Lines Matching full:coarse

95 . -pc_deflation_reduction_factor <\-1> - reduction factor on bottom level coarse problem for `PCDEF…
98   Default is computed based on the size of the coarse problem.
126   PCDeflationSetCorrectionFactor - Set coarse problem correction factor.
136 + -pc_deflation_correction        <false> - if true apply coarse problem correction
137 - -pc_deflation_correction_factor <1.0>   - sets coarse problem correction factor
140   Any non-zero fact enables the coarse problem correction.
230   the coarse problem (W0'*A*W0)^{-1} is again preconditioned by deflation with
293   PCDeflationSetCoarseMat - Set the coarse problem `Mat`.
299 - mat - coarse problem mat
324   PCDeflationGetCoarseKSP - Returns the coarse problem `KSP`.
332 . ksp - coarse problem `KSP` context
560   /* setup coarse problem */  in PCSetUp_Deflation()
595 …PetscCall(PCSetType(pcinner, PCDEFLATION));    /* TODO create coarse preconditinoner M_c = WtMW ? …  in PCSetUp_Deflation()
729     PetscCall(PetscViewerASCIIPrintf(viewer, "--- Coarse problem solver:\n"));  in PCView_Deflation()
747 …PetscCall(PetscOptionsInt("-pc_deflation_reduction_factor", "Reduction factor for coarse problem s…  in PCSetFromOptions_Deflation()
748 …PetscCall(PetscOptionsBool("-pc_deflation_correction", "Add coarse problem correction Q to P", "PC…  in PCSetFromOptions_Deflation()
749 …nsScalar("-pc_deflation_correction_factor", "Set multiple of Q to use as coarse problem correction…  in PCSetFromOptions_Deflation()
763 …>     - reduction factor on bottom level coarse problem for PCTELESCOPE (default based on the size…
764 .    -pc_deflation_correction         <false> - if true apply coarse problem correction
765 .    -pc_deflation_correction_factor  <1.0>   - sets coarse problem correction factor
777 …to zero while the addition of the coarse problem correction (factor*Q) makes the preconditioner to…
785 …deflation matrix, and the coarse problem (W'*A*W)^{-1} is solved by `KSPFCG` (if A is `MAT_SPD`) o…
791 …The coarse problem `KSP` can be controlled from the command line with prefix -deflation_ for the f…
796 …or -pc_deflation_recduction_factor. The default is chosen heuristically based on the coarse proble…
799 …coarse problem `KSP` apply for [lvl]_ part of prefix), e.g., -deflation_1_pc_pc_type bjacobi. You …
802 …The coarse problem correction term (factor*Q) can be turned on by -pc_deflation_correction and the…
803 …be set by pc_deflation_correction_factor or by `PCDeflationSetCorrectionFactor()`. The coarse prob…
804 …significantly improve convergence when the deflation coarse problem is not solved with high enough…
811     recommend limiting the number of iterations for the coarse problems.