Re: steady state finder! still works after 6 hours!

[Thomas D. Dean]

On 07/19/15 10:34, Leo07nard wrote:
> Hey Everybody,
>   I am a working on a new economic model.I have tried to write the codes to
> solve this DSGE model in Octave and find the steady state for using next in
> Dynare. But I ran the program this morning and after 6 hours, it is still
> working without any change! Is there anybody who can tell me what is
> happening? what is the meaning of this? Does it mean there is no solution
> for this problem? I put the source and the picture of the last line of
> octave here.
>   Also octave always warns me by " warning: Using rat() heuristics for
> double-precision input (is this what you wanted?)" , what is the meaning of
> this?
>
> octave.jpg <http://octave.1599824.n4.nabble.com/file/n4671705/octave.jpg>
> exam4.m <http://octave.1599824.n4.nabble.com/file/n4671705/exam4.m>

Octave 4.1.0+, I do not get any solution within a reasonable time, 5 
minutes...  Maybe a problem with SymPy or the interface between octave 
and SymPy is sloooow???

Using maple 15 and fsolve, the solution is returned quickly.

{Qbar = 146.1859101, Omegabar = 1.155594736}

Tom Dean