Dear Steve
>
> I am having convergence problems while trying to fit a random regression
> model to some real data. I am getting the following message
>
> Univariate analysis of p8
> 7 23 0.000000000000000E+000 0
> Data occupies 58559 positions
> Forming 6911 equations: 3 dense
> 1 -51896.7646934.51 8364 1.000 1.000 0.100 1.000 1.000
> 0.100
> 1.000
> >>>>> >>>>> >>>>> >>>>> Iteration complete U+S=T 12.37
> fault: 2130
> >>>>> >>>>> >>>>> >>>>> Iteration complete U+S=T 0.25
>
>
> What exactly does 'fault: 2130' mean? I could not find reference
> to it in the manual. I hope that this leads me to some solution for my
> failed convergence.
Fault 2130 occurs when the residual sum of sqaures is < 1e-5.
Since you have competed one iteration, it is a problem
with the updated parameter values - pssibly forming a non positive
definite G matrix. You can just insert a !STEP .1 option and
try again. It may work.
Otherwise, run with -dl options and look at the updates in the .asl file
and see which ones are changing greatly or becoming non PD.
I hope you havn't worried all Easter about this.
Arthur
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Arthur Gilmour PhD email: Arthur.Gilmour@agric.nsw.gov.au
Senior Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture telephone work: <61> 2 6391 3815
Orange Agricultural Institute home: <61> 2 6362 0046
Forest Rd, ORANGE, 2800, AUSTRALIA
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