[petsc-dev] MATMPIAIJ

[Barry Smith]

   You are likely prematurely optimizing.  Are you already solving systems using the new solver on "real" problems? Does profiling indicate that the duplicate memory usage or time to copy are limiting the problems you can run?  I highly recommend finishing  and using your solver interface well before worrying about further optimizations.

    Barry

On Sep 24, 2013, at 11:07 AM, Jose David Bermeol <jbermeol at purdue.edu> wrote:

> Hi, I have some questions?
> 
> 1) What is the main reason to split the matrix in each MPI process in diagonal matrix and off diagonal matrix?
> 
> 2) Is this just for MATMPIAIJ matrices?
> 
> 3) Right now we are interested in safe all the memory as possible, so I guess the right path would be to implement a new type of matrix it would be just a container. Is it the best solution??