Hi Hong,
Thank you that was unclear to me, now I understand its purpose!
Thibaut
On 08/10/2019 16:18, Zhang, Hong wrote:
Thibaut :
Sorry, I did not explain it clearly. You call
MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);
AFTER matrix is assembled. Then no more new zero is allowed
Thibaut :
Sorry, I did not explain it clearly. You call
MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);
AFTER matrix is assembled. Then no more new zero is allowed to add/insert. For
example, I add following in
petsc/src/ksp/ksp/examples/tutorials/ex1.c:
ierr = MatAssemblyBegin(A,MAT_
Well, try and create a small SEQAIJ/MPIAIJ matrix and preallocate memory
for the diagonal.
When I try to call MatSetValues to fill the diagonal, on the first row I
get
[0]PETSC ERROR: Argument out of range
[0]PETSC ERROR: Inserting a new nonzero at (0,0) in the matrix
Which is within my prea
Thibaut:
Hi,
Just out of curiosity, I'm a bit confused by the parameter option
MAT_NEW_NONZERO_LOCATION_ERR.
It triggers an error if you try to insert/add a value in the non-zero
structure, regardless of the matrix preallocation status. In what case
would such an option be useful?
It triggers a
Hi,
Just out of curiosity, I'm a bit confused by the parameter option
MAT_NEW_NONZERO_LOCATION_ERR.
It triggers an error if you try to insert/add a value in the non-zero
structure, regardless of the matrix preallocation status. In what case
would such an option be useful?
Thank you,
Thib
