Level-0 Access

• Each process makes one independent read request for each row in the local array (as in Unix)

MPI_File_open(..., file, ..., &fh)

for (i=0; i<n_local_rows; i++) {

MPI_File_seek(fh, ...);

MPI_File_read(fh, &(A[i][0]), ...);

}

MPI_File_close(&fh);

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