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Re: NEWTON: Roundoff problem in lnsrch_d [message #91064 is a reply to message #91062]

Fri, 29 May 2015 13:19

Russell[1]
Messages: 101
Registered: August 2011

Senior Member

On Friday, May 29, 2015 at 2:14:45 PM UTC-4, Nikola Vitas wrote:
> I'm solving a system of equations using the intrinsic NEWTON function. For many cases it work fine, but for some cases my code is crashing with a bit cryptic message:
>
> NEWTON: Roundoff problem in lnsrch_d
>
> I can't google anything on it. Any clues where to look? I guess it indicates a convergence problem, still it's difficult to diagnose what's going on without understanding the message (and without going step by step through NEWTON).
>
> Thanks!

I have no idea what the error means, but just to be clear what options are you using? Double? Tolerence? etc.

-R

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[Message index]

		NEWTON: Roundoff problem in lnsrch_d By: Nikola on Fri, 29 May 2015 11:14
		Re: NEWTON: Roundoff problem in lnsrch_d By: Russell[1] on Fri, 29 May 2015 13:19
		Re: NEWTON: Roundoff problem in lnsrch_d By: Nikola on Fri, 29 May 2015 15:03
		Re: NEWTON: Roundoff problem in lnsrch_d By: Matthew Argall on Fri, 29 May 2015 16:30

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