PCSPAI#
Use the Sparse Approximate Inverse method [GH97]
Options Database Keys#
-pc_spai_epsilon
- set tolerance-pc_spai_nbstep
- set nbsteps-pc_spai_max
- set max-pc_spai_max_new
- set maxnew-pc_spai_block_size
- set block size-pc_spai_cache_size
- set cache size-pc_spai_sp
- set sp-pc_spai_set_verbose <true,false> - verbose output
Note#
This only works with MATAIJ matrices.
References#
M. J. Grote and T. Huckle. Parallel preconditioning with sparse approximate inverses. SIAM J. of Scient. Comput., 18:838–853, 1997.
See Also#
KSP: Linear System Solvers, PCCreate(), PCSetType(), PCType, PC,
PCSPAISetEpsilon(), PCSPAISetMax(), PCSPAISetMaxNew(), PCSPAISetBlockSize(),
PCSPAISetVerbose(), PCSPAISetSp(), PCSPAISetNBSteps(), PCSPAISetCacheSize()
Level#
beginner
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages