Simulation stops before simtime

[Altera_Forum]

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!

[Altera_Forum]

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]

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]

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!