I tried out your example and it abended.
It ran through 22472 times and ended with an error message that the
instruction at 0x77f5b2ab could not reference location 0x00000028.
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 1
minor 9.1
year 2004
month 06
day 21
language R
HTH
__________________________________________________________
James Holtman "What is the problem you are trying to solve?"
Executive Technical Consultant -- Office of Technology, Convergys
[EMAIL PROTECTED]
+1 (513) 723-2929
Frank Samuelson
<[EMAIL PROTECTED]> To: [EMAIL PROTECTED]
Sent by: cc:
[EMAIL PROTECTED] Subject: [R] Spare some CPU cycles for
testing lme?
ath.ethz.ch
09/13/2004 08:40
If anyone has a few extra CPU cycles to spare,
I'd appreciate it if you could verify a problem that I
have encountered. Run the code
below and tell me if it crashes your R before
completion.
library(lme4)
data(bdf)
dump<-sapply( 1:50000, function(i) {
fm <- lme(langPOST ~ IQ.ver.cen + avg.IQ.ver.cen, data = bdf,
random = ~ IQ.ver.cen | schoolNR);
cat(" ",i,"\r")
0
})
The above code simply reruns the example from the
lme help page a large number of times and returns a bunch
of 0's, so you'll need to have the lme4 and Matrix
packages installed. It might take a while to complete,
but you can always nice it and let it run.
I'm attempting to bootstrap lme() from the lme4 package,
but it causes a
segfault after a couple hundred iterations. This happens on
my Linux x86 RedHat 7.3, 8.0, 9.0, FC1 systems w/ 1.9.1
and devel 2.0.0 (not all possible combinations actually
tested.)
I've communicated w/ Douglas Bates about this and he
doesn't appear to have the problem.
Thanks for any help.
-Frank
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