Issue using bicgstab with ilu for preconditioning
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I'm coding a 2D CVFEM solver using bicgstab with ilu to get preconditioners and I'm getting the following error:
??? Error using ==> ilu There is a pivot equal to zero. Consider decreasing the drop tolerance or consider using the 'udiag' option.
I use the udiag option and a different factorization options (crout, milu, etc) with same result.
What you think is the origin of my problem?
Thanks in advance.
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