[petsc-users] Question about handling matrix

[Jed Brown]

Is the small matrix dense? Then you can use MatSetValues. If the small matrix is sparse, you can assemble it with larger dimension (empty rows and columns) and use MatAXPY.

김성익 <ksi2443 at gmail.com> writes:

> Hello,
>
>
> I want to put small matrix to large matrix.
> The schematic of operation is as below.
> [image: image.png]
> Is there any function for put small matrix to large matrix at once?
>
> Thanks,
> Hyung Kim