[R] Spare some CPU cycles for testing lme?

Tamas K Papp tpapp at Princeton.EDU
Tue Sep 14 01:47:23 CEST 2004


On Mon, Sep 13, 2004 at 08:40:15AM -0400, Frank Samuelson wrote:

> 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
> })

Hi,

It ran smoothly on my installation.

> version  
         _                      
platform powerpc-apple-darwin6.8
arch     powerpc                
os       darwin6.8              
system   powerpc, darwin6.8     
status                          
major    1                      
minor    9.1                    
year     2004                   
month    06                     
day      21                     
language R                      

Typical lines from top (if it helps anything; around 45-50k
iterations):

1225 R.bin       90.7%  2:55:12   1    62  1164  71.7M+ 13.7M  66.6M+  228M+
1225 R.bin       78.6%  3:18:27   1    62  1606  81.3M+ 13.7M  75.5M+  234M+

Best,

Tamas




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