I get this error trying to build petsc-dev with cusp:<br><br>petsc-dev/include/../src/vec/vec/utils/vpscat.h(41): error: identifier &quot;n&quot; is undefined<br>    if (!n || ((xin-&gt;map-&gt;n &gt; 10000) &amp;&amp; (sstarts[nsends]*bs &lt; 0.05*xin-&gt;map-&gt;n) &amp;&amp; (xin-&gt;valid_GPU_array == PETSC_CUSP_GPU) &amp;&amp; !(to-&gt;local.n))) {<br>

         ^<br><br>Thanks,<br>John<br><br>