message: Add random seed option in ex11p.
diff: @@ -59,6 +59,7 @@ int main(int argc, char *argv[])
  int par_ref_levels = 1;
  int order = 1;
  int nev = 5;
  + int seed = 75;
  bool slu_solver = false;
  bool visualization = 1;
  @@ -74,6 +75,8 @@ int main(int argc, char *argv[])
  " isoparametric space.");
  args.AddOption(&nev, "-n", "--num-eigs",
  "Number of desired eigenmodes.");
  + args.AddOption(&seed, "-s", "--seed",
  + "Random seed used to initialize LOBPCG.");
  #ifdef MFEM_USE_SUPERLU
  args.AddOption(&slu_solver, "-slu", "--superlu", "-no-slu",
  "--no-superlu", "Use the SuperLU Solver.");
  @@ -217,6 +220,7 @@ int main(int argc, char *argv[])
  HypreLOBPCG * lobpcg = new HypreLOBPCG(MPI_COMM_WORLD);
  lobpcg->SetNumModes(nev);
  + lobpcg->SetRandomSeed(seed);
  lobpcg->SetPreconditioner(*precond);
  lobpcg->SetMaxIter(200);
  lobpcg->SetTol(1e-8);
  