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/AWPM_CombBLAS.hpp
+++ b/SRC/AWPM_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);
     
     /* ------------------------------------------------------------
@@ -100,11 +100,10 @@
     combblas::AWPM(Adcsc, mateRow2Col, mateCol2Row,true);
     
     // now gather the matching vector
-    MPI_Comm World = mateRow2Col.getcommgrid()->GetWorld();
     int * rdispls = new int[procs];
     int sendcnt = mateRow2Col.LocArrSize();
     int * recvcnt = new int[procs];
-    MPI_Allgather(&sendcnt, 1, MPI_INT, recvcnt, 1, MPI_INT, World);
+    MPI_Allgather(&sendcnt, 1, MPI_INT, recvcnt, 1, MPI_INT, grid->comm);
     rdispls[0] = 0;
     for(int i=0; i<procs-1; ++i)
     {
@@ -112,7 +111,7 @@
     }
     int_t *senddata = (int_t *)mateRow2Col.GetLocArr();
     
-    MPI_Allgatherv(senddata, sendcnt, combblas::MPIType<int_t>(), ScalePermstruct->perm_r, recvcnt, rdispls, combblas::MPIType<int_t>(), World);
+    MPI_Allgatherv(senddata, sendcnt, combblas::MPIType<int_t>(), ScalePermstruct->perm_r, recvcnt, rdispls, combblas::MPIType<int_t>(), grid->comm);
     
     delete[] rdispls;
     delete[] recvcnt;
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</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=478880c4a95730e1b024e13602de6094e6b70f2f'>root</a>/<a href='/guix/log/bootstrap?id=478880c4a95730e1b024e13602de6094e6b70f2f'>bootstrap</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/bootstrap?id=478880c4a95730e1b024e13602de6094e6b70f2f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-09-18 11:38:14 +0200'>2019-09-18</span></td><td><a href='/guix/commit/bootstrap?id=7bc46ecc34ceb042ff890e5d306d0a2a736e891d'>doc: Add Guix Cookbook.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .gitignore: Update ignore list.
* Makefile.am (assert-no-store-file-names): Exclude the cookbook.
* bootstrap: Generate po files for cookbook translations.
* doc/guix-cookbook.texi: New file.
* doc/local.mk (info_TEXINFOS): Add it; add a rule to build cookbook
translations.
* po/doc/local.mk (DOC_COOKBOOK_PO_FILES): New variable.
(EXTRA_DIST): Add cookbook pot file and po files.
(doc-po-update-cookbook-%): New target.
(doc-pot-update): Also update cookbook pot file.
(doc-po-update): Also update cookbook po files.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2019-04-26 11:21:32 +0200'>2019-04-26</span></td><td><a href='/guix/commit/bootstrap?id=9ca5ff882e2ac4eaab02eb0fde545bd784af478b'>bootstrap: Break automake dependency on generated files.</a><span class='msg-avail'>...<span class='msg-tooltip'>* bootstrap: Generate stub files for the manual translations whose
generated files are not included in the VCS.
* doc/contributing.de.texi: Remove file.
* doc/contributing.es.texi: Remove file.
* doc/contributing.fr.texi: Remove file.
* doc/contributing.zh_CN.texi: Remove file.
* doc/guix.de.texi: Remove file.
* doc/guix.es.texi: Remove file.
* doc/guix.fr.texi: Remove file.
* doc/guix.zh_CN.texi: Remove file.
* .gitignore: Add them.

Signed-off-by: Julien Lepiller &lt;julien@lepiller.eu&gt;
</span></span></td><td>Miguel Ángel Arruga Vivas</td></tr>