[R] R freezes on Xeon multiprocessor and Win 64-bit

[Valerio Orioli]

Hi everybody,

Performing a stepAIC on a glm.nb object, from a database of more than 
10,000 records and about 50 independent variables, on a 64-bit 
workstation with two Intel Xeon 3.20Ghz processors (keeping the 
HyperThreading option disabled in the BIOS), using 4 out of 7Gb 
available RAM, and Windows XP professional 64-bit, the system always 
freezes and it is no longer possible to use keyboard or mouse. In spite 
of that, the same analysis always works on other 32-bit old computers 
(Pentium IV with 1Gb RAM) with Windows XP professional 32-bit, although 
it tooks about 10 hours.
Has someone any suggestion to solve that problem?

Thank you in advance,

Valerio Orioli

________________________________________________
Valerio Orioli
Biodiversity Conservation Unit - 
http://www.disat.unimib.it/Biodiversity/index.htm
Department of Environmental and Landscape Sciences
University of Milano-Bicocca
Piazza della Scienza 1
I-20126 - Milano
ITALY

Phone: +39.02.6448.2918
E-mail: valerio.orioli at unimib.it