FAQs and Known Issues

Q: My program does not terminate (i.e. it does not crash but runs forever) when I use pypet in multiprocessing mode in combination with matplotlib and savefig!?

A: Matplotlib uses numpy for linear algebra operations, these operations are often necessary when plotting. So, to solve the issues take a look at the next question.

Q: My program does not terminate (i.e. it does not crash but runs forever) when I use pypet in multiprocessing mode in combination with numpy and linalg.inv or some similar function!?

A: Numpy uses openBLAS (http://www.openblas.net/) to solve linear algebra operations. Yet, there are many issues with openBLAS and multiprocessing. To resolve this set the environment variable OPENBLAS_NUM_THREADS=1.