[petsc-users] About the MatGetOrdering in Petsc

[Wei Deng]

Dear Sir/Madam,

 

 

When I was trying to change a sparse matrix into a banded one, I can use RCM
in matlab to change it perfectly. But this does not work in Petsc, most
points were moved to the diagonal position. However, there are still some
points left, leading the width unacceptable.

 

Do you know why?

 

The attachment is the code with which I have trouble.

 

 

Thanks a lot.

 

 

Wei Deng

Purdue Uni.

 

 

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