the inversion of large impedance matrix in MOM
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Hi all
I try to analyse a structure using method of moment which produces large dense squared impedance matrix. when I try to solve the matrix equation A*X=B, the inversion procedure takes more than 4GB RAMs.Is there any idea to solve this matrix equation in reasonable time with less RAMs?
6 Commenti
Steven Lord
il 14 Set 2015
How large is your "large dense" matrix?
Are you using a 32-bit or 64-bit version of MATLAB?
Can you easily compute A*x for a vector x without explicitly creating the matrix A? If so, use one of the iterative solvers like GMRES.
Risposte (1)
Walter Roberson
il 14 Set 2015
svd with 'econ' mode and see http://adrianboeing.blogspot.ca/2010/05/inverting-matrix-svd-singular-value.html
2 Commenti
Walter Roberson
il 14 Set 2015
Then the answer to your original question is NO. Install more RAM if the current size is a problem.
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