[petsc-users] Matrix stored on many machines, filled by one process

Matthew Knepley knepley at gmail.com
Wed May 18 16:05:59 CDT 2011

On Wed, May 18, 2011 at 3:54 PM, Bartłomiej W <bartlomiej.wach at yahoo.pl>wrote:

> Hello again,
> I am wondering if it is possibile to have a matrix be stored across several
> machines but have only one process to set its values? Can I just create the
> matrix and then simply setownership range for process 0 to full size of the
> matrix and zero for others?

You can create a parallel matrix, and then only set values from 1 process.
Its not efficient, but it will work.


> Thank You for an answer.

What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
-- Norbert Wiener
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