EPSGDSetBlockSize#

Sets the number of vectors to be added to the searching space in every iteration.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSGDSetBlockSize(EPS eps,PetscInt blocksize)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • blocksize - number of vectors added to the search space in every iteration

Options Database Key#

  • -eps_gd_blocksize <blocksize> - number of vectors added to the search space in every iteration

Note#

Detailed information can be found at [Romero and Roman, 2014].

References#

[Rom14]

E. Romero and J. E. Roman. A parallel implementation of Davidson methods for large-scale eigenvalue problems in SLEPc. ACM Trans. Math. Software, 40(2):13:1–13:29, 2014. doi:10.1145/2543696.

See Also#

EPS: Eigenvalue Problem Solver, EPSGD, EPSGDSetKrylovStart()

Level#

advanced

Location#

src/eps/impls/davidson/gd/gd.c

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