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June 22, 2006, 03:03 |
tool for approximation of condition number
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#1 |
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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) |
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June 22, 2006, 03:28 |
Re: tool for approximation of condition number
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#2 |
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June 22, 2006, 09:31 |
Re: tool for approximation of condition number
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#3 |
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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? |
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June 23, 2006, 07:23 |
Re: tool for approximation of condition number
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#4 |
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June 23, 2006, 08:22 |
Re: tool for approximation of condition number
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#5 |
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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. |
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June 23, 2006, 09:22 |
Re: tool for approximation of condition number
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#6 |
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Sorry... I misunderstood the packages...
Instead of Sparsekit I should have written LINPACK and/or LAPACK. regards Renato. |
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June 24, 2006, 03:42 |
Re: tool for approximation of condition number
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#7 |
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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). |
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