Re: [Rd] loess returns different standard errors for identical models (PR#7956)

From: Peter Dalgaard <p.dalgaard_at_biostat.ku.dk>
Date: Sat 18 Jun 2005 - 10:34:19 GMT

Peter Dalgaard <p.dalgaard@biostat.ku.dk> writes:

> Prof Brian Ripley <ripley@stats.ox.ac.uk> writes:
>
> > I've seen many similar things in a report from valgrind. But they
> > went away when compiled without optimization: it seems optimization
> > often does a fetch one element off the end of an array when attempting
> > to keep the pipelines full.
>
> > I'd start by re-running the valgrind tests without optimization.
>
> I was going to anyway, but the reported problem did carry all the
> hallmarks of the use of a memory location with random content.

Still present with "-g" recompile, and a breakpoint in lowesb showed that the last call had garbage in the "iv" array.

-- 
   O__  ---- Peter Dalgaard             ุster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)                  FAX: (+45) 35327907

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Received on Sat Jun 18 20:51:32 2005

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