Matrix reuse

Lisandro Dalcin dalcinl at gmail.com
Thu Nov 22 12:22:24 CST 2007


On 11/22/07, Zhifeng Sheng <z.sheng at ewi.tudelft.nl> wrote:
> In my application, I have small matrices that are created and destroied,
> those matrices are of the same nozero pattern.
> I wonder if there is a way to reuse that matrices instead of destroy
> them every time.

Just do not destroy them! Use the matrices, and then start again your
loop with MatSetValues(), calling MatAssemblyBegin() and
MatAssemblyEnd() after the loop.


-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
PTLC - Güemes 3450, (3000) Santa Fe, Argentina
Tel/Fax: +54-(0)342-451.1594




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