Re: [eigen] Parameters in Levenberg Marquard algorithm of wrong type?

[Tim Holy <holy@xxxxxxxxx>]

Hi Claas,

On Tuesday, March 20, 2012 07:19:31 am Claas H. Köhler wrote:
> - Is there a reason why all local temporary variables (e.g temp, temp1,
> pnorm...) are defined as class members, instead of defining locally
> where needed?

I don't know specifically for this case, but in general it's for cases where 
you call the same algorithm many times in one program. If you put them in the 
class, you only have to allocate the storage once, when you first construct the 
solver. If they are local to the function, you have to allocate them each time 
the function is called. In many cases, that's a major overhead and 
significantly hurts performance.

Best,
--Tim