Support CSV output for triad only running mode

Fixes #54

CHANGELOG.md

@@ -6,7 +6,8 @@ All notable changes to this project will be documented in this file.
 ### Added
 - OpenACC flags to build for Volta.
 - Kokkos list CLI argument shows some information about which device will be used.
-- OpenMP GNU compiler now uses native target flag
+- OpenMP GNU compiler now uses native target flag.
+- Support CSV output for Triad only running mode.
 
 ### Changed
 - Update SYCL implementation to SYCL 1.2.1 interface.

main.cpp

@@ -286,6 +286,9 @@ void run()
 template <typename T>
 void run_triad()
 {
+
+  if (!output_as_csv)
+  {
     std::cout << "Running triad " << num_times << " times" << std::endl;
     std::cout << "Number of elements: " << ARRAY_SIZE << std::endl;
 
@@ -294,10 +297,6 @@ void run_triad()
     else
       std::cout << "Precision: double" << std::endl;
 
-  // Create host vectors
-  std::vector<T> a(ARRAY_SIZE);
-  std::vector<T> b(ARRAY_SIZE);
-  std::vector<T> c(ARRAY_SIZE);
     std::streamsize ss = std::cout.precision();
     std::cout << std::setprecision(1) << std::fixed
       << "Array size: " << ARRAY_SIZE*sizeof(T)*1.0E-3 << " KB"
@@ -305,6 +304,12 @@ void run_triad()
     std::cout << "Total size: " << 3.0*ARRAY_SIZE*sizeof(T)*1.0E-3 << " KB"
       << " (=" << 3.0*ARRAY_SIZE*sizeof(T)*1.0E-6 << " MB)" << std::endl;
     std::cout.precision(ss);
+  }
+
+  // Create host vectors
+  std::vector<T> a(ARRAY_SIZE);
+  std::vector<T> b(ARRAY_SIZE);
+  std::vector<T> c(ARRAY_SIZE);
 
   Stream<T> *stream;
 
@@ -365,6 +370,27 @@ void run_triad()
   // Display timing results
   double total_bytes = 3 * sizeof(T) * ARRAY_SIZE * num_times;
   double bandwidth = 1.0E-9 * (total_bytes / runtime);
+  if (output_as_csv)
+  {
+    std::cout
+      << "function" << csv_separator
+      << "num_times" << csv_separator
+      << "n_elements" << csv_separator
+      << "sizeof" << csv_separator
+      << "gbytes_per_sec" << csv_separator
+      << "runtime"
+      << std::endl;
+    std::cout
+      << "Triad" << csv_separator
+      << num_times << csv_separator
+      << ARRAY_SIZE << csv_separator
+      << sizeof(T) << csv_separator
+      << bandwidth << csv_separator
+      << runtime
+      << std::endl;
+  }
+  else
+  {
     std::cout
       << "--------------------------------"
       << std::endl << std::fixed
@@ -372,6 +398,7 @@ void run_triad()
       << runtime << std::endl
       << "Bandwidth (GB/s):  " << std::left << std::setprecision(3)
       << bandwidth << std::endl;
+  }
 
   delete stream;
 }