[petsc-users] EPSSolve finds eigensolutions in deflation space

Giacomo Mulas giacomo.mulas84 at gmail.com
Sun May 8 11:47:32 CDT 2016

On Sun, 8 May 2016, Jose E. Roman wrote:

> The custom function for stopping based on a user-defined criterion will be
> available in slepc-3.7, to be released in a few days.  You can already try
> this functionality in the master branch of the development repo.  Hope it
> fits your needs.

That's great news, I'll definitely give it a try!  If I can use it for my
needs, it would also sidestep the deflation space issue, since I only use it
to exclude already found eigenstates in subsequent calls of EPSSolve till I
get enough.  If I can get all the eigenstates I need, and (close to) no more
than those I need, in one single EPSSolve call, I will not need to define
the deflation space at all anymore.

> Regarding the deflation space issue, I will try your example and get back
> to you soon.

thanks! Of course, if useful, I am more than willing to help with it. Let me



Giacomo Mulas <gmulas at oa-cagliari.inaf.it>

INAF - Osservatorio Astronomico di Cagliari
via della scienza 5 - 09047 Selargius (CA)

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