external solvers - scalapack

[Jose E. Roman]

On 18/12/2008, Nichols A. Romero wrote:

> Barry,
>
> PLAPACK has some dense eigensolvers. The public release version has QR
> (which is probably too slow for us), but a developmental version  
> (available
> by contacting the authors) implements MR^3.
>
> Does petsc have support for PLAPACK QR? If so, would it be possible  
> to put support
> for MR^3?
>
> Nichols A. Romero, Ph.D.
> Argonne Leadership Computing Facility
> Argonne National Laboratory
> Building 360 Room L-146
> 9700 South Cass Avenue
> Argonne, IL 60490
> (630) 252-3441


With SLEPc you can reliably compute up to a few thousand eigenpairs of  
a huge matrix. This is sufficient for most applications. We are  
working for optimizing memory usage in the case that many eigenpairs  
are requested.

Have a look at http://www.grycap.upv.es/slepc and if you need more  
details, contact us at slepc-maint at grycap.upv.es

Jose