Update main.py tutorial, set persistent_workers, make GPU execution faster#1368
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…uch faster Since we are setting num_workers to 1, we should either make this worker persistent or not set the num_workers. On my machine, running this script as is takes 2.21 mins, setting the workers to persistent or removing num_workers (setting to its default of 0) makes it a good deal faster at 1.44 and 1.66 mins respectively. I would opt for adding the persistent_workers setting as it is a little faster and makes it trivial for even a beginner to speed it up further by increasing the num_workers (setting to 10 reduced my run time to 0.53 mins
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Since we are setting num_workers to 1, we should either make this worker persistent or not set the num_workers. On my machine, running this script as is takes 2.21 mins, setting the workers to persistent or removing num_workers (setting to its default of 0) makes it a good deal faster at 1.44 and 1.66 mins respectively.
I would opt for adding the persistent_workers setting as it is a little faster and makes it trivial for even a beginner to speed it up further by increasing the num_workers (setting to 10 reduced my run time to 0.53 mins