Sparse Matrix, Memory Allocation

*To*: mathgroup at smc.vnet.net*Subject*: [mg31608] Sparse Matrix, Memory Allocation*From*: Inkyu Rhee <Inkyu.Rhee at colorado.edu>*Date*: Fri, 16 Nov 2001 06:38:15 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

I have a 70000 by 70000(or more) banded sparse matrix. and this matrix will be updated by specific law for 50 loops. In each loop, I need to linear solution of this. My prblems are: I could not specify this matrix: K=Table[0,{70000},{70000}];(* Initialize the matrix K *) when I trying this in my machines ((1) sun:ram 750M, swap 2665M, (2) window:A800mhz, 128Mb), machine gives me 'Out of Memory, Exiting'. How do you specify this matrix efficiently? If this works well, I will update these components of matrix using certain law. Then I need to solve the equations. Developer`SparseLinearSolve[K,x] I tried this part using 10000 by 10000 instead of 70000. It also give me 'Out of Memory ...'. Thanks for any help, I. Rhee

**Follow-Ups**:**Re: Sparse Matrix, Memory Allocation***From:*Daniel Lichtblau <danl@wolfram.com>