Creates a "process" unassmembled matrix, it is assembled on each process but not across processes.


#include "petscmat.h" 
PetscErrorCode PETSCMAT_DLLEXPORT MatCreateIS(MPI_Comm comm,PetscInt m,PetscInt n,PetscInt M,PetscInt N,ISLocalToGlobalMapping map,Mat *A)

Input Parameters

comm - MPI communicator that will share the matrix
m,n,M,N - local and/or global sizes of the the left and right vector used in matrix vector products
map - mapping that defines the global number for each local number

Output Parameter

A -the resulting matrix

Notes: See MATIS for more details m and n are NOT related to the size of the map

See Also

MATIS, MatSetLocalToGlobalMapping()

Index of all Mat routines
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Index of all manual pages