On Tue, 21 Feb 2012, recrusader wrote:

> For the last question, since I need to use one GPU card, that means
> I need to use the matrix with SEQAIJ type.  To my understanding, if
> I use more than 2 CPU cores in MPI parallel, the matrix type will
> become MPIAIJ.

Ah, I understand now; thanks.  I've never used the PETSc GPU features
and am unfamiliar with the current limitations, but "you need as many
GPUs as MPI ranks" certainly makes sense.
---
Roy

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