This project has been developed to meet lowRISC's internal need and is not supported by lowRISC.
This is a very simple tool that performs parallel local file copy.
It's aimed at speeding up copying when one of the locally mounted file system is actually over network and therefore has high latency and cp or rsync is using tiny fraction of your network bandwidth or disk IO.
Being a simple tool, it has minimal error handling -- use with care.
parallel-cp <SRC> <DST>
Both <SRC> and <DST> should be directories.
They're not interpreted like cp: if you run parallel-cp a b and b is an existing directory, it does not copy a to b/a.
This operates like cp --no-target-directory.
Files nested under <SRC> with path <SRC>/foo/bar will be copied to <DST>/foo/bar.
By default this tool has parallel equal to the number of CPU cores.
For network file systems, this might be further increased to improve throughput.
You can set RAYON_NUM_THREADS to override the default.