Github user VinceShieh commented on the issue:
https://github.com/apache/spark/pull/17894
Forgot to mention, we observed a nearly 2x performance gain with the help
of nativeBLAS- MKL, without a fine tuning, so if we can also make F2J version
run faster in distributed cluster than the current design, it would truly be a
good PR for community. :)

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