Stats

  • Locked Locked
  • Replies 1
  • Subscribers 92
  • Views 13598
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Is post CTS optdesign command optimizes clock path.

vamsi611

optdesign -postcts .

Is the above command optimizes clok path.I am not using useful skew in setoptmode.

According to my understanding it only optimizes datapath not clockpath.

If we set setoptmode usefulskew true, then only  optdesign optimize clock path.

Can anyone clarify this or correct me.

Parents

  • optDesign -preCTS -postCTS & -postRoute normally will not touch a correctly defined clock.
    clockDesign is the only command that should be able to modify a clock net.

    After importing a design , always always start  with  ...................

    timeDesign -prePlace
    check_timing -verbose 
    report_clocks

    If those reports are not clean, you are going nowhere fast.
    I'll bet your clock was not initially correctly constrained before placeDesign , use "create_clock"

    Shawn

Reply

  • optDesign -preCTS -postCTS & -postRoute normally will not touch a correctly defined clock.
    clockDesign is the only command that should be able to modify a clock net.

    After importing a design , always always start  with  ...................

    timeDesign -prePlace
    check_timing -verbose 
    report_clocks

    If those reports are not clean, you are going nowhere fast.
    I'll bet your clock was not initially correctly constrained before placeDesign , use "create_clock"

    Shawn

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.