On Thursday, 16 October 2014 18:04:39 UTC+8, Jony Hudson wrote: > > Thanks @Mikera. I had a look at using core.matrix, but what I couldn't > figure out is how to quickly get the data into core.matrix form. For > instance, if I take my PersistentList of Doubles from the example then > getting it into a vectors array takes: > > (criterium/quick-bench (array :vectorz a)) > > Execution time mean : 70.764422 µs > > > so for the example above I'm no better off overall. Obviously, the ideal > would be to use vectorz arrays all through the application, but I'm not sure > that's going to be so easy in this case. Is there a quick way to marshall > data into a vectorz vector? > > > Hmmm I think you've actually hit a performance issue in the conversion of Clojure vectors to Vectorz format. I just patched this in the latest core.matrix snapshot, the conversion is now around 20µs
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