BVScatter#

Scatters the columns of a BV to another BV created in a subcommunicator.

Synopsis#

#include "slepcbv.h" 
PetscErrorCode BVScatter(BV Vin,BV Vout,VecScatter scat,Vec xdup)

Collective

Input Parameters#

  • Vin - input basis vectors (defined on the whole communicator)

  • scat - VecScatter object that contains the info for the communication

  • xdup - an auxiliary vector

Output Parameter#

  • Vout - output basis vectors (defined on the subcommunicator)

Notes#

Currently implemented as a loop for each the active column, where each column is scattered independently. The vector xdup is defined on the contiguous parent communicator and have enough space to store one duplicate of the original vector per each subcommunicator.

See Also#

BVGetColumn()

Level#

developer

Location#

src/sys/classes/bv/interface/bvcontour.c

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