on at source: previous cols plus 1</span>
        cnnz%i1 = <span style="color: #a020f0;">sum</span>(m1%numcols(1:(c%i1-1))) + 1
        <span style="color: #b22222;">! </span><span style="color: #b22222;">Number of items transmitted: total number of cols</span>
        cnnz%nitems = <span style="color: #a020f0;">sum</span>(m1%numcols(c%i1 : c%i1 + c%nitems -1))
     <span style="color: #a020f0;">endif</span>
     <span style="color: #a020f0;">if</span> (myrank2 == c%dst) <span style="color: #a020f0;">then<