debug_test hangs under dsim

[MikeOpenHWGroup]

Running the debug_test on the cv32e40x/dev branch hangs when simulating with Metrics DSIM. As far as I am aware, this behaviour does not occur on any other branch of any other core and does not occur with Cadence Xcelium.

At this time, I do not suspect an RTL issue.

Steps to Reproduce

$ git clone -b cv32e40x/dev https://github.com/openhwgroup/core-v-verif.git
$ cd core-v-verif/cv32e40x/sim/uvmt
$ make test TEST=debug_test USER_RUN_FLAGS=+rand_stall_obi_disable SIMULATOR=dsim

[MikeOpenHWGroup]

Note that I have merged in a hot patch to cv32e40x/dev (c09848f) to temporarily removed the debug_test from the Metric CI regression as the hanging test causes a false negative result and excessively long CI regressions. The debug_test will be restored once this issue is resolved.

[silabs-robin]

Hi. Are there any updates on this? As I am un-commenting back in some 40x "rel_check" tests now, I noticed that "debug_test" is still commented out of 40x "ci_check". Did someone from Metrics have a look at it?

[MikeOpenHWGroup]

Sorry @silabs-robin, I have not had a look at this in a while. I am working with Metrics on a simulation-runtime performance issue that I suspect may be related to this. Once a new docker image for dsim is installed to resolve the performance issue I will look into this specific issue again.