v12.00-p002_1

- Innovus: v19.14-s105_1

Kindest Regards,

Nader Fathy

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MJ Cad over 5 years ago

Hi Nader,

Greetings!

I am not quite sure if you are aware of the Cadence support portal i.e. https://support.cadence.com.

You get plenty and a variety of knowledge pieces there to learn the tool and solve your design problems.

There is an excellent article on Recommendations for fixing hold violations in EDI System / Innovus

Direct Link: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nUtZEAU&pageName=ArticleContent

If you don't have an account? Register Now

Hope this helps.

Regards

-Mukesh
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Nader Fathy over 5 years ago in reply to MJ Cad

Thank you so much Mukesh! This article is indeed useful, I will review it carefully.

Yes I am aware of Cadence Support, but some accounts like mine don't have the privilege of filing a case through the portal. It's a much shorter process to ask through the forums.

Thanks again

Kindest Regards,

Nader Sh.
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MJ Cad over 5 years ago in reply to Nader Fathy

Hi Nader,

I am glad you found the document useful.

You know the ability to file cases has no restrictions on what you could see on the support portal.

You can always register using your Innovus license host ID, and see all the knowledge contained on the support portal.

Regards

-Mukesh
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Reply

MJ Cad over 5 years ago in reply to Nader Fathy

Hi Nader,

I am glad you found the document useful.

You know the ability to file cases has no restrictions on what you could see on the support portal.

You can always register using your Innovus license host ID, and see all the knowledge contained on the support portal.

Regards

-Mukesh
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Vote Up 0 Vote Down

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