From e7fa62c5cdd19ffab17da5169d4f3781d3872c41 Mon Sep 17 00:00:00 2001
From: David Wells <drwells@email.unc.edu>
Date: Fri, 21 May 2021 12:21:49 -0400
Subject: [PATCH] step-78: Make output a lot quieter.

We don't want to print thousands of lines.
---
 examples/step-78/step-78.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/examples/step-78/step-78.cc b/examples/step-78/step-78.cc
index bb2cd42b49..e56a6ab22b 100644
--- a/examples/step-78/step-78.cc
+++ b/examples/step-78/step-78.cc
@@ -533,8 +533,6 @@ namespace BlackScholesSolver
     preconditioner.initialize(system_matrix, 1.0);
     cg.solve(system_matrix, solution, system_rhs, preconditioner);
     constraints.distribute(solution);
-    std::cout << "     " << solver_control.last_step() << " CG iterations."
-              << std::endl;
   }
 
   // @sect4{<code>BlackScholes::add_results_for_output</code>}
@@ -751,8 +749,10 @@ namespace BlackScholesSolver
           {
             time += time_step;
             ++timestep_number;
-            std::cout << "Time step " << timestep_number << " at t=" << time
-                      << std::endl;
+
+            if (timestep_number % 1000 == 0)
+              std::cout << "Time step " << timestep_number << " at t=" << time
+                        << std::endl;
 
             mass_matrix.vmult(system_rhs, solution);
 
-- 
2.39.5