R help - Jun 2006 - Inverting a large Matrix (14000 x 14000)

Hi..
  
    I have to invert a 15000 x 15000 matrix  (generalized  inverse). I do run
the process on a fairly powerful computer. but still  complains indufficient
memory.
  
  Is there a way one can invert a large matrix in some other efficient manner.
  
  Thanks
  Harsh
  
 		
---------------------------------

	[[alternative HTML version deleted]]

>>>>> "Cal" == Cal Stats <calstats05 at
yahoo.com>
>>>>>     on Sun, 25 Jun 2006 01:14:34 -0700 (PDT) writes:
    Cal> Hi..  I have to invert a 15000 x 15000 matrix
    Cal> (generalized inverse). I do run the process on a fairly
    Cal> powerful computer. but still complains indufficient
    Cal> memory.
  
    Cal>   Is there a way one can invert a large matrix in some
    Cal> other efficient manner.

Is the matrix sparse, i.e., has most of its entries == 0 ?
If yes, then there are more efficient ways, notably in packages
'SparseM' and 'Matrix'.
  
    Cal>   Thanks Harsh