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diff --git a/src/tuning/kernels/xaxpy.cc b/src/tuning/kernels/xaxpy.cc
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+++ b/src/tuning/kernels/xaxpy.cc
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+
+// =================================================================================================
+// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
+// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
+// width of 100 characters per line.
+//
+// Author(s):
+//   Cedric Nugteren <www.cedricnugteren.nl>
+//
+// This file uses the CLTune auto-tuner to tune the xaxpy OpenCL kernels.
+//
+// =================================================================================================
+
+#include <string>
+#include <vector>
+
+#include "utilities.hpp"
+#include "tuning/tuning.hpp"
+
+namespace clblast {
+// =================================================================================================
+
+// See comment at top of file for a description of the class
+template <typename T>
+class TuneXaxpy {
+ public:
+
+  // The representative kernel and the source code
+  static std::string KernelFamily() { return "xaxpy"; }
+  static std::string KernelName() { return "XaxpyFast"; }
+  static std::string GetSources() {
+    return
+      #include "../src/kernels/common.opencl"
+      #include "../src/kernels/level1/level1.opencl"
+      #include "../src/kernels/level1/xaxpy.opencl"
+    ;
+  }
+
+  // The list of arguments relevant for this routine
+  static std::vector<std::string> GetOptions() { return {kArgN, kArgAlpha}; }
+
+  // Tests for valid arguments
+  static void TestValidArguments(const Arguments<T> &args) {
+    if (!IsMultiple(args.n, 64)) {
+      throw std::runtime_error("'XaxpyFast' requires 'n' to be a multiple of WGS*WPT*VW");
+    }
+  }
+
+  // Sets the default values for the arguments
+  static size_t DefaultM() { return 1; } // N/A for this kernel
+  static size_t DefaultN() { return 4096*1024; }
+  static size_t DefaultK() { return 1; } // N/A for this kernel
+  static double DefaultFraction() { return 1.0; } // N/A for this kernel
+
+  // Describes how to obtain the sizes of the buffers
+  static size_t GetSizeX(const Arguments<T> &args) { return args.n; }
+  static size_t GetSizeY(const Arguments<T> &args) { return args.n; }
+  static size_t GetSizeA(const Arguments<T> &) { return 1; } // N/A for this kernel
+  static size_t GetSizeB(const Arguments<T> &) { return 1; } // N/A for this kernel
+  static size_t GetSizeC(const Arguments<T> &) { return 1; } // N/A for this kernel
+  static size_t GetSizeTemp(const Arguments<T> &) { return 1; } // N/A for this kernel
+
+  // Sets the tuning parameters and their possible values
+  static void SetParameters(cltune::Tuner &tuner, const size_t id) {
+    tuner.AddParameter(id, "WGS", {64, 128, 256, 512, 1024, 2048});
+    tuner.AddParameter(id, "WPT", {1, 2, 4, 8});
+    tuner.AddParameter(id, "VW", {1, 2, 4, 8});
+  }
+
+  // Sets the constraints and local memory size
+  static void SetConstraints(cltune::Tuner &, const size_t) { }
+  static void SetLocalMemorySize(cltune::Tuner &, const size_t, const Arguments<T> &) { }
+
+  // Sets the base thread configuration
+  static std::vector<size_t> GlobalSize(const Arguments<T> &args) { return {args.n}; }
+  static std::vector<size_t> GlobalSizeRef(const Arguments<T> &args) { return GlobalSize(args); }
+  static std::vector<size_t> LocalSize() { return {1}; }
+  static std::vector<size_t> LocalSizeRef() { return {64}; }
+
+  // Transforms the thread configuration based on the parameters
+  using TransformVector = std::vector<std::vector<std::string>>;
+  static TransformVector MulLocal() { return {{"WGS"}}; }
+  static TransformVector DivLocal() { return {}; }
+  static TransformVector MulGlobal() { return {}; }
+  static TransformVector DivGlobal() { return {{"WPT"},{"VW"}}; }
+
+  // Sets the kernel's arguments
+  static void SetArguments(cltune::Tuner &tuner, const Arguments<T> &args,
+                           std::vector<T> &x_vec, std::vector<T> &y_vec,
+                           std::vector<T> &, std::vector<T> &, std::vector<T> &,
+                           std::vector<T> &) {
+    auto alpha_buffer = std::vector<T>{args.alpha};
+    tuner.AddArgumentScalar(static_cast<int>(args.n));
+    tuner.AddArgumentInput(alpha_buffer);
+    tuner.AddArgumentInput(x_vec);
+    tuner.AddArgumentOutput(y_vec);
+  }
+
+  // Describes how to compute the performance metrics
+  static size_t GetMetric(const Arguments<T> &args) {
+    return 3 * args.n * GetBytes(args.precision);
+  }
+  static std::string PerformanceUnit() { return "GB/s"; }
+};
+
+// =================================================================================================
+} // namespace clblast
+
+// Shortcuts to the clblast namespace
+using float2 = clblast::float2;
+using double2 = clblast::double2;
+
+// Main function (not within the clblast namespace)
+int main(int argc, char *argv[]) {
+  switch(clblast::GetPrecision(argc, argv)) {
+    case clblast::Precision::kHalf: clblast::Tuner<clblast::TuneXaxpy<half>, half>(argc, argv); break;
+    case clblast::Precision::kSingle: clblast::Tuner<clblast::TuneXaxpy<float>, float>(argc, argv); break;
+    case clblast::Precision::kDouble: clblast::Tuner<clblast::TuneXaxpy<double>, double>(argc, argv); break;
+    case clblast::Precision::kComplexSingle: clblast::Tuner<clblast::TuneXaxpy<float2>, float2>(argc, argv); break;
+    case clblast::Precision::kComplexDouble: clblast::Tuner<clblast::TuneXaxpy<double2>, double2>(argc, argv); break;
+  }
+  return 0;
+}
+
+// =================================================================================================