<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><P>Hello,</P>
<P> I use MatIsSymmetric to know if the matrix A is symmetric.</P>
<P>According to my model, it should be symmetric due to the theory.</P>
<P>But I always get the result 'PetscBool *flg = 0', although I </P>
<P>set 'tol' a large value(0.001).</P>
<P> Because the matrix is of 20000 dimension, I can not output the</P>
<P>matrix to the txt. So I want to konw if there is something to be paid attention to</P>
<P>about the function 'MatIsSymmetric' in version 3.2. Or do I have some other ways</P>
<P>to determine the symmetry.I think symmetry is one of the most important thing</P>
<P>in my analysis.</P>
<P> Thanks.</P>
<P> Jim</P>
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