[R] Optimizing compilation of R

[Rainer M Krug]

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Hi

I know this has been asked before, but I can not find it - so my apologies.

I want to compile R myself, to optimize it for speed. There is a small
section (a few lines actually) in the R-admin manual (Compilation-flags)
which states that the LDFLAGS "on recent systems
‘'-Bdirect,--hash-style=both,-Wl,-O1'’ is recommended".

But I set LDFLAGS, and it is actually slightly slower then the Ubuntu
binary.

So are there any other ressources (probably HotTos?) on how I can tune
the compilation of R to make it faster?

I am using Maverick, and R info is below:

############
> sessionInfo()
R version 2.12.0 (2010-10-15)
Platform: i686-pc-linux-gnu (32-bit)

locale:
 [1] LC_CTYPE=en_US.utf8       LC_NUMERIC=C
 [3] LC_TIME=en_US.utf8        LC_COLLATE=en_US.utf8
 [5] LC_MONETARY=C             LC_MESSAGES=en_US.utf8
 [7] LC_PAPER=en_US.utf8       LC_NAME=C
 [9] LC_ADDRESS=C              LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C

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

loaded via a namespace (and not attached):
[1] tools_2.12.0
> version
               _
platform       i686-pc-linux-gnu
arch           i686
os             linux-gnu
system         i686, linux-gnu
status
major          2
minor          12.0
year           2010
month          10
day            15
svn rev        53317
language       R
version.string R version 2.12.0 (2010-10-15)
############


Thanks,

Rainer

- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Natural Sciences Building
Office Suite 2039
Stellenbosch University
Main Campus, Merriman Avenue
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email:      Rainer at krugs.de

Skype:      RMkrug
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