Stats

  • Locked Locked
  • Replies 1
  • Subscribers 126
  • Views 14147
  • 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 there a way to prevent monte carlo runs from accumulating ever more RAM space (memory)?

vivkr

I've noticed that the peak memory usage as reported towards the end of the spectre simulation run keeps increasing after each iteration of my monte carlo simulations. So, if I have 100 runs going, and each run takes about 0.1 GB, then the Monte Carlo sim would theoretically end up requiring 10 GB of RAM at the end. Theoretically, as the simulation inevitably crashes as the job runs out of memory.

So far, the only way around is to launch multiple monte carlo sims in parallel, each running fewer iterations, and each on a different machine. At the end, the results have to be merged and post-processed by hand, or with some user-defined script.

I fail to understand why Spectre needs to store everything in the RAM till the end. Is there any option which can be used to disable this memory leak? I am running Monte Carlo sims with spectremdl.

Thanks,

Vivek

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.