Waad Subber w_subber at
Tue May 20 14:12:20 CDT 2008


I am trying to construct a sparse parallel matrix (MPIAIJ) by adding up sparse sequential matrices (SeqAIJ) from each CPU. I am using 

MatMerge_SeqsToMPI(MPI_Comm comm,Mat seqmat,PetscInt m,PetscInt n,MatReuse scall,Mat *mpimat) 

to do that. However, when I compile the code I get the following 

 undefined reference to `matmerge_seqstompi_'
collect2: ld returned 1 exit status
make: *** [all] Error 1

Am I using this function correctly ?



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