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MatrixPower is slow with Mathematica 8

  • To: mathgroup at smc.vnet.net
  • Subject: [mg121296] MatrixPower is slow with Mathematica 8
  • From: "Genoni, Marco G" <m.genoni at imperial.ac.uk>
  • Date: Thu, 8 Sep 2011 05:25:38 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi,
I switched to the new version of Mathematica a week ago and
today I was working on an old notebook.

I noticed that the function "MatrixPower" is incredibly slower than in
version 7.0 (I'm using it for a quite involved 4x4 matrix... ).
I tried to run the same notebook both on my desktop and my
macbook, and I got the same problem.
I wonder if anyone has noticed the same problem and if there
is maybe a new/different function that I can use...
(ok, I can try to diagonalise and "power the matrix with my
own hands", but I hope there is a different solution...)

Thank you!




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