Index: /issm/trunk-jpl/src/m/classes/clusters/generic.m
===================================================================
--- /issm/trunk-jpl/src/m/classes/clusters/generic.m	(revision 20429)
+++ /issm/trunk-jpl/src/m/classes/clusters/generic.m	(revision 20430)
@@ -97,7 +97,7 @@
 					else
 						if IssmConfig('_HAVE_MPI_'),
-							fprintf(fid,'mpiexec -np %i %s/%s %s %s %s 2> %s.errlog >%s.outlog ',cluster.np,cluster.codepath,executable,EnumToString(solution),[cluster.executionpath '/' dirname],modelname,modelname,modelname);
+							fprintf(fid,'mpiexec -np %i %s/%s %s %s %s 2> %s.errlog >%s.outlog &',cluster.np,cluster.codepath,executable,EnumToString(solution),[cluster.executionpath '/' dirname],modelname,modelname,modelname);
 						else
-							fprintf(fid,'%s/%s %s %s %s 2> %s.errlog >%s.outlog ',cluster.codepath,executable,EnumToString(solution),[cluster.executionpath '/' dirname],modelname,modelname,modelname);
+							fprintf(fid,'%s/%s %s %s %s 2> %s.errlog >%s.outlog &',cluster.codepath,executable,EnumToString(solution),[cluster.executionpath '/' dirname],modelname,modelname,modelname);
 						end
 					end