tool for approximation of condition number
Dear
I need a tool for approximation of condition number of large sparse matrix (performance is important because i deal with transient problem), do you knowe such tool? (note that i knowe that MATLAB perform this but it is very slow and memory intensive so it is not practical for large problem, also i knowe numerical algorithm for this but prepared tool, free from bug, is desired) 
Re: tool for approximation of condition number

Re: tool for approximation of condition number
I deal with large sparse matrix not full matrix, so application of mentioned package is not practical (it is very time consuming O(n^3)+ O(n^2) and also severly memory intensive).
Have other people better suggestion? 
Re: tool for approximation of condition number

Re: tool for approximation of condition number
Dear Renato
Do you are certain that SPARSEKIT has such tool, i work with it in previous and don't think there is, but if you knowe more please address related subroutine in SPARSEKIT, with regard. 
Re: tool for approximation of condition number
Sorry... I misunderstood the packages...
Instead of Sparsekit I should have written LINPACK and/or LAPACK. regards Renato. 
Re: tool for approximation of condition number
Thanks Renato,
Althouth i don't get my answer but LINPACK is better than previous suggestion (it estimate condition nummber for full and banded matrixes not for general sparse). 
All times are GMT 4. The time now is 18:34. 