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Error scaling in ODE-IV


I am using the ODE-initial value routines from GSL. In looking at section 24.3 or the GSL manual, I note that there does not appear to be any scaling array for the error calculation in the adaptive algorithms. eps_rel and eps_abs are scalars. Most ODE systems, however, are not naturally scaled so all components have the same scale so it is very difficult to optimize performance.

Am I missing something or is this the intended usage?

Thanks
Dave Auslander

PS - many thanks to the GSL developers. This is a huge, very useful effort.


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David M. Auslander, Prof. of ME and Assoc. Dean
Mechanical Engineering, Univ of Calif, Berkeley, CA 94720-1740
Dean's office: 510-642-7594 ME: 510-642-4930 Fax: 510-643-5599
dma@me.berkeley.edu www.me.berkeley.edu/~dma
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