Stats

  • Locked Locked
  • Replies 1
  • Subscribers 125
  • Views 14047
  • 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

Number of accepted tran steps in spectre log

anoopvk

When a transient analysis in spectre is done, in the log file there is a statement " Number of accepted tran steps" . And it shows a big number. However in the statements above, a very few number of tran points are shown. What is the significance of these points.?

In diagnostic mode, when +transteps is used, all these points are showing in the log file

.

Parents
  • Andrew Beckett

    This is controlled by the transient "annotate" option. It's set in ADE to be "status" which gives you a regular update on the progress of simulation and uses some heuristics to let you know when it's suddenly taking much smaller time steps.

    If you set annotate=steps, it will output a line for each of the 792 steps. Generally that's of little benefit though - you really don't need to see that info in the log file in general. 792 steps is not that many for any circuit that actually does something.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    This is controlled by the transient "annotate" option. It's set in ADE to be "status" which gives you a regular update on the progress of simulation and uses some heuristics to let you know when it's suddenly taking much smaller time steps.

    If you set annotate=steps, it will output a line for each of the 792 steps. Generally that's of little benefit though - you really don't need to see that info in the log file in general. 792 steps is not that many for any circuit that actually does something.

    Regards,

    Andrew.

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.