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

I tried to run all processes with valgrind. This causes the simulation to terminate with:

"Process terminating with default action of signal 41 (SIGRT9)"

and

"Trouble with Simulation Kernel."

Of course, this might be a side effect of valgrind.

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

I tried a testbench from another project with valgrind and it works fine. So it seems there is really something wrong with the simulator.