From p.dalgaard at biostat.ku.dk  Sat Jun 18 11:15:03 2005
From: p.dalgaard at biostat.ku.dk (Peter Dalgaard)
Date: 18 Jun 2005 11:15:03 +0200
Subject: [Rd] loess returns different standard errors for identical
	models (PR#7956)
In-Reply-To: <Pine.LNX.4.61.0506180951360.3194@gannet.stats>
References: <20050618041919.7F1CCA207@slim.kubism.ku.dk>
	<x2y898hxxo.fsf@turmalin.kubism.ku.dk>
	<Pine.LNX.4.61.0506180951360.3194@gannet.stats>
Message-ID: <x2u0jwhvqg.fsf@turmalin.kubism.ku.dk>

Prof Brian Ripley <ripley at 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.


-- 
   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 at biostat.ku.dk)                  FAX: (+45) 35327907



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