[R] lmer2 error under Mac OS X on PowerPC G5 but not on Dual-Core Intel Xeon

[Benilton Carvalho]

So, I decided to give it a try (and just now noticed that this is the  
example in lmer2)

I just gave it a try on a PPC G4 and it worked as expected. I'm  
copying R-sig-mac (sorry for the crosspost) as the experts there  
might give you a better suggestion.

 > fm1 <- lmer2(Reaction ~ Days + (Days|Subject), sleepstudy)
 > fm1
Linear mixed-effects model fit by REML
Formula: Reaction ~ Days + (Days | Subject)
    Data: sleepstudy
   AIC  BIC logLik MLdeviance REMLdeviance
1754 1770 -871.8       1752         1744
Random effects:
Groups   Name        Variance Std.Dev. Corr
Subject  (Intercept) 612.128  24.7412
           Days         35.049   5.9202  0.066
Residual             654.970  25.5924
Number of obs: 180, groups: Subject, 18

Fixed effects:
             Estimate Std. Error t value
(Intercept)  251.405      6.825   36.84
Days          10.467      1.545    6.77

Correlation of Fixed Effects:
      (Intr)
Days -0.137
 > sessionInfo()
R version 2.5.0 Under development (unstable) (2007-01-03 r40349)
powerpc-apple-darwin8.8.0

locale:
C

attached base packages:
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"   
"methods"
[7] "base"

other attached packages:
        lme4      Matrix     lattice
"0.9975-11"  "0.9975-8"   "0.14-16"


On Jan 29, 2007, at 7:40 AM, Michael Kubovy wrote:

> On Jan 28, 2007, at 9:39 PM, Benilton Carvalho wrote:
>
>> This seems to be due to the fact that you didn't have enough  
>> memory when running lmer2.
>>
>> I might be wrong, but I think Calloc tries to get contiguous  
>> memory, so this might the problem.
>>
>> If you are positive that you have enough memory, a gc() might help.
>
> I have 2 GB memory on this machine. Should be enough, no?
>
> > gc()
>           used (Mb) gc trigger (Mb) max used (Mb)
> Ncells 1008175 27.0    1476915 39.5  1368491 36.6
> Vcells  540055  4.2    1031040  7.9  1031026  7.9
> > (fm1 <- lmer2(Reaction ~ Days + (Days|Subject), sleepstudy))
> Error in as.double(start) : Calloc could not allocate (903190944 of  
> 4) memory
>
>
>> On Jan 28, 2007, at 8:35 PM, Michael Kubovy wrote:
>>
>>>> (fm1 <- lmer2(Reaction ~ Days + (Days|Subject), sleepstudy))
>>> Error in as.double(start) : Calloc could not allocate (888475968 of
>>> 4) memory
>>> *************************
>>>> sessionInfo()
>>> R version 2.4.1 (2006-12-18)
>>> powerpc-apple-darwin8.8.0
>>>
>>> locale:
>>> C
>>>
>>> attached base packages:
>>> [1] "grid"      "datasets"  "stats"     "graphics"  "grDevices"
>>> "utils"     "methods"
>>> [8] "base"
>>>
>>> other attached packages:
>>>          lme4       Matrix       xtable latticeExtra      lattice
>>> gridBase         MASS
>>> "0.9975-11"   "0.9975-8"      "1.4-3"      "0.1-4"    "0.14-16"
>>> "0.4-3"     "7.2-31"
>>>           JGR       iplots       JavaGD        rJava
>>>      "1.4-15"      "1.0-5"      "0.3-5"     "0.4-13"
>>> *************************
>>> lmer runs the example w/o a problem
>>>
>>> I just tried to run it on on Intel-based MacPro, and lmer2 ran
>>> without a hitch.
> _____________________________
> Professor Michael Kubovy
> University of Virginia
> Department of Psychology
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>