Parallelize over CPUs

[CodyCBakerPhD]

To avoid race conditions and other complexities, the strategy is as follows:

• Write each CPUs parsed logs to a separate folder (temporary directory)
• After all jobs are complete, merge all parsed logs into a single folder (by stacking contents per asset file) (still in a temporary directory)
• The resulting parsed log folder will be out of chronological order, so write an ordered copy to the final intended destination

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