It would be a natural step to apply TSan on an OpenMP code, but please note that OpenMP is known to generate false positives under TSan, in some cases. For the Clang compilers, a workaround would be to recompile the compiler itself, and its libomp, with -DLIBOMP_TSAN_SUPPORT=TRUE. In general, using sanitizers in a sensible way may require a recompilation of the entire tool-stack, in order to avoid false positives. This will probably be the case for a C++ project using pybind11; we would need to recompile Python with the sanitizers enabled to get anything meaningful. Alternatively, the Python binding can be left out from the sanitizing by using sanitizer suppression, as explained at https://github.com/google/sanitizers/wiki/ThreadSanitizerSuppressions. This may not be possible if, for example, a shared library is called by both by a sanitized binary and a Python plugin.