On Mon, Dec 19, 2011 at 12:21 PM, Modhurita Mitra <modhurita at gmail.com>wrote:
> Hi, > > I have to compute the pseudoinverse of a 324360 X 324360 matrix. Can PETSc > compute the SVD of this matrix without parallelization? If parallelization > is needed, do I need to use SLEPc? > With enough memory, yes. However, I am not sure you want to wait. I am not sure how SLEPc would help here. >From the very very little detail you have given, you would need parallel linear algebra, like Elemental. However, I would start out from a more fundamental viewpoint. Such as replacing "compute the psuedoinverse" with "solve a least-squares problem" if that is indeed the case. Matt > > Thanks, > Modhurita > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111219/3630687d/attachment.htm>
