[petsc-users] In place access to eigenvectors of EPS

Jose E. Roman jroman at dsic.upv.es
Sat Mar 28 19:03:26 CDT 2015

El 28/03/2015, a las 21:24, Andrew Spott escribió:

> Is there a way to get in place access to the eigenvectors in the BV contained by EPS using the public API?
> -Andrew

You can do EPSGetBV() and then BVGetColumn() for each of the first nconv columns. But this has risks, for instance the BV may contain Schur vectors instead of eigenvectors, or separated real and imaginary parts in case of complex eigenvectors in real arithmetic, an possibly other solver-dependent issues.

What is the use case for this?

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