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<p>Hi,</p>
<p>I have been trying to solve Generalized eigenvalue problem where the matrix is symmetric and of size around 10,000-20,000. I have been using default solver in PETSc. But compared to ScaLAPACK, I am having really bad performance in terms of execution time
even though I am requesting only 10% eigenvalues of the spectrum. I am a new user of PETSc. So, I really don't have a clear idea on how to use it efficiently. I will appreciate if anybody can please give me an idea to use PETSc effectively so that I can get
a much better performance than ScaLAPACK.</p>
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<p>Thanks<br>
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<p><span style="color:rgb(0,111,201)"><span style="color:rgb(0,111,201)"></span></span><span style="font-family:Georgia,serif; font-size:10pt; color:rgb(0,0,0)"><span style="color:rgb(0,0,0)"><span style="color:rgb(0,0,0)"><em style="color:rgb(0,0,0)"><strong style="color:rgb(0,0,0)"><span style="color:rgb(0,0,0)"></span></strong></em></span><em>M
Hassan</em><em style="color:rgb(0,0,0)"><span style="color:rgb(0,0,0)"></span></em></span></span><br>
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