[BioC] vector allocation error

Thomas Girke thomas.girke at ucr.edu
Fri Jun 23 15:23:18 CEST 2006


Only on machines with 64 bit CPUs (e.g. Opteron) you can allocate more 
than 2-3 GB of RAM to a single process. Your Xeon CPUs are 32 bit which 
have a 'physical' memory limit. It is a nice machine to dedicate lots of 
memory to multiple processes, but never much more than 2 GB to a single 
one no matter what operating system you are using.

Upgrading your tetrad board to 64 bit may be more pricy than getting a
new single or dual 64 bit CPU (e.g. Opteron, MacG5) workstation with a 
unix type operating system (e.g. Linux, Mac OSX).


On Fri 06/23/06 14:53, Ulrich Pfeffer wrote:
> Hi,
> when analyzing more than 25 Affymetrix HGU133plus2 arrays the analysis 
> fails during background correction with GCRMA and the error message says 
> "cannot allocate vector of 301.000kB ...."
> I got the message ot only from my PC but also form a more potent computer 
> (Ml570 G2,  4 CPU XEON MP 2.5/1Mb,
> 16 Gb RAM, s.o.  RH AS 4.0). It does not appear that the computer is using 
> all the memory available.
> After my actual 30 arrays I must analyze 380, which problems will I face?
> Any help?
> Thanx,
> Uli
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Thomas Girke, Ph.D.
1008 Noel T. Keen Hall
Center for Plant Cell Biology (CEPCEB)
University of California
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E-mail: thomas.girke at ucr.edu
Website: http://faculty.ucr.edu/~tgirke
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