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

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.