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

2005-06-19 Thread Peter Dalgaard
Peter Dalgaard <[EMAIL PROTECTED]> writes: > Peter Dalgaard <[EMAIL PROTECTED]> writes: > > > Prof Brian Ripley <[EMAIL PROTECTED]> writes: > > > > > I've seen many similar things in a report from valgrind. But they > > > went away when compiled without optimization: it seems optimization > > >

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

2005-06-18 Thread Peter Dalgaard
Peter Dalgaard <[EMAIL PROTECTED]> writes: > Prof Brian Ripley <[EMAIL PROTECTED]> 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 wh

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

2005-06-18 Thread Peter Dalgaard
Prof Brian Ripley <[EMAIL PROTECTED]> 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 st

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

2005-06-18 Thread Prof Brian Ripley
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 optimizat

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

2005-06-18 Thread Peter Dalgaard
[EMAIL PROTECTED] writes: > Full_Name: Benjamin Tyner > Version: 2.1.0, 4/18/2005 > OS: i686-redhat-linux-gnu > Submission from: (NULL) (4.64.8.220) > > > # Just run my.test() below in a newly opened R session. Once too many models > have been fit (~20 on my system), the computed standard error

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

2005-06-17 Thread btyner
Full_Name: Benjamin Tyner Version: 2.1.0, 4/18/2005 OS: i686-redhat-linux-gnu Submission from: (NULL) (4.64.8.220) # Just run my.test() below in a newly opened R session. Once too many models have been fit (~20 on my system), the computed standard error jumps to a different value. This is (superf