[petsc-users] Numbering in MatView

[TAY wee-beng]

Hi,

When I use MatView to output to an ASCII file, it gives:

Mat Object: 2 MPI processes
   type: mpiaij
row 0: (0, 1)  (1, 0)  (2, 0)  (3, 0)  (4, 0)  (5, 0)  (6, 0)  (7, 0)  
(8, 0)  (12, -1)  (13, 0)  (14, 0)  (24, 0)  (25, 0)  (26, 0) (96, 0)  
(97, 0)  (98, 0)  (192, 0)  (193, 0)  (194, 0)
row 1: (0, 0)  (1, 13.4413)  (2, 0)  (3, 0)  (4, -0.00187601)  (5, 0)  
(6, 0)  (7, 0)  (8, 0)  (12, 0)  (13, -0.000154087)  (14, 0) (24, 0)  
(25, 0)  (26, 0)  (96, 0)  (97, -1.81928e-05)  (98, 0) (192, 0)  (193, 
0)  (194, 0)
row 2: (0, 0)  (1, 0)  (2, 1)  (3, 0)  (4, 0...

So how is the row numbered?

Does it uses the natural ordering or the PETSc ordering?

It seems to be the natural ordering since it doesn't change when I use 
1,2 or 4 cpus, is that so?

-- 
Thank you

Yours sincerely,

TAY wee-beng