Speed of Octave (2)
===================

I decided  to investigate  the speed  issue a bit  more. It  seems that
solution of  system of linear  equations is  not the main  problem (the
Octave uses a native math library for  this task) but the other code is
(there is some  plotting which seems to be very  slow). I have obtained
similar numbers on my Intel machine at work.

And I  noticed that it does  not work on  my Raspberry Pi model  B. The
Octave fails with "illegal instruction"  message. It start, prints some
outputs and then if fails. I didn't have more time to investigate this.