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c-thaler's avatar
c-thaler
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

Questa simulation hangs (nondeterministic)

I run a Questa simulation for an IP core from the command line on a Linux server. Usually, the simulation finishs successfully. But every now and then the simulation hangs. When it hangs, I can see ...
Simulation
TingJiangT_Intel's avatar
TingJiangT_Intel
Icon for Contributor rankContributor
2 years ago

As it worked fine after you changed the project, the error may related to the project and testbench. It may be that your project got stuck during simulation, causing excessive CPU resource usage.

You may check your testbench to see if there are any operations that cause an infinite loop.


c-thaler's avatar
c-thaler
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

I was able to reproduce with the other project, too. It took a few thousand simulation runs over the weekend. But finally it got stuck with 100% CPU load.