Fast 4D argmax

General Usage Performance
23

The performance here is indeed dominated by array transformation. Typically, the time can be decomposed into three parts.

  1. JuliaCall interface function time cost (julia_call on the order of 10 microsends, julia_command on the order of 100 microseconds).
  2. data transfer time cost, which will be on the order of milliseconds for a large data set like this.
  3. julia function time cost.
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