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Altera_Forum's avatar
Altera_Forum
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8 years ago

Simulation stops before simtime

Any ideas why a simulation would stop early? When I run the simulation, scopes show the full simtime. However, after about 2-15% of the simtime, simulation will stop. If I keep the simtime the same and simulate again, it will stop at the same number of cycles. If I reduce or increase the simtime, it will still stop at a different percentage. I have two models in my project. The other runs as expected.

simtime = 36000 stops at T=2962

simtime = 299600 stops at T=6062

I'm using start time of 0 and stop time of simtime. Solver is set to Fixed-step discrete.

Any input would be appreciated!

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    I have no idea, but I have a few additional questions.

    When it stops can you run again?

    Which simulator are you using?

    How do you run a simulation?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    When it stops can you run again?

    Yes. I get the chime sound same as when simulation completes normally.

    Which simulator are you using?

    Running inside Simulink. Only simulating the DSP system.

    How do you run a simulation?

    Ctrl-T to build and run

    Thanks!
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    Found the issue! There was a simulink stop block hidden deep down in a subsystem that was being triggered by a data check. This was triggering due to some bad data in my matlab workspace. I inherited that portion of the model from another engineer. Pretty obvious now that I found it!