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by fiddlerwoaroof
1228 days ago
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I’m a bit suspicious of the section saying “Maxima is slow” blaming linked lists. Maxima is built on Common Lisp which definitely has arrays and vectors, so the claims made there seem a bit uninformed. I don’t really know enough math to judge the rest, though. |
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Anectote time: I used Mathematica many years ago. One surprising thing was that when you update the content of a vector, Mathematica creates a new vector and copies the content of the old vector. If you just copy an algorithm from C to Mathematica, it may be N times slower because it's creating a lot of intermediate vectors. So you must rewrite your code using "fold", or something like that. It was a long time ago, so I'm not sure if they have already added some trick to optimize code from people like me that don't know what they are doing. If Mathematica or Maxima has this trick but the other doesn't, it may cause a huge difference of time between algorithm that look very similar. Anyway, this is totally unrelated to lists.