On Sat, May 16, 2015 at 3:49 AM, venkatesh g <[email protected]> wrote:
> Hi, > > I am trying to solving AX=lambda BX > > A and B are of size 57000 x 57000 > > Currently I solve my small matrices using -st_type sinvert and -eps_nev 1 > > So I get 1 eigenvalue and eigenvector. > > So for the 57000x57000 large matrix problem, the unknown eigenvector is > 57000x1 > > Should I configure the petsc as '--with-64-bit-indices=1' for this problem > ? > It is not necessary. Matt > Is the unknowns being considered as the entire eigenspace 57000x57000 ? > > kindly let me know. > > Venkatesh > -- 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
