Lines Matching refs:PCGAMG

713 multiple multigrid solvers/preconditioners including `PCMG`, `PCGAMG`, `PCHYPRE`,
749      - ``PCGAMG``
1076 PETSc has a native algebraic multigrid preconditioner `PCGAMG` –
1086 construction. `PCGAMG` is designed from the beginning to be modular, to
1090 (`-pc_type gamg -pc_gamg_type agg` or `PCSetType(pc,PCGAMG)` and
1094 {cite}`isaacstadlerghattas2015` supports 2D coarsenings extruded in the third dimension. `PCGAMG` d…
1169 `PCGAMG` provides unsmoothed aggregation (`-pc_gamg_agg_nsmooths 0`) and
1234 code using `PCGAMG` with `-help` to get a full listing of GAMG
1251 The parallel MIS algorithms require symmetric weights/matrices. Thus `PCGAMG`
1281 **Troubleshooting algebraic multigrid methods:** If `PCGAMG`, *ML*, *AMGx* or
1329 One can run with `-info :pc` and grep for `PCGAMG` to get statistics on
1355 for `PCGAMG` to get these estimates or use `-ksp_view`. These highest
1797 such as `PCGAMG`, `PCML`, and `PCHYPRE` which internally determine the number of levels