counter overflow at time <x> on Tire kick first test

[Peter Lee (wonjongbot)]

Hi all,

This is a very exciting open source project, and I hope to contribute here some day soon!

Setup:

I am currently following the instruction on `black-parrot-sim` repository. My environment has been set up using the provided docker file, and I’m running the initial test with the following command after running `make prep_lite`:

`make -C black-parrot/bp_top/syn build.verilator sim.verilator`

Issue:

While the simulation appears to start correctly, I’m getting repeated messages like:

`TOP.testbench.wrapper.processor.u.unicore.unicore_lite.core_minimal.be.watchdog.stall_counter error: counter overflow at time           2854657000`

The same error persists and continues to accumulate, with the simulation not terminating. At first, I assumed the simulation is taking a bit long since it's a large design, but I wanted to confirm whether this is expected behavior or if there might be an issue with my setup. 

I've attached the log file of the ongoing simulation. I would appreciate any guidance on whether this is supposed to happen (which I doubt :( ) or if there are any steps I should take to solve it. Thank you so much for your time!

Best,

Peter

[Dan Petrisko]

Hi, welcome! 

Can you provide your:

- os / version

- verilator version

- black-parrot commit hash

- black-parrot-sdk commit hash

I don't see this in a fresh clone so it may be an environment issue or some step is subtly failing

Best,

-Dan  

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[Peter Lee (wonjongbot)]

Hi dan,

Sure!

os: Ubuntu 22.04.5 LTS (using provided docker environment)

verilator: 5.029 on host ( 5.030 on black-parrot-tools )

black-parrot commit hash: d28efc7

black-parrot-sdk commit hash: f71d11d

Do I need to keep black-parrot and black-parrot-sdk up to date with master? Thanks!

Best,

Peter

[Dan Petrisko]

Hi Peter,

The intention is that the versions tagged in black-parrot-sim all work together. Of course, sometimes things skip through the cracks. It’s definitely worth a shot to bump to main/master

Best,

Dan

On Mar 3, 2025, at 12:56 AM, Peter Lee (wonjongbot) <wonjo...@gmail.com> wrote:



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[Peter Lee (wonjongbot)]

Hi Dan!  

Looks like that did the trick! The sim ran successfully. Thank you so much!  

Quick side note: I had to add the following to my Dockerfile to make sure g++-10 was used for compilation. This ended up fixing another issue where Verilator couldn’t find the coroutine library, which comes with c++20 standard). Just wanted to mention it here in case anyone else runs into something similar (though I did see it referenced in a GitHub issue already).

```
RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 && \
    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 100

```

Looking forward to exploring this project more.

Best, 

Peter