n-diagonal matrix

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n-diagonal matrix

Postby Andrea » Thu Dec 01, 2011 3:44 pm

Again me with sgbsv troubles ... I am trying to solve the system I have attached in the file with the sgbsv routine (N=25, KL=5, KU=5, NRHS=1, LDAB=16), but I obtain a INFO =1.
I calculated the matrix determinant and it is not a singular matrix, and I also could solve a symilar one (but just 10x10) with python.
I need to use it in fortran because I call the routine in differente time steps of my transient problem.
Many thanks in advance if anyone can help me.
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