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On Wed, 9 Nov 2005, Michael wrote:
FWIW, a simple for loop is about 300 times faster
in mono than in Octave.
Hopefully the porting will result in code cleanup and refactoring that
will allow Octave programs to run at close to that 300x speed though. A
common execution core shared between languages is a good idea partly
because the reuse of code should result in a better and faster execution
core. From this post it sounds as if Octave isn't terribly effecient in
how it does this right now.
Loops are slow in Octave. It is fast on most matrix computations. We
therefore try very hard to vectorize every function. Sometimes
vectorizing uses a lot of memory for a short time, but it speeds up the
code. R is faster than Octave on loops.
Mike
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