[Bonmin] Negative cpu secs?

[Pierre Bonami]

Hi Rodrigo,
I had never seen this before. Do you get it only with Bonmin or also  
with Ipopt?

Best,
Pierre
On May 6, 2007, at 12:32 AM, Rodrigo López Negrete de la Fuente wrote:

> Hi all,
>
> I've been noticing that, sometimes, ipopt returns negative time  
> values when using bonmin. I'm not sure where the error could be,  
> but for example I sometimes get:
>
> [ sniped output ...]
> Number of Lagrangian Hessian evaluations             = 135
> Total CPU secs in IPOPT (w/o function evaluations)   =   -267.789
> Total CPU secs in NLP function evaluations           =    548.166
>
> EXIT: Optimal Solution Found.
> IpOp0006I Ipopt return (for resolve): status  0, iter count  135,  
> time 280.378
> IpOp0009I     3        OPT         3095.02        135      280.378
>
> I wish to properly report the time that the solver took, but I'm  
> not sure if I should add the absolute values or if there really is  
> a problem in the timing functions. Has anybody else seen this type  
> of behavior? Any ideas?
>
> Thanks,
>   Rodrigo
>
>
> -- 
> Rodrigo López Negrete
> http://muon.blogdns.org/~rush/
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