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<p><span id="ms-rterangepaste-start"></span><span style="font-size:12pt;background-color:white;"><font face="Calibri,Arial,Helvetica,sans-serif"></p>
<div style="margin-top:0;margin-bottom:0;">Hi all,</div>
<div style="margin-top:0;margin-bottom:0;">I have been trying to solve generalized eigenvalue problem using matrices of size 10K. Sparsity of the matrix is 6%. I am using the following command
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<div style="margin-top:0;margin-bottom:0;">./solver -f1 hamold.petsc -f2 ovlbaby.petsc -st_ksp_type preonly -st_pc_type jacobi -st_pc_factor_mat_solver_package mumps -eps_interval -2,0 -eps_nev 1000</div>
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<li>solver is the program</li><li>f1 and f2 are the input file for both matrices in petsc binary (mpiaij)</li></ul>
<div style="margin-top:0;margin-bottom:0;">I am getting the following output:</div>
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<div style="margin-top:0;margin-bottom:0;"> </div>
<div>Generalized eigenproblem stored in file.<br>
<br>
Reading REAL matrices from binary files...<br>
TYPE OF MATRIX A: mpiaij<br>
TYPE OF MATRIX B: mpiaij<br>
Solving for Eigen values...<br>
Solved! <br>
1: -9771.8339 0<br>
2: -9559.8347 0<br>
3: -9408.5603 0<br>
4: -9387.423 0<br>
5: -9235.9137 0<br>
6: -9102.5334 0<br>
7: -9098.1307 0<br>
8: -8970.3594 0<br>
9: -8854.4964 0<br>
10: -8850.3629 0<br>
11: -8736.6619 0<br>
12: -8637.1749 0<br>
13: -8628.214 0<br>
14: -8524.2494 0<br>
15: -8440.0801 0<br>
16: -8424.1789 0<br>
17: -8327.5389 0<br>
18: -8257.7763 0<br>
19: -8233.9564 0<br>
20: -8143.1251 0<br>
21: -8086.9865 0<br>
22: -8054.7899 0<br>
23: -7968.7355 0<br>
24: -7925.5421 0<br>
25: -7884.7777 0<br>
26: -7802.7577 0<br>
27: -7771.913 0<br>
28: -7722.537 0<br>
29: -7643.9943 0<br>
30: -7624.9684 0<br>
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<div style="margin-top:0;margin-bottom:0;"> </div>
<div style="margin-top:0;margin-bottom:0;"> .........................</div>
<div style="margin-top:0;margin-bottom:0;"> .........................<br>
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<div> 541: -24.947288 0<br>
542: -24.945875 0<br>
543: -24.94017 0<br>
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<div style="margin-top:0;margin-bottom:0;"> </div>
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<div style="margin-top:0;margin-bottom:0;">First column is the eigenvalues. <br>
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<div style="margin-top:0;margin-bottom:0;">My concern is, <br>
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<li>Eigenvalues are not right</li><li>I defined the interval but still it's giving me eigenvalues outside of that interval</li></ul>
<div style="margin-top:0;margin-bottom:0;"> Please help me out.</div>
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<div style="margin-top:0;margin-bottom:0;">M Hassan</div>
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