EPSPRIMMESetBlockSize#
The maximum block size that PRIMME will try to use.
Synopsis#
#include "slepceps.h"
PetscErrorCode EPSPRIMMESetBlockSize(EPS eps,PetscInt bs)
Logically Collective
Input Parameters#
eps - the eigenproblem solver context
bs - block size
Options Database Key#
-eps_primme_blocksize - Sets the max allowed block size value
Notes#
If the block size is not set, the value established by primme_initialize is used.
The user should set the block size based on the architecture specifics of the target computer, as well as any a priori knowledge of multiplicities. The code does NOT require bs > 1 to find multiple eigenvalues. For some methods, keeping bs = 1 yields the best overall performance.
See Also#
EPSPRIMMEGetBlockSize()
Level#
advanced
Location#
Implementations#
EPSPRIMMESetBlockSize_PRIMME() in src/eps/impls/external/primme/primme.c
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