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Parallel executions

For long scripts we can use parallel execution to run multiple processing commands at the same time. Parallel execution requires that the commands can function independently of one another (i.e. there are commands that do not depend on each other's output). To use parallel execution use: pscons which launches the maximum number of parallel jobs that your computer can handle at once. Parallel execution can greatly speed up your processing flows if SCons can parallelize it. In the worst case, SCons won't be able to parallelize your script and it will run at the same speed as if you just used scons.