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