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Help! Negative output of IPARM (18) : Number nonzeros in factors.

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Hi,

Recently I solved a sparse non-symmetric real matrix equation with 2,785,003 unknowns,

The question is that I found Negative output of IPARM (18), which is the number of nonzeros in factors... , what's the meaning of this case?

As a result, the solution produced is wrong.

I wonder what's the problem, could anyone give me some information? Thanks a lot!

 

//---------------------------------------------- output information when callong PARDISO -------------------------------------

 Linear Solver : MKL PARDISO is starting...

 Reordering completed ...

 Number of non-zeros in  factors = [-1.206401e+009]   // This output is Negtive!

 Number of factorization MFLOPS  = [11120985]

 Factorization completed ...

 Solve completed ...

 

 


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