Index: /issm/trunk-jpl/externalpackages/petsc/install-3.7-aci.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/petsc/install-3.7-aci.sh	(revision 21814)
+++ /issm/trunk-jpl/externalpackages/petsc/install-3.7-aci.sh	(revision 21815)
@@ -44,5 +44,6 @@
 
 export PATH="$PATH:." 
-mpiexec -np 1 ./conftest-arch-linux2-c-opt
+cd $ISSM_DIR/externalpackages/petsc/src
+mpirun -np 1 ./conftest-arch-linux2-c-opt
 EOF