Create the CombBLAS::SpParMat with the MPI_Comm from the input 'gridinfo_t'.
This prevents a warning/error from CombBLAS about using MPI_COMM_WORLD.

--- a/SRC/dHWPM_CombBLAS.hpp
+++ b/SRC/dHWPM_CombBLAS.hpp
@@ -52,7 +52,7 @@
     {
         printf("AWPM only supports square process grid. Retuning without a permutation.\n");
     }
-    combblas::SpParMat < int_t, double, combblas::SpDCCols<int_t,double> > Adcsc;
+    combblas::SpParMat < int_t, double, combblas::SpDCCols<int_t,double> > Adcsc(grid->comm);
     std::vector< std::vector < std::tuple<int_t,int_t,double> > > data(procs);
     
     /* ------------------------------------------------------------
--- a/SRC/zHWPM_CombBLAS.hpp
+++ b/SRC/zHWPM_CombBLAS.hpp
@@ -52,7 +52,7 @@
     {
         printf("AWPM only supports square process grid. Retuning without a permutation.\n");
     }
-    combblas::SpParMat < int_t, double, combblas::SpDCCols<int_t,double> > Adcsc;
+    combblas::SpParMat < int_t, double, combblas::SpDCCols<int_t,double> > Adcsc(grid->comm);
     std::vector< std::vector < std::tuple<int_t,int_t,double> > > data(procs);
     
     /* ------------------------------------------------------------
30e1d4a53fc2075abfcfe'>refs</a><a class='active' href='/guix/log/gnu/packages/patches/rct-add-missing-headers.patch'>log</a><a href='/guix/tree/gnu/packages/patches/rct-add-missing-headers.patch?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>tree</a><a href='/guix/commit/gnu/packages/patches/rct-add-missing-headers.patch?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>commit</a><a href='/guix/diff/gnu/packages/patches/rct-add-missing-headers.patch?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/patches/rct-add-missing-headers.patch'>
<input type='hidden' name='id' value='e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>root</a>/<a href='/guix/log/gnu?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>gnu</a>/<a href='/guix/log/gnu/packages?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>patches</a>/<a href='/guix/log/gnu/packages/patches/rct-add-missing-headers.patch?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe'>rct-add-missing-headers.patch</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/patches/rct-add-missing-headers.patch?id=e45f9b4b1251df1a51a30e1d4a53fc2075abfcfe&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>