Add option to silence errors

src/main.cpp

@@ -5,6 +5,7 @@
 // source code
 
 #include <algorithm>
+#include <array>
 #include <chrono>
 #include <cmath>
 #include <cstring>
@@ -29,6 +30,7 @@ unsigned int deviceIndex = 0;
 bool use_float = false;
 bool output_as_csv = false;
 Unit unit = MegaByte;
+bool silence_errors = false;
 string csv_separator = ",";
 
 // Benchmarks:
@@ -308,25 +310,37 @@ void check_solution(const unsigned int ntimes, vector<T>& a, vector<T>& b, vecto
 
   long double epsi = numeric_limits<T>::epsilon() * 100.0;
 
-  if (errA > epsi)
+  bool failed = false;
+  if (errA > epsi) {
+    failed = true;
     cerr
       << "Validation failed on a[]. Average error " << errA
       << endl;
-  if (errB > epsi)
+  }
+  if (errB > epsi) {
+    failed =true;
     cerr
       << "Validation failed on b[]. Average error " << errB
       << endl;
-  if (errC > epsi)
+  }
+  if (errC > epsi) {
+    failed =true;
     cerr
       << "Validation failed on c[]. Average error " << errC
       << endl;
+  }
   // Check sum to 8 decimal places
-  if (selection == Benchmark::All && errSum > 1.0E-8)
+  if (selection == Benchmark::All && errSum > 1.0E-8) {
+    failed = true;
     cerr
       << "Validation failed on sum. Error " << errSum
       << endl << setprecision(15)
       << "Sum was " << sum << " but should be " << goldSum
       << endl;
+  }
+
+  if (failed && !silence_errors)
+    exit(1);
 
 }
 
@@ -446,6 +460,10 @@ void parseArguments(int argc, char *argv[])
     {
       unit = Unit(GigaByte);
     }
+    else if (!string("--silence-errors").compare(argv[i]))
+    {
+      silence_errors = true;
+    }
     else if (!string("--help").compare(argv[i]) ||
              !string("-h").compare(argv[i]))
     {
@@ -465,6 +483,7 @@ void parseArguments(int argc, char *argv[])
       cout << "      --mibibytes          Use MiB=2^20 for bandwidth calculation (default MB=10^6)" << endl;
       cout << "      --gigibytes          Use GiB=2^30 for bandwidth calculation (default MB=10^6)" << endl;
       cout << "      --gigabytes          Use GB=10^9 for bandwidth calculation (default MB=10^6)" << endl;
+      cout << "      --silence-errors     Ignores validation errors." << endl;
       cout << endl;
       exit(EXIT_SUCCESS);
     }