Create space (sequence of Vecs) and Use setInitialSpace when computing SVD

[Yunlong He]

Hello,

I want to reuse the Krylov spaces when computing SVDs for a sequence of target k's. Is there a example showing how to generate a sequence of Vecs in slepc4py? I know you can use VecDuplicateVecs in PETSc and then copy the right singular vectors one by one. But it is confusing how to do this in slepc4py. Thanks a lot!

Regards, Yunlong

[Jose E. Roman]

You can try this:

V = [ ]
V.append(v1)
V.append(v2)
S.setInitialSpace(V)