[petsc-users] Customizeing MatSetValuesBlocked(...)

[Jed Brown]

On Wed, Aug 8, 2012 at 12:47 PM, Jinquan Zhong <jzhong at scsolutions.com>wrote:

> Are you referring to preallocating memory for the size of A before
> MatSetValues(A, ...)?  I didn't do that.


This is very important.

http://www.mcs.anl.gov/petsc/documentation/faq.html#efficient-assembly


With petsc-dev, it is best to use MATELEMENTAL for dense matrices.

What are you trying to do with this dense martix?
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