Stats

  • Locked Locked
  • Replies 1
  • Subscribers 125
  • Views 13761
  • 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

spectre transient analysis displays only part of the total transient time

Ueue

Dear all,

Occasionally, after a long session of simulations it happens that the plot outputs only show part of the total transient time.

If you exit and restart cadence, the problem is solved for some time, until it happens again.

The spectre version we are using is 5.1.0.

Thanks a lot,
Stefano

  • Andrew Beckett

    Stefano,

    I believe this is usually a problem when using SST2 as the output format (which is the default). Try using:

    envSetVal("spectre.envOpts" "simOutputFormat" 'string  "psfbin")

    in the .cdsinit . You'll also want to be setting these UNIX environment variables before starting icfb:

    For Spectre or APS writing PSF data:
      setenv PSF_WRITE_CHUNK_MODE_ON true

    For UltraSim writing PSF data:
      setenv PSF_LARGE_FILE_ON false

    This is so that large files (>2G) are written by spectre from MMSIM releases such that they can be read by IC5141. The large file read support is only enabled in IC61X, so the env vars are to tell spectre/UltraSim to revert to the old-style "split" psf files.

    Regards,

    Andrew.

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.