Timing ECO - Cadence Encounter

[eeStud]

Hi,
I am running timing ECOs in Encounter (mainly upsizing cells using using ecoChangeCell).
Can you please tell me what commands should i run after upsizing some cells?
Should i run incremental placement? increamental routing? optimize the design again ?

Thanks!

 

[rca]

<load your design>
deleteFiller
deleteMetalFill
clearDrc

getEcoMode
setEcoMode -batchMode true -refinePlace false -updateTiming false
getEcoMode

<ecoAddRepeater>

refinePlace -preserveRouting true; # to keep existing routing and just reroute the modified nets.
setEcoMode -batchMode false -updateTiming false ; # this command long time, need to apply all ecoChangeCell

editDeleteViolations
globalDetailRoute

setFillerMode -corePrefix FILLCAP -core ...
addFiller

fillNotch ...
trimMetalFill...
saveDesign ...
....

 

[eeStud]

Thanks!
Some followUp questions:
Should i do only increamental routing?
I have seen setNanoRouteMode command has a flag -routeWithEco. should i set it true?
Also, should i use the command ecoDesign (which invokes ecoPlace & ecoRoute)?
Where you wrote <ecoAddReapeater> i assume this is the place to run also the ecoChangeCell commands?

Thanks!

 

[rca]

1- with this script is an incremental routing, with "refinePlace" you keep the existing routing.
2- not mandatory as you could see, in the script example, ecoRoute command also exist.
3- ecoDesign is when you provide the modified netlist, in the example, the cells modification are reduced and only to fix hold and SI/noise limitations, so around 100 cells upsizing/addition, the list is created by Primetime eco commands, to fix the timing in Primetime, our reference, and feed-backed to Encounter to place/route them.
4- "ecoAddReapeater" is where you add the upsize/add cell commands.

 

[eeStud]

Thank again!
I understand now.
One last thing, i am working with Encounter and Prime Time. But prime time "write_changes" command write them for Synopsis tools (using size_cell command for example).
Before i go and write my own parsnig script, any chance you have a "translation" script from Prime Time to Encounter?

Many Thanks!

 

[rca]

well.., of course we have some stuffs, but first I did not write the latest one, and I not allowed to provided that, sorry, but it is not a big deal.
sorry.

 

[eeStud]

No Problem,
Thanks for your help!