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Re: efficiency of eigenvalue calculations [message #55286 is a reply to message #55199]

Tue, 07 August 2007 19:02

Kenneth P. Bowman
Messages: 585
Registered: May 2000

Senior Member

In article <46b8d3fb$0$495$815e3792@news.qwest.net>,
"R.G. Stockwell" <noemail@please.com> wrote:

> any have experience with solving eigenvalue problems
> in IDL, as compared to how fast it is in Fortran?
>
> I have some legacy code that uses eigenvector/value
> decompositions, on arrays of the size 200 by 50.
> However, it has to do thouasands of them.
>
> Is IDL (trired and triql for instance) nearly as fast as Fortran for this
> stuff, or should
> I stay with fortran?
>
>
> Cheers,
> bob

I would try LA_TRIRED and LA_TRIQL. They probably *are* Fortran
(or optimized C).

Ken Bowman

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		efficiency of eigenvalue calculations By: R.G.Stockwell on Tue, 07 August 2007 13:20
		Re: efficiency of eigenvalue calculations By: Kenneth P. Bowman on Tue, 07 August 2007 19:02

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