[Trilinos-Users] ANASAZI help

[Heroux, Michael A]

Azedine,

There is no interface to pass the entire collection of terms at once.   The minimal number of insertion calls for Epetra_CrsMatrix is the number of rows in the matrix.   You can of course make your own simple matrix adapter.  This adapter could simply use your existing arrays if you like.

If you start with Epetra_BasicRowMatrix ( a virtual class with most methods concretely adapted ) it is not too much work to make your own matrix class.  You can look at Epetra_JadMatrix as an example of how to do this.

Mike


On 6/24/11 7:37 AM, "Azedine Ouaissa" <ouaissa at iatmbh.de> wrote:

Hallo,
I will use Anasazi to calculate Eigen values
My Matrix is 190000x190000. My matrix is in the compressed row-Format.

This example illustrate my matrix

 A [  2  -1   0   0
     -1   2  -1   0
      0  -1   2  -1
      1   0  -1   2]

   Val      [2, -1, -1,  2, -1, -1,  2, -1,  1, -1, 2]
   Row      [0,  1,  3,  0,  1,  2,  1,  2,  1,  2, 3]
   colIndex [0,  3,  6,  9, 11]

Is it possible to create in EPETRA one Matrix and fill this matrix complete in one step?

Do you have one example for me?



thank you for your help

Mit freundlichen Grüßen
Azedine Ouaissa



Mit freundlichen Grüßen
Azedine Ouaissa
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