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Issue in cluster_sparse_solver examples

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Hello,

I have an issue when using Parallel Direct Sparse Solver for Clusters. I modified a test case sample (cl_solver_sym_sp_0_based_c.c) in "mkl/example/examples_cluster_c.tgz" routines which includes a system of linear equation (AX=b) with a sparse symmetric matrix (A).

When I use the original file and run the code with different number of cores the code PASSES the test. But, when I modify just a member of A matrix (REPLACE THE DIAGONAL ELEMENT IN 2nd ROW from -4.0 to 0.0), the code fails when I use multiple cores. It works using 1 core. (I attached the modified file to this post)

The original shape of matrix is:

    float a[18] = { 7.0, /*0*/ 1.0, /*0*/ /*0*/  2.0,  7.0, /*0*/
                               -4.0, 8.0, /*0*/ 2.0,  /*0*/ /*0*/ /*0*/
                                       1.0, /*0*/ /*0*/ /*0*/ /*0*/ 5.0,
                                             7.0,  /*0*/ /*0*/ 9.0,  /*0*/
                                                    5.0,  1.0,  5.0,  /*0*/
                                                           -1.0, /*0*/ 5.0,
                                                                  11.0, /*0*/
                                                                           5.0

The modified

    float a[18] = { 7.0, /*0*/ 1.0, /*0*/ /*0*/  2.0,  7.0, /*0*/
                               -0.0, 8.0, /*0*/ 2.0,  /*0*/ /*0*/ /*0*/
                                       1.0, /*0*/ /*0*/ /*0*/ /*0*/ 5.0,
                                             7.0,  /*0*/ /*0*/ 9.0,  /*0*/
                                                    5.0,  1.0,  5.0,  /*0*/
                                                           -1.0, /*0*/ 5.0,
                                                                  11.0, /*0*/
                                                                           5.0

I am using these routines for couples of days and I may miss something.

Thank you for your help.

Nima Mansouri


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