PCISScatterArrayNToVecB

Scatters interface node values from a big array (of all local nodes, interior or interface, including ghosts) into an interface vector, when in SCATTER_FORWARD mode, or vice-versa, when in SCATTER_REVERSE mode.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCISScatterArrayNToVecB(PC pc, PetscScalar *array_N, Vec v_B, InsertMode imode, ScatterMode smode)

Input Parameters

• pc - preconditioner context

• array_N - [when in SCATTER_FORWARD mode] Array to be scattered into the vector otherwise output array

• imode - insert mode, ADD_VALUES or INSERT_VALUES

• smode - scatter mode, SCATTER_FORWARD or SCATTER_REVERSE mode]

• v_B - [when in SCATTER_REVERSE mode] Vector to be scattered into the array, otherwise output vector

Note

The entries in the array that do not correspond to interface nodes remain unaltered.

See Also

KSP: Linear System Solvers, PCBDDC, PCNN, PCISSetUseStiffnessScaling(), PCISSetSubdomainDiagonalScaling(), PCISSetSubdomainScalingFactor(), PCISApplySchur(), PCISApplyInvSchur(), PCISReset(), PCISInitialize(), InsertMode

Level

advanced

Location

src/ksp/pc/impls/is/pcis.c

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