[petsc-users] MatDenseGetArray question

[Satish Balay]

On Wed, 17 Apr 2013, Michael Povolotskyi wrote:

> On 04/17/2013 01:37 PM, Matthew Knepley wrote:
> > On Wed, Apr 17, 2013 at 1:23 PM, Michael Povolotskyi <mpovolot at purdue.edu
> > <mailto:mpovolot at purdue.edu>> wrote:
> > 
> >     Dear Petsc developers,
> >     does the function MatDenseGetArray allocate additional memory or
> >     just returns a pointer to existing memory ?
> > 
> > 
> > Returns a pointer.
> > 
> >   Matt
> Thank you, one more detail about MatDenseGetArray
> is this statement correct:
> if a dense matrix is serial, the data is stored in memory in a column-wise
> order, but if a dense matrix is distributed the data is stored in a row-wise
> order?

nope - the rows are distributed across procs - but within the processor - the
data is stored column-wise

Satish