PETSc on GPUs

[Ahmed El Zein]

Harald,
I am working on implementing SpMV on a NVIDIA GPU with CUDA for SML
applications (just about finished actually).

As the SML application I am planing to base my work on uses PETSc, I
have written some functions that will convert AIJ matrices and Vectors
to SP and copy them to the GPU, multiply them and copy them back to the
host. I would be happy to share them with you if you want.

While this would be outside the scope of my MPhil I would be very
interested in helping to add GPU support for PETSC. I have not yet had
any experience with CTM for programming ATI GPUs but I believe there
would not be a huge difference.

I have access to a GeForce 8800GTX GPU (single precession only) at the
ANU. I have been talking with my supervisor about getting a GTX280 or
GTX 260 (supports double precision) but I don't know if we will be
getting one.
 
Anyway I would like to help. So if anyone would like to start thinking
how this would be best implemented, I am available. :)

Ahmed

On Wed, 2008-09-17 at 08:24 -0700, Harald Pfeiffer wrote:
> Hi,
> 
> do you know whether there are any efforts to run PETSc on GPUs 
> (graphical processing units)?
> 
> Thanks,
> Harald
> 
> 
>