[petsc-users] MatMult doesn't give the correct result

[Longmin RAN]

Dear all,

I tried to use MatMult on a 2*2 matrix but could not get the right answer.
With MatView I saw the Matrix was correctly defined as :
     row 0: (0, 0.707107)
     row 1: (1, 0.707107)

The vector to be multiplied is
     0
     -0.0141421

But MatMult gave the result vector as
     0
    -0.01

Has anyone a clue to the problem? Thank you for you help in advance.


Cheers,

Longmin
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