message: add warmup run to ir-ilu example
diff: @@ -140,6 +140,9 @@ int main(int argc, char *argv[])
  // Generate preconditioned solver for a specific target system
  auto ilu_gmres = ilu_gmres_factory->generate(A);
  + // Warmup run
  + ilu_gmres->apply(lend(b), clone(x).get());
  +
  // Solve system
  std::chrono::nanoseconds time(0);
  auto tic = std::chrono::high_resolution_clock::now();
  