Add Matt mentioned, with ADD_VALUES, the values will be added. But with
INSERT_VALUES, if it is a sequential vector (VECSEQ), it will overwrite
with the last value; but if it is an MPI parallel vector (VECMPI), it is
undetermined, as you could not even define "which is the last" (assuming
duplic
On Tue, Jan 14, 2025 at 9:06 AM Mark Adams wrote:
> INSERT_VALUES is clearly an error, but we can't check that easily so you
> will probably just get the last value, and ADD_VALUES should work.
>
For INSERT_VALUES, it will overwrite with the last value. For ADD_VALUES,
it will add.
Thanks,
INSERT_VALUES is clearly an error, but we can't check that easily so you
will probably just get the last value, and ADD_VALUES should work.
Mark
On Tue, Jan 14, 2025 at 8:20 AM Venkata Narayana Sarma Dhavala <
dhav...@udel.edu> wrote:
> Dear PETSc Development Team,
>
> I hope this message finds
Dear PETSc Development Team,
I hope this message finds you well. I am currently working with the
VecSetValues() function in PETSc, and I have a question regarding its
behavior when there are duplicate indices in the input array.
PetscErrorCode VecSetValues(Vec x, PetscInt ni, const PetscInt ix[],
