petsc-3.7.1 2016-05-15
Report Typos and Errors

# KSPGROPPCG

A pipelined conjugate gradient method from Bill Gropp This method has two reductions, one of which is overlapped with the matrix-vector product and one of which is Many broverlapped with the preconditioner. Many br

See also KSPPIPECG, which has only a single reduction that overlaps both the matrix-vector product and the preconditioner. Many br

Many br

### Notes

MPI configuration may be necessary for reductions to make asynchronous progress, which is important for performance of pipelined methods. Many brSee the FAQ on the PETSc website for details. Many br

### Contributed by

Pieter Ghysels, Universiteit Antwerpen, Intel Exascience lab Flanders Many br

### Reference

http://www.cs.uiuc.edu/~wgropp/bib/talks/tdata/2012/icerm.pdf Many br

### See Also

KSPCreate(), KSPSetType(), KSPPIPECG, KSPPIPECR, KSPPGMRES, KSPCG, KSPCGUseSingleReduction()

Level:intermediate
Location:src/ksp/ksp/impls/cg/groppcg/groppcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages