https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-compute-eigenvalues-with-mkl-sparse-d-gv-routine/m-p/1206131#M29997 <P>Hello. I have a problem with&nbsp;computing eigenvalues of a general eigenvalue problem with mkl_sparse_d_gv routine. I have two finite element models that produce A and B matrices (B is positive definite). I need to solve [A]*v = [B]*v*k (where v is an eigenvector, k is an eigenvalue).</P> <P>The first model computes fine. (Matrices are in files: A.txt, B.txt).</P> <P>In the second model, I have just changed the mesh and mkl library throws an error. (Matrices are in files A_err.txt, B_err.txt).</P> <P>Actually, I work on AMD based computer (but I don't think it should cause a problem). I work on Windows 10 and use Visual Studio Community 2015 for developing.</P> <P>Also I present a source code (main.cpp) for the problem.</P> Wed, 02 Sep 2020 15:03:52 GMT Eugene_Pavlov 2020-09-02T15:03:52Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-compute-eigenvalues-with-mkl-sparse-d-gv-routine/m-p/1206131#M29997 <P>Hello. I have a problem with&nbsp;computing eigenvalues of a general eigenvalue problem with mkl_sparse_d_gv routine. I have two finite element models that produce A and B matrices (B is positive definite). I need to solve [A]*v = [B]*v*k (where v is an eigenvector, k is an eigenvalue).</P> <P>The first model computes fine. (Matrices are in files: A.txt, B.txt).</P> <P>In the second model, I have just changed the mesh and mkl library throws an error. (Matrices are in files A_err.txt, B_err.txt).</P> <P>Actually, I work on AMD based computer (but I don't think it should cause a problem). I work on Windows 10 and use Visual Studio Community 2015 for developing.</P> <P>Also I present a source code (main.cpp) for the problem.</P> Wed, 02 Sep 2020 15:03:52 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-compute-eigenvalues-with-mkl-sparse-d-gv-routine/m-p/1206131#M29997 Eugene_Pavlov 2020-09-02T15:03:52Z