Frequently Asked Questions (FAQ)

Install

• Why are unit tests failing with the error OSError: [Errno 24] Too many open files?
  Lava multiprocessing is trying to open too many file handles and linux is configured to allow less than the file handles lava is trying to open. This can be worked around by setting the number of open file limits or 'ulimit' higher: ulimit -n 4096
• Why are unit tests failing with the error "ModuleNotFoundError: No module named 'lava.magma'"?
  Please check that lava is installed, or python paths are setup correctly. One way of installing Lava is using pip:
  pip install .

Processes

• Why does my code deadlock/ hang/ wait indefinitely?
  You could be using a system of processes containing one process that is waiting for a signal at its input port. While this process waits for a signal, it blocks downstream activity. This is a common issue while designing recurrent processes. For further understanding/clarification on this problem please refer to https://github.com/lava-nc/lava/issues/32 and https://github.com/lava-nc/lava/issues/100