We support thread-pausing via instrumentation. This can cause threads to observe different interleavings, which can help uncover bugs in concurrent algorithms. At this time, we don't perform specific memory model fault injection or fuzzing.

I wrote a library called Temper, which simulates the Rust/C++ memory model with atomics in a similar way to Loom. But it goes much deeper on that narrow domain, and to my knowledge it's the most accurate library of its kind with the largest set of test cases.

If you simulate using mock CPU instructions like memfence or LL/CS there's no guarantee your model fits your ultimately executed program.

Unless of course, you do something like antithesis and directly test what compiled. It's an interesting alternative world.

I've taken the liberty of adding you to LinkedIn - would love to grab a drink next time you're in the SF Bay area.

https://github.com/reitzensteinm/temper