Note that PETSc's formats are more space-efficient and faster than the
COO (triplet) format. If you can produce triplet chunks instead of the
full matrix, you can add them incrementally to reduce the peak memory
usage. Note that many preconditioners use storage similar to (or
greater than) a
Since PETSc does not use that format there, of course, has to be a time when
you have duplicate memory.
Barry
> On Jan 9, 2020, at 12:47 PM, Sam Guo wrote:
>
> Dear PETSc dev team,
>Suppose I have the matrix already in triplet format int int[] I, int[] J,
> double[] A, Is
Dear PETSc dev team,
Suppose I have the matrix already in triplet format int int[] I, int[]
J, double[] A, Is possible to create petsc matrix using A without copying?
I like to avoid the duplicate memory if possible.
Thanks,
Sam
