I am working on a path tracer in Mojo. It works well single-threaded but crashes with a SIGBUS (Misaligned address error) when I parallelize it, and the stack trace isn’t very useful. Here’s the commit that does parallelization, which as you can see it’s a fairly trivial change: fails with SIGBUS · int3/mpt@c6e9894 · GitHub
Almost all the shared state is read-only, and in fact the SIGBUS still occurs after I remove the writes to image, so I guess something is up with the shared read-only state. It’s not clear to me which of them might need to get aligned though. Help would be greatly appreciated!