[petsc-users] To store the matrix.

[Xuefei (Rebecca) Yuan]

Hi Jed,

I need to have this form for the simple input for PDSLin.

What do you mean by "COO"?

Any examples to show how to pull that new array for reading from the AIJ structure?

Thanks a lot!

R

On Jul 14, 2011, at 11:28 AM, Jed Brown wrote:

> On Thu, Jul 14, 2011 at 13:18, Xuefei (Rebecca) Yuan <xyuan at lbl.gov> wrote:
> I would like to store this sparse MXN matrix A in the following form:
> ....................................................
> 
> line1:  M       N       numberofnonzeros
> line2:  i       j       value
> line3:  i       j       value
> 
> This "COO" format is not an efficient representation. Why do you want to store it this way?
> 
> (You can produce this by getting the AIJ structure, allocating a new array for the row indices, and filling it redundantly from the AIJ structure.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110714/3620d2e8/attachment.htm>