PCH2OPUS#
“h2opus” - A preconditioner type for, MATH2OPUS, hierarchical matrices using the H2Opus package.
Options Database Keys#
- -pc_type h2opus - pc type to “h2opus” during a call to - PCSetFromOptions()
- -pc_h2opus_maxits - maximum number of iterations for Newton-Schultz 
- -pc_h2opus_monitor - monitor Newton-Schultz convergence 
- -pc_h2opus_atol - absolute tolerance 
- -pc_h2opus_rtol - relative tolerance 
- -pc_h2opus_norm_type - normtype 
- -pc_h2opus_hyperorder - Hyper power order of sampling 
- -pc_h2opus_leafsize - leaf size when constructed from kernel 
- -pc_h2opus_eta - admissibility condition tolerance 
- -pc_h2opus_maxrank - maximum rank when constructed from matvecs 
- -pc_h2opus_samples - number of samples to be taken concurrently when constructing from matvecs 
- -pc_h2opus_mrtol - relative tolerance for construction from sampling 
- -pc_h2opus_forcecpu - force construction of preconditioner on CPU 
See Also#
KSP: Linear System Solvers, MATH2OPUS, MATHTOOL, MATDENSE, MatCreateH2OpusFromKernel(), MatCreateH2OpusFromMat()
Level#
intermediate
Location#
Examples#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages