> On Dec 3, 2014, at 5:13 PM, Andrew Spott <[email protected]> wrote:
>
> What is the easiest way to change the block size of a matrix?
>
> I have a matrix that was saved with a block size of 1, and I would like to
> increase it upon load to a larger block size. Is there a simple way of doing
> this?
Yes, declare it as a BAIJ before calling MatLoad() for example
Mat A;
MatCreate(comm,&A);
MatSetType(A,MATBAIJ);
MatLoad(A,viewer);
and pass the command line option -matload_block_size 2
In the development version of PETSc you can skip the command line option
and instead use
MatSetBlockSize(A,2); before the call to MatLoad(). There was a bug in
the release version of PETSc that prevented this from previously working.
Barry
>
> Thanks
>
> -Andrew Spott
>
