diff --git a/examples/sunlinsol/CMakeLists.txt b/examples/sunlinsol/CMakeLists.txt
index 3628997f36..e36b239234 100644
--- a/examples/sunlinsol/CMakeLists.txt
+++ b/examples/sunlinsol/CMakeLists.txt
@@ -39,6 +39,7 @@ endif()
 target_link_libraries(test_sunlinsol_obj PRIVATE sundials_sunlinsoldense)
 
 if(ENABLE_MPI AND MPI_C_FOUND)
+  add_subdirectory(pcg/parallel)
   add_subdirectory(spgmr/parallel)
   add_subdirectory(spfgmr/parallel)
   add_subdirectory(spbcgs/parallel)
diff --git a/examples/sunlinsol/pcg/parallel/CMakeLists.txt b/examples/sunlinsol/pcg/parallel/CMakeLists.txt
index e6a130c84d..8b298db30e 100644
--- a/examples/sunlinsol/pcg/parallel/CMakeLists.txt
+++ b/examples/sunlinsol/pcg/parallel/CMakeLists.txt
@@ -14,12 +14,21 @@
 # CMakeLists.txt file for sunlinsol PCG examples
 # ---------------------------------------------------------------
 
+# Set tolerance for linear solver test based on Sundials precision
+if(SUNDIALS_PRECISION MATCHES "SINGLE")
+  set(TOL "1e-2")
+elseif(SUNDIALS_PRECISION MATCHES "DOUBLE")
+  set(TOL "1e-10")
+else()
+  set(TOL "1e-13")
+endif()
+
 # Example lists are tuples "name\;args\;nodes\;tasks\;type" where the
 # type is develop for examples excluded from 'make test' in releases
 
 # Examples using the SUNDIALS PCG linear solver
 set(sunlinsol_pcg_examples
-  "test_sunlinsol_pcg_parallel\;100 100 1e-3 0\;1\;4\;"
+  "test_sunlinsol_pcg_parallel\;100 200 ${TOL} 0\;1\;4\;"
   )
 
 # Dependencies for nvector examples
diff --git a/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c b/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c
index 0963050fb7..644079a94d 100644
--- a/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c
+++ b/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c
@@ -103,7 +103,6 @@ int main(int argc, char *argv[])
 {
   int             fails=0;          /* counter for test failures */
   int             passfail=0;       /* overall passfail flag     */
-  int             mpierr;           /* mpi error flag            */
   SUNLinearSolver LS;               /* linear solver object      */
   N_Vector        xhat, x, b;       /* test vectors              */
   UserData        ProbData;         /* problem data structure    */
@@ -158,8 +157,8 @@ int main(int argc, char *argv[])
   if (ProbData.myid == 0) {
     printf("\nPCG linear solver test:\n");
     printf("  nprocs = %i\n", ProbData.nprocs);
-    printf("  local/global problem sizes = %ld/%ld\n", ProbData.Nloc,
-           ProbData.nprocs * ProbData.Nloc, sunctx);
+    printf("  local/global problem sizes = %ld/%ld\n", (long int) ProbData.Nloc,
+           (long int) ProbData.nprocs * ProbData.Nloc);
     printf("  Maximum Krylov subspace dimension = %i\n", maxl);
     printf("  Solver Tolerance = %g\n", tol);
     printf("  timing output flag = %i\n\n", print_timing);
@@ -338,7 +337,7 @@ int main(int argc, char *argv[])
   }
 
   /* check if any other process failed */
-  mpierr = MPI_Allreduce(&passfail, &fails, 1, MPI_INT, MPI_MAX, ProbData.comm);
+  (void) MPI_Allreduce(&passfail, &fails, 1, MPI_INT, MPI_MAX, ProbData.comm);
 
   /* Free solver and vectors */
   SUNLinSolFree(LS);
@@ -489,8 +488,8 @@ static int check_flag(void *flagvalue, const char *funcname, int opt)
  * --------------------------------------------------------------------*/
 int check_vector(N_Vector X, N_Vector Y, realtype tol)
 {
-  int      failure = 0;
-  long int i;
+  int failure = 0;
+  sunindextype i;
   realtype *Xdata, *Ydata, maxerr;
 
   Xdata = N_VGetArrayPointer(X);
diff --git a/scripts/shared b/scripts/shared
index b9a7da6458..28ecda2d92 100755
--- a/scripts/shared
+++ b/scripts/shared
@@ -716,8 +716,8 @@ $tar $tarfile $distrobase/examples/sunlinsol/magmadense/CMakeLists.txt
 $tar $tarfile $distrobase/examples/sunlinsol/onemkldense/CMakeLists.txt
 $tar $tarfile $distrobase/examples/sunlinsol/onemkldense/test_sunlinsol_onemkldense.cpp
 
-#$tar $tarfile $distrobase/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c
-#$tar $tarfile $distrobase/examples/sunlinsol/pcg/parallel/CMakeLists.txt
+$tar $tarfile $distrobase/examples/sunlinsol/pcg/parallel/test_sunlinsol_pcg_parallel.c
+$tar $tarfile $distrobase/examples/sunlinsol/pcg/parallel/CMakeLists.txt
 
 $tar $tarfile $distrobase/examples/sunlinsol/pcg/serial/test_sunlinsol_pcg_serial.c
 $tar $tarfile $distrobase/examples/sunlinsol/pcg/serial/test_fsunlinsol_pcg_mod_serial.f90